SOMEONE PLEASE HELP ME

Based on the elevation of the scientist after descending and traveling directly up, the number of feet she needs to ascend to get to sea level will be; 82.7 feet.

To find the number of feet that the scientist needs to travel up to get back to sea level, you need to find her current elevation.

The current elevation of the scientist is:

= 0 - 21.1 + 19.1 + 80.7

=  82.7 feet

In other words, the scientist is 82.7 feet below sea level.

To get back to sea level therefore, the scientist will need to travel 82.7 feet directly up.

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Answer:x=-2,5, -[tex]i\sqrt{2}[/tex], +[tex]i\sqrt{2}[/tex]

Step-by-step explanation:

The range of the sine function is:

R: {x ∈ R| -1 ≤ x ≤1}

It can also be written as [-1, 1], so that is the correct option.

For a function y = f(x) we define the range as the set of the outputs, this is, the set of the possible values of y.

In this case, our function is y = sin(θ)

Remember that the maximum value of the sine is sin(π/2) = 1

And the minimum is sin(3π/2) = -1

So the maximum value of y is 1 and the minimum is -1, thus, the range is the set of all real numbers between these two, then we can write the range as:

R: {x ∈ R| -1 ≤ x ≤1}

It can also be written as [-1, 1]

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Y=mx+b is standard form.

y-2= -x-7

  +2      +2

y= -x-5

Answer:

$30.30

Step-by-step explanation:

$26.35*15%=$3.95

Then you add $26.35 and $3.95 to get $30.30

Answer:

C

Step-by-step explanation:

Because it says -8 x 7, the * is negative and the 7 is positive.

Answer:

equal to area of rectangle

Step-by-step explanation:

Please mark me brainlest

Answer: To determine Alejandro's earnings for the first 4 weeks, we first need to calculate his weekly pay. To do this, we divide his annual salary by the number of weeks in a year:

Annual salary / 52 weeks/year = weekly pay

$71,500 / 52 weeks/year = $1,375/week

Next, we need to determine the agency fee that Alejandro will pay each week. The agency fee is equal to 40% of the first 5 weeks' pay, so we multiply Alejandro's weekly pay by 40% to get the agency fee:

Weekly pay * 40% = agency fee

$1,375/week * 40% = $550/week

Finally, to determine Alejandro's earnings for the first 4 weeks, we multiply his weekly earnings by the number of weeks:

Weekly pay * number of weeks = earnings

$1,375/week * 4 weeks = $5,500

So, Alejandro will earn $5,500 during the first 4 weeks of his new job, after paying the agency fee each week.

In the following proportions:-

A. [tex]\frac{2}{8} =\frac{3}{12}[/tex]

C. [tex]\\\\\ \frac{25}{10} =\frac{5}{2}[/tex]

D. [tex]\\\\ \frac{3}{4} =\frac{15}{20}[/tex] Are Equal

What are proportion?

A part, share, or quantity that is compared to a total is referred to as a proportion. According to the concept of proportion, two ratios are in proportion when they are equal. Two ratios or fractions are equal when an equation or a declaration to that effect is utilised.

A mathematical comparison of two numbers is called a proportion. According to proportion, two sets of provided numbers are said to be directly proportional to one another if they increase or decrease in the same ratio. "::" or "=" are symbols used to indicate proportions.

When two ratios are equal, they are said to be in proportion.For instance, the time it takes a train to go 50 kilometers per hour is equal to the time it needs to travel 250 kilometres in 5 hours. e.g., 250km/5 hours at 50 km/h.

[tex]A) \\\\\frac{2}{8} =\frac{3}{12} =\frac{1}{4}\\\\(B) \\\\\frac{3}{4} \ !=\frac{8}{10}= \frac{4}{5}\\\\\ (C)\\\\\frac{25}{10} =\frac{5}{2}\\\\(D)\\\\ \frac{3}{4} =\frac{15}{20}[/tex]

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The dimensions of each of the rectangular pens are given as follows:

8.41m and 41.58 m.

The pen have rectangular format, as shown by the image given at the end of the answer, hence the dimensions are obtained from the area and the perimeter of the pen.

