Mathematics High School

help with practice problem

Answers

Answer 1

Answer:

-5<x<-3

Step-by-step explanation:

Hope this helps! ;-)

Related Questions

how do you measure the perimeter of a shape

Answers

Perimeter is a measure of the area or distance around a two-dimensional shape. On a rectangle, for instance, the perimeter is the total length of the rectangle's outline, including the two widthwise borders and the two lengthwise borders.

To determine the perimeter of a shape, therefore, you add together all the dimensions that make up the shape's outer edge. Being able to find the perimeter of a shape has many applications in the real world. Say, for example, that you wanted to build a fence around your backyard. In order to purchase materials, you need to know how much fencing you'll need, and to determine that you have to figure out the perimeter of the area you want to fence in.

What is the first incorrect step?
A Angelina did not make a mistake. Her work is correct
B Angelina first made a mistake in Step 3. The formula she should have used is an = 0n-1 + d.
Angelina first made a mistake in Step 4. When she distributed the - 7 to the -1, she should have gotten +7
D Angelina first made a mistake in Step 6. In order to find the 41st term, she should have plugged 40 into her equation.

Answers

I think it’s A because it’s says angeline did not make a mistake while the other point are describing or guessing the mistake she made

Find the value of y when x=-2
y=5x+6
y=

Answers

y=5(-2)+6
y=-10+6
y=-4

Answer:

Soln;

From the given question, We know that:

x= -2

So,

y= 5x+6

= 5*(-2)+6

= -4 Ans

Therefore, The value of y is -4.

what is 1 2/3 - 2 1/3

Answers

Answer:

-2/3

Step-by-step explanation:

[tex]= 1 \frac{2}{3} - 2 \frac{1}{3}\\=\frac{1 * 3 + 2}{3} - \frac{2 * 3 + 1}{3} \\= \frac{5}{3} - \frac{7}{3}\\ = \frac{5 - 7}{3} \\\\= \frac{-2}{3}[/tex]

What is the distance in units between the points (6,-3) and (6,1)

Answers

Step-by-step explanation:

that is in this case totally simple :

both points have the same x value.

that means they are both on the same vertical line at x = 6.

so, we only need to calculate the y difference, and that is then their distance :

1 - -3 = 1 + 3 = 4

the distance is 4 units.

There are two squares. the perimeter of square x is half the perimeter of square y.
how do the areas of the two squares compare?
o a. the area of square x is one-sixteenth the area of square y.
o b. the area of square x is one-eighth the area of square y.
oc. the area of square x is one-fourth the area of square y.
d. the area of square x is one-half the area of square y.

Answers

The area of square x will be one-fourth of the area of square y. Then the correct option is C.

What is a square?

It is a polygon with four sides. The total interior angle is 360 degrees. A square's opposite sides are parallel and all sides are equal, and each angle is 90 degrees. Its diagonals are all the same length and intersect in the center.

There are two squares.

The perimeter of square x is half the perimeter of square y.

Let the side of the square x be a and the side length of the square y be b. Then we have

Perimeter x = Perimeter y / 2

4a = 2b

2a = b

Then the area of the square x will be

Area of square x = (2a)²

Area of square x = 4a²

Then the area of the square y will be

Area of square x = (b)²

Area of square x = b²

Then the area of square x will be one-fourth of the area of square y.

Thus, the correct option is C.

More about the square link is given below.

https://brainly.com/question/13747846

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Graph the line 2x – 3y = 12.

Answers

Decided by 12 is 2 your welcome

Answer:

-6, -4

Step-by-step explanation:

I got it right

Write the quadratic equation whose roots are -6 and 5, and whose leading coefficient is 3.
(Use the letter x to represent the variable.)
= 0

Answers

Answer:

The equation is 3x²-6x+5

hey there!