For each pen, the dimensions are given as follows:

For the entire pen, the dimensions are given as follows:

You have 200 meters of fencing to enclose two adjacent rectangular pens for livestock, hence the perimeter is given as follows:

2(2x + y) = 200

2x + y = 100.

The total area of the enclosed region is 1400 square meters, hence:

2xy = 1400.

From the first equation, we have that:

y = 100 - 2x.

Replacing in the second, the length x is obtained as follows:

2x(100 - 2x) = 1400

-4x² + 200x - 1400 = 0

4x² - 200x + 1400 = 0.

The solutions are of:

8.41m and 41.58 m.

Which gives the dimensions of the pen.

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Answer:

Step-by-step explanation:

Let

n--------> the number

we know that

1) the sentence" Three less than the product of seven and a number"  represent the expression------>  

2) the sentence" is four more than the number"  

represent the expression ------->  

3) the complete sentence" Three less than the product of seven and a number is four more than the number"  represent the expression

represent the expression ------->  

therefore

the answer is

(7n-3) =(n+4)

The bags of chips sold are 111.

The percentage is the term use to tell the hundredth part of something.

Given that, The snack bar sold 75% of its inventory of bags of chips, and the snack bar still has 37 bags of chips,

Let the original number of bags of the chips be x,

Since, 75% is already sold, so left number of bags are = 100%-75% = 25%

Therefore,

25% of x = 37

x = 37x4

x = 148

The number of bags sold = 75% of 148

= 75x148/100

= 111

Hence, they sold 111 bags of chips.

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The relation is:

(1, 2), (-3, 5), (6, 6), (-2, 0), (1, 2)

Is a function, because each element in the domain is mapped to a single element in the range.

A relation maps elements from one set, called the domain, into another set, called the range.

For example, the element x mapped into element y is written as (x, y).

Particularly, a relation is a function if each element from the domain is mapped into only one element of the range.

So, if we had two points like (2, 4) and (2, 5), then the relation is not a function (because the element 2 is mapped into two different elements of the range).

Here the relation is:

(1, 2), (-3, 5), (6, 6), (-2, 0), (1, 2)

So the input x = 1 appears twice, but both times is mapped to the same element, so this relation is a function.

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The equation that can be used to find the length of the side of the original square is 4(x+5) = 60. Option A. is the answer

Given that:

When the length of a side of a square is increased by 5, the perimeter of the new square is 60.

Let x represent the length of the side of the original square

when x is increased by 5, you have (x+5)

Perimeter (P) = 4 × length of the side

Thus, 4(x+5) = 60

Therefore,  the equation to find the length of the side is  4(x+5) = 60

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In 11.56 years the given amount of $ 900 will be double.

The interest charged on a loan or deposit is known as compound interest which depends on both the principal amount and rate of interest.

The formula  used for

where P = Principal amount

r = Rate of interest in decimal

n = Number of compounds per year  

t = Time period  

Here from the given data,

Principal amount, p = $ 900

Rate of interest, r = 6% = 6/100 = 0.06

Number of compounds, n = 12    [ ∵ compounded mothly ]

Here we need to find the time period

Assume that after 'n' years the amount will be doubled i.e $ 1800

From the given problem,

Amount, A = 900(1+0.06/12)¹²ⁿ        

= 900(1+0.06/12)¹²ⁿ

= 900(1 + 0.005)¹²ⁿ

= 900 (1.005)¹²ⁿ  

As we assumed after 'n' years the amount is $ 1800

=> 900 (1.005)¹²ⁿ = 1800  

=> (1.005)¹²ⁿ = 2    

Apply to log on both sides

=> log (1.005)¹²ⁿ = log 2

=> 12n log(1.005) = log 2

=> 12n = log 2/log(1.005)

[ use calculator for log (1.005) and log 2]

=> 12n = 0.301029996/ 0.00216606176  

=> 12n = 138.975722

=>  n =  11.5813102

=>   n = 11.56  

Therefore,

In 11.56 years the given amount of $ 900 will be double.

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Answer:

Step-by-step explanation: 270

The position of the √7 on the number line is slightly right of the 2.6.

What is a number line?

A number line is defined as the number marked on the line calibrated into an equal number of units. For example -1, 0, 1, and so on.

Here,

In general conclusion,

√4< √7 < √9

2 < √7 < 3

So, the value of the √6 lies between 2 and 3.