Given roots are-6,5

Sum of roots = -6+5 = -1

Product of roots = -6 x 5 = -30

Now the quadratic expression is

[tex]3x^{2}+x-30=0[/tex]

Hope this helps you dear;)
Have a good day :3

Find a number “a so that the numbers 42, 46, a, a, a have a mean and mode both equal.

Answers

Answer:

Step-by-step explanation:

The mode will be a as it is the most in frequency.

Calculating 'a' by taking the mean

42 + 46 + a + a + a / 5 = a88 + 3a = 5a2a = 88a = 44

What is the percentage of 20 from 400?

Answers

(20/400)×100

hope it helps...!!!

Answer:5%

Step-by-step explanation:

40 is 10% so then you half that which is 20=5%

Evaluate the given expression for x = 3 and y = 2.

Answers

Answer:

Step-by-step explanation:

3(2) - (3(3) + 2) + 16

6 - (9 + 2) + 16

6 - 11 + 16

good luck, hope this helps :)

5) Amber picked fruits from her family's fruit trees and put them into baskets. She put 10 apples into each of 4 baskets, 10 oranges into each of 3 baskets, and 12 peaches into each of 5 baskets. How much fruit did she pick in all?

Answers

Total apples.

10(4)40

Total oranges

10(3)30

Total peaches

12(5)60

Total fruits

60+40+30130

Answer:

130

Step-by-step explanation:

We have given in the question 'she put 10 apples into each of 4 baskets.

Into = Multiply

we have to Multiply 10 with 4

=> 10 × 4

=> 40 Apples

Similarly, in the case of oranges we have to Multiply 10 with 3

=> 10 × 3

=> 30 Oranges

Same method will be followed to find the number of peaches that she picked .

=> 12 × 5

=> 60 Peaches

Total fruits Amber picked = Number of apples + Number of oranges + Number of peaches

=> Total fruits = 40 + 30 + 60

=> Total Fruits = 130 .

three times a number increased by 2 is greater than zero or less than or equal to negative three

Answers

Step-by-step explanation:

Let the number be X

3×X=3X

Increased by 2

3X+2>0≤-3

Does Anybody know this? Find the area of the shaded sector

Answers

Step-by-step explanation:

your teacher was very nice and warned you about the trap in the question.

so, really, what do we have to do ?

a full circle represents 360°.

the shaded sector is the full circle minus the white sector !

this is the same as directly calculating the shaded sector for 360-75 = 285°.

so, the area of a circle is

pi×r²

in our case

pi×20² = 400pi

the needed fraction of the whole circle is either

75/360, if we want to subtract it for the solution

285/360, if we want to calculate the solution directly.

both lead to the same result.

400pi×360/360 - 400pi×75/360 =

= 400pi × 285/360 = 10pi × 285/9 = 2850pi/9 =

= 316.6666666...pi ≈ 316.7pi

Which has least value when x=100?

Answers

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

[tex]\diamond\large\blue\textsf{\textbf{\underline{\underline{Question:-}}}}\diamond[/tex]

Which expression has least value when x=100?

[tex]\diamond\large\blue\textsf{\textbf{\underline{\underline{Answer and How to Solve:-}}}}\diamond[/tex]

Substitute 100 for x and solve:-

[tex]\bold{\dfrac{1}{100}}[/tex]

[tex]\bold{\dfrac{10}{100}}[/tex]

[tex]\bold{1-100=-99}[/tex]

[tex]\bold{10-100=-90}[/tex]

Since -99 is the smallest number here, the expression with the least value when x=100 is Option C - [tex]\checkmark\dashrightarrow\boxed{\boxed{1-x}}}\dashleftarrow\checkmark[/tex]

Good luck.

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

1. Find the synonym in this sentence that hints at the meaning of the underlined word:
Nelly was astounded-the party was a complete surprise.
surprise
party
complete
Nelly

Answers

Answer:

Step-by-step explanation:
Surprise! It is the closest to the noun " astounded "

Answer:

surprise

Step-by-step explanation:

I will multiply twenty negative numbers together, with fifteen positive numbers. If the value of my number is x, how does it compare to zero? Fill in the blank using >, <, or, = to make the statement true.
x enter your response here

Answers

Answer:

x = 27

Step-by-step explanation:

Finding variation constant :

k = y/xk = 18/9k = 2

Substituting in the equation y = kx, where y = 54 :

54 = 2xx = 54/2x = 27

How many solutions are in 18+6x=20+6x

Answers

Answer:

the equation has no solution

Step-by-step explanation:

How many solutions are in 18+6x=20+6x

18+6x=20+6x

take away 6x from both side

18 = 20

the equation has no solution, 18 is not 20.

1/5 is 40% of what number

Answers

Answer:

Step-by-step explanation:

To get a fraction of a number, we will simply multiply this fraction by the number.

Please help, Write the sum.

Answers

[tex]12\sqrt{23 x^{13}}+14\sqrt{23 x^{13}}\\\\=(12+14)\left(\sqrt{23 x^{13}}\right)\\\\=26\left(\sqrt{23 x^{13} }\right)\\\\=26\sqrt{23} \sqrt{x^{13}}\\\\=26\cdot 23^{\tfrac 12} \cdot x^{\tfrac {13}2}[/tex]

Given the quantity of 3 x squared plus x minus 4, all over x minus 1, what are the domain and range? domain is x is all real numbers where x does not equal negative 1 comma range is y is all real numbers where y does not equal 1 domain is x is all real numbers where x does not equal 1 comma range is y is all real numbers where y does not equal negative 1 domain is x is all real numbers where x does not equal negative 1 comma range is y is all real numbers where y does not equal negative 7 domain is x is all real numbers where x does not equal 1 comma range is y is all real numbers where y does not equal 7

Answers

The domain of the expression is a real number except 1 and the range of the expression is also a real number.

What are domain and range?

The domain means all the possible values of x and the range means all the possible values of y.

The expression is given below.

(3x² + x - 4) / (x - 1)

The expression can be written as

(3x² + 4x - 3x - 4) / (x - 1)

[(3x + 4)(x - 1)] / (x - 1)

3x + 4

The domain of the expression is a real number except 1 and the range of the expression is also a real number.

More about the domain and range link is given below.

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Each edge of this cube is 6.7 cm long.
Work out
a) volume
b) surface area

Answers

Answer:

Hii.. The answer of the volume is 300.74 cm

And the surface area is 269.34 cm

Answer:

V=6.7×6.7×6.7

=300.763 cm^3

SA=6×6.7×6.7

=269.34 cm^2

please help i font understand

Answers

Prime numbers between 1 and 5 = 2,3,5
To get the probability we get the amount of numbers that are prime and put them over the total number of sides of the spinner which equals: 3/5

Answer:

3/5

Step-by-step explanation:

Concepts + Application + Solution

We can write the probability of this event happening like this:

(number of prime numbers)/(total number of sections)

For recap, a prime number is a number that's greater than 1 whose only factors are 1 and itself. Take the number 7 for example; its factors are only 7 and 1.

Given this information above, let's find the prime numbers in the spinner.

1: not prime (not greater than 1)2: prime3: prime4: not prime (divisible by 2)5: prime

As you can see, we have 3/5 numbers that are prime, making the probability of landing on a prime number 3/5.

Eddie worked 50 hours this week. He gets paid $12.00 per hour for the first 40 hours and
then gets double-time (2) for the rest of the time. How much money did he make this
week?

Answers

Answer:

720

Step-by-step explanation:

720 40 x 12 +24x10 yeah good luck on that

Type the correct answer in each box. use numerals instead of words. consider the quadratic equation x2 10x 27 = 0. completing the square leads to the equivalent equation (x )2 = .

Answers

The equivalent equation using the completing the square method is (x+5)² = -2

Completing the square method.