√6 = 2.6457

Hence, the position of the √7 on the number line is slightly right of the 2.6.

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Angle θ with 0∘ < θ < 360∘ that has the same: sine as 30°:∅= degrees

cosine as 30°:∅= degrees are 150 and 330 degrees.

What is trigonometric function?

Trigonometric functions are referred to as Circular Functions may be merely outlined because the functions of an angle of a triangle

Main Body:

We have to find an angle θ with 0° < θ < 360° that has the same:

(a) sin(30∘)

We know that sin(θ) is positive in 2nd quadrant and in the 2nd quadrant θ lies between 90∘ and 180∘.

sin(30∘)=sin(180∘−30∘)

[∵sin(180∘−θ)=sin(θ)]=sin(150∘)

Thus:

sin as 30∘:θ=150 degrees

(b) cos(30∘)

We know that cos(θ) is positive in the 4th quadrant and in the 4th quadrant θ lies between 270∘ and 360∘.

cos(30∘)=cos(360∘−30∘)

[∵cos(360∘−θ)=cos(θ)]=cos(330∘)

Thus:cos as 30∘

:θ=330 degrees

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Let n be a positive integer. Consider the  n+1 integers 1,11, 111,1111,... (where the last integer in this list is the integer with n+1 - 1s in its decimal expansion).

Note that there are n possible remainders when an integer is divided by n. Because there are n+1 integers in this list, by the pigeonhole principle there must be two with the same remainder when divided by n. The larger of these integers the smaller one is a multiple of n, which has a decimal expansion consisting entirely of 0s and 1s.

For example, take n=7

we have, 1,11, 111,1111,...,11111111

The remainder possible when any number is divided by 7 is 0,1,2,3,4,5,6

These are the remainders when the numbers in the first list are divided by 7 gives 1,4,6,5,2,0,1,4.

Now you can see that we have 7 pigeonholes {0,1,2,3,4,5,6} and 8 pigeons {1,11, 111,1111,...,11111111} so there needs to be at least one pigeonhole where 2 pigeons will reside.

In this case, we have 11%7=4 and 11111111%7=4

Their difference, i.e. 11111111-11=11111100 is divisible by 7.

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Ling can therefore purchase 0 to 12 bags, but no more is the right decision.

Ling has been instructed to spend no more than $40.00 on party décor. She has already spent $10.00 on streamers but also plans to purchase bags of balloons. The price of a bag of balloons is $2.50.

Given her spending cap and how much she has already spent on streamers, the inequality  10 + 2.5x ≤ 40 indicates x, the number of bags she can purchase.

Subtracting 10 from both sides of our inequality, let's find x by reversing the inequality.

10 - 10 + 2.5 x ≤ 40 - 10

2.5 x ≤ 30.

We will now divide our inequality by 2.5 on both sides.

2.5 x / 2.5 ≤ 30 / 2.5

x ≤ 12.

Ling can therefore purchase 0 to 12 bags, but no more is the right decision.

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Answer:

Step-by-step explanation:

Ling can therefore purchase 0 to 12 bags, but no more is the right decision.

The dimensions of the piece are l = 8 and b =4.

What are dimensions?

The minimal set of coordinates required to specify any point within a mathematical space is the dimension of that space. Because only one coordinate is required to specify a point on a line, it has a dimension of one.

Here,

Let the length of a rectangular piece of metal = l cm

And the breadth of a rectangular piece of metal = b cm

Perimeter of a rectangular piece of metal = 2(l+b) = 24 cm

Or, l+b = 24/2

Or, l+b = 12 -------- (1)

Area of a rectangular piece of metal = l×b = 32 cm²

Or, l×b = 32 ------- (2)

We know that,

(l - b)² = (l+b)² - 4×l×b

(l - b)² = (12)² - 4×32

(l - b)² = 144 - 128

(l - b)² = 16

(l - b)² = 4

l - b = 4 --------- (3)

Adding equations (1) and (3), we get

l+b+l-b = 12 + 4

2l = 16

l = 8

Now, we put the value of l in equation(1) and we get

8 + b = 12

b =4

Hence, the dimensions of the piece are l = 8 and b =4.

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Answer:

X=100

Step-by-step explanation:

I assume you want to find the value of x.

3/5x=60

5/3*60=x

x=20*5=100

Answer:

y = 3x + 2

y = 1/2 x -1

Step-by-step explanation:

The slope intercept form of a line is

y = mx + b  You substitute in the slope for m and the y intercept for b

Answer:

---------------------------------

Given  number is 71830.

The last part:  830 is same on both lines.

We need to represent 71000 in different way, instead of 7 ten thousands and 1 thousands we have 6 ten thousands then we need:

It is 11 thousands.

Answer:

11,000 (or) 11 thousands

Step-by-step explanation:

Now we have to,

→ find the missing number.

→ Let the number be x.

Forming the equation,

→ 60,000 + x + 800 + 30 = 71,830

Then the value of x will be,

→ 60,000 + x + 800 + 30 = 71,830

→ x + 60,830 = 71,830

→ x = 71,830 - 60,830

→ [ x = 11,000 ]

Hence, the value of x is 11,000.

Answer:

  see attached

Step-by-step explanation:

Given the equation for a line, y +3 = (x -6), you want to identify the slope and a point on the line, then graph it.

The point-slope form of the equation for a line is ...

  y -k = m(x -h) . . . . . . . . line with slope m through point (h, k)

Comparing this to the given equation, you can see ...

This tells you the slope is 1 and a point on the line is (6, -3).

You graph this equation by plotting point (6, -3) and drawing a line through it that goes up 1 unit for each 1 unit to the right. A graph is attached.

__

Additional comment

If you like, you can rearrange the equation to slope-intercept form by subtracting 3:

  y +3 -3 = (x -6) -3

  y = x -9

This tells you another point is -9 on the y-axis.

Between (5,10) and (15,70), a line runs. As a result, the slope of the line through the supplied locations is 3.

A line's steepness and direction are measured by the line's slope.

Without actually using a compass, determining the slope of lines in a coordinate plane can assist in forecasting whether the lines are parallel, perpendicular, or none at all.

Any two different points on a line can be used to calculate the slope of any line.

A line's slope is determine by how its y coordinate changes in relation to how its x coordinate changes. y and x are the net changes in the y and x coordinates, respectively.

Two locations located on a straight line can be used to determine a line's slope. We can use the slope of line formula if we know the two spots' coordinates. These two points' coordinates should be-

P1 = (x1, y1) and P2 = (x2, y2)

Hence, Between (5,10) and (15,70), a line runs. As a result, the slope of the line through the supplied locations is 3.

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Answer: y = 14/19x+15

Step-by-step explanation: using the equation y = mx+b, m is your slope and b is the y-intercept. plug your slope (14/19) and y-intercept (15) into the equation and you’ve got your answer in slope-intercept form

According to the Dietary Guidelines for American 2015, you should limit your fat intake to 25% - 35% of your total calories. The correct option is B.

Food-based dietary guidelines also known as dietary guidelines are intended to serve as a foundation for public food and nutrition policies, health and agricultural policies, and nutrition education programs aimed at promoting healthy eating habits and lifestyles.

Calories are the units of energy released by your body when it digests and absorbs food. The higher the calorie content of a food, the more energy it can provide to your body. When you consume more calories than you require, your body stores the excess calories as fat. Even fat-free foods can be high in calories. In this case, the fay should not be more than 35%.

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we want to find the number of hours (or rather days) until only 4.25% of the drives fail.

that means for an exponential distribution we have

P(X < x) = 1 - e^(-Lx)

L = 1/mean = 1/12500

and we need to find x, so that P(X <x) = 0.0425 (that is 4.25% converted into a probability).

so, we get

0.0425 = 1 - e^(-x/12500)

0.0425 - 1 = -e^(-x/12500)

-0.9575 = -e^(-x/12500)

0.9575 = e^(‐x/12500)

ln(0.9575) = -x/12500

-x = ln(0.9575)×12500

x = -ln(0.9575)×12500 = - -0.043429558...×12500 =

= 0.043429558...×12500 = 542.8694741... hours

after 542.8694741... hours = 22.61956142... days

it is expected that 4.25% of the hard drives fail.

you left out to what decimal this should be rounded. and if you need hours or days. in case of doubt use hours (as the only other time information is given in hours).

please round yourself as you need.