Quadratic equations are equation that has a degree of 2. Given the equations expressed as:

x^2+10x+27 = 0

Subtract 27 from both sides

x^2+10x = -27

Complete the squares

x^2+10x = -27
x^2+10x + 5^2= -27 + 25
(x+5)² = -2

Hence the equivalent equation using the completing the square method is (x+5)² = -2

Learn more on completing the square here: https://brainly.com/question/13981588

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What is the surface area of a cube with a side length of 3 inches?

Answers

Step-by-step explanation:

Find the area of on side of the cube...it's a cube so all sides are the same

3x3=9

multiply the area of one face by the number of faces, 9x6=54

I need the answer because i been trying to figure this out for 20 minutes

Answers

Answer:

sqrt (65) = 8.062 units = x

Step-by-step explanation:

use Pythagorean theorem for a right triangle

a ^2 + b^2 = c^2 where a and b are the legs and c is the hypotenuse

4^2 + x^2 = 9^2

x^2 = 9^2 - 4^2

x^2 = 65

x = sqrt 65

Answer:

Step-by-step explanation:

39-50 find the limit.
41. [tex]\lim _{t \rightarrow 0} \frac{\tan 6 t}{\sin 2 t}[/tex]

Answers

Write tan in terms of sin and cos.

[tex]\displaystyle \lim_{t\to0}\frac{\tan(6t)}{\sin(2t)} = \lim_{t\to0}\frac{\sin(6t)}{\sin(2t)\cos(6t)}[/tex]

Recall that

[tex]\displaystyle \lim_{x\to0}\frac{\sin(x)}x = 1[/tex]

Rewrite and expand the given limand as the product

[tex]\displaystyle \lim_{t\to0}\frac{\sin(6t)}{\sin(2t)\cos(6t)} = \lim_{t\to0} \frac{\sin(6t)}{6t} \times \frac{2t}{\sin(2t)} \times \frac{6t}{2t\cos(6t)} \\\\ = \left(\lim_{t\to0} \frac{\sin(6t)}{6t}\right) \times \left(\lim_{t\to0}\frac{2t}{\sin(2t)}\right) \times \left(\lim_{t\to0}\frac{3}{\cos(6t)}\right)[/tex]

Then using the known limit above, it follows that

[tex]\displaystyle \left(\lim_{t\to0} \frac{\sin(6t)}{6t}\right) \times \left(\lim_{t\to0}\frac{2t}{\sin(2t)}\right) \times \left(\lim_{t\to0}\frac{3}{\cos(6t)}\right) = 1 \times 1 \times \frac3{\cos(0)} = \boxed{3}[/tex]

A volleyball has a surface area of 1 465cm^2 Calculate the volume of five volleyballs. Round your answer to the nearest THOUSAND.

Answers

The volume of five volleyballs is 26310.15 cubic cm if the volleyball has a surface area of 1465 square cm.

What is a sphere?

It is defined as three-dimensional geometry when half-circle two-dimensional geometry is revolved around the diameter of the sphere that will form.

We know the surface area of the sphere is given by:

SA = 4πr²

1465 = 4πr²

r = 10.79 cm

Volume of the sphere = 4πr³/3

V = 4π(10.79)³/3

V = 5262.03 cubic cm

Volume of five volleyballs = 5×5262.03 = 26310.15 cubic cm

Thus, the volume of five volleyballs is 26310.15 cubic cm if the volleyball has a surface area of 1465 square cm.

Learn more about the sphere here:

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The car that Ms. Garcia is buying comes with a choice of 3 trim lines (standard, sport, or luxury), 2 types of transmission (automatic or manual), and 8 colors. How many different option packages does Ms. Garcia have to choose from? Explain.

Answers

Answer:

Number of different options for Ms. Garcia are

3 * 2 * 8 = 48

So 48 options

Step-by-step explanation:

There are m ways to make 1st selection and n ways to make 2nd selection and p ways to make 3rd selection so thats why I did (m * n * p)

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