Write the slope-intercept form of a line with a slope of 12 and a y-intercept of (0, -7)

Answer:

Y= x+1

Step-by-step explanation:

m=2-1/ 1-0; m=1

Y-2= 1(x-1)

Y= x-1+2

Y= x+1

Answer:

Step-by-step explanation:

A = 75000(1 + (0.06 × 10)) = 120000

A = $120,000.00

B = 24000(1 + (0.07 × 0.75)) = 25260

B = $25,260.00

B=9 months

Answer: 2x3-1

Step-by-step explanation:

By evaluating the function in x = 1 we get:

C(1) =  95.16

This means that the per capita consumption of all poultry in 2015 was 95.16 pounds.

Here we have the linear function:

C(x) = 2.97*x+ 92.19

We know that it models the consumption of all poultry in a country as a function of x, the number of years since 2014.

Then C(1) will be the consumption of all poultry in that country one year after 2014 (this would be on 2015).

To evaluate we just need to replace the variable x in the equation by 1, we will get:

C(1) = 2.97*1+ 92.19 = 95.16

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Answer:

First, know that this is a downwards parabola graph.

Probability that the arrow will stop on the same letter twice = 1/3 (c).

What is probability?

The area of arithmetic called likelihood deals with numerical representations of the chance that a happening can occur or that an announcement is true.

Main body:

Given : Maria will spin the arrow on the spinner 2 times.

To find : What is the probability that the arrow will stop on the same letter twice.

Solution : We have given a spinner that spin twice and stop on the same letter.

Formula for probability = no. of favourable outcome/ total outcomes

Here, total part of spinner = 3 and it spin two times

So, total possible outcome = 6.  Arrow stay on same letter twice( favorable outcome) =2.

Plugging the values in formula :

Probability =  2/6

Probability =  1/3

Therefore,  probability that the arrow will stop on the same letter twice =  (c).

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Answer: $931

Step-by-step explanation:

Since $980 is 100% of the price and the cash discount is 5% we can calculate the cash price of the portrait like this:

$980 full price* (1 - .05 discount) = $931

Using simple mathematical operations, we know that the lift will carry 1,120 more children than adults in a day.

A mathematical function known as an operation converts zero or more input values into a precisely defined output value.

The quantity of operands affects the operation's arity.

parentheses, exponents, multiplication, division, and PEMDAS.

So, to calculate how many more children the lift carries in a day:

The number of adults the lift can carry is 24.

The number of children the lift can carry is 40.

The lift carries people at full capacity 70 times.

Now, calculate as follows:

24 × 70 = 1,680

40 × 70 = 2,800

Difference:

2,800 - 1,680 = 1,120

Therefore, using simple mathematical operations, we know that the lift will carry 1,120 more children than adults in a day.

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Answer:

0.9*0.8=0.72

Step-by-step explanation:

there are 9 squares across the top and 8 square downward so the only equation similar to this is the first equation.

Answer: 0.9 x 0.8 = 0.72

Step-by-step explanation:

dark gray is 9 x 8, divide both numbers by 10, you get 0.9 x 0.8 = 0.72

she would have four seeds left because 6 seeds times six pots would equal 36 seeds so subtract 36 from forty to get four

Step-by-step explanation:

Answer:4

Step-by-step explanation:6x6=36+4=40

The expected population of a city in 4 years is 581,000.

Current population (P) = 528 000.

Rate of growth (r) = 2.4%

Time t = 4 years

Expected population (A) = ?

The formula used is-

A = P(1 + r/100)∧t

Put the values.

A = 528 000(1 + 2.4/100)∧4

A = 528 000 x (1.042)∧4

A = 581,000

Thus, the expected population  of a city in 4 years is 581,000.

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The total amount that Chau spent on video game and DVD rentals in the past month is $31.70.

Given that Chau rented 5 video games and 4 DVDs and the rental price for each video game was $3.30 while the rental price for each DVD was $3.80.

The Total amount that was spent will be:

= Amount spent on video games + Amount on DVD

= (5 × $3.30) + (4 × $3.80)

= $16.50 + $15.20

= $31.70

The amount is $31.70.

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The width of the enlarged photo is 12 inches

The length of the original photo = 10 inches

The width of the original photo = 8 inches

The length of the enlarged photo = 15 inches

The width of the enlarged photo = x

Then the proportion of the length and width of the original and enlarged photo will be

10 / 8 = 15 / x

Cross multiply the terms

10x = 15 × 8

Multiply the terms in the equation
10x = 120

Divide both side of the equation by 10

10x / 10 = 120 / 10

x = 120 / 10

Divide the terms

x = 12 inches

Hence, the width of the enlarged photo is 12 inches

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Answer:

2:45

Step-by-step explanation:

1 hour has 60 minutes so:

number of hours in 1000minutes:

1000/60=16.6666hours

so 16 hours + 0.6666 hours

convert 0.6666 hours to minutes;

0.6666x60=39.99minutes=40 minutes(rounded)

10:05+16hours+40 minutes

2:05+40minutes=2:45

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The cost per ticket is $9, the cost of 5 ice cream cones is $14.58 and the cost of 12 bananas is $4.8.

a.

4 movie tickets cost $36.

cost per ticket = 36/4

= $9,

The cost per ticket is $9.

b.

3 ice cream cones cost $8.75.

1 ice cream cost = 8.75/3

= 2.916

5 ice cream cost = 2.916*5

= $14.58.

The cost of 5 ice cream cones is $14.58.

c.

5 bananas cost $2.00.

1 banana cost = 2/5

= 0.4

12 bananas cost = 0.4*12

= $4.8.

The cost of 12 bananas is $4.8.

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The angle W equal to 24.3

In a triangle sum of three angles is equal to 180

W = (3x-24) degree

C = (4x-11) degree

T = 2x degree

3x-24+4x-11+2x=180

9x-35=180

9x=180-35

9x= 145

x=16.1

substitute the value of x in W equation

W = 3(16.1)-24 = 24.3

The value of angle W is 24.3

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Answer:

12 - D = X

Step-by-step explanation:

Im not REALLY x2 sure but hope its helpful

The final price of the car when Mark sells a car that has been marked up $450 is $2452.50.

From the information, Mark sells a car that has been marked up $450, which was 25% of the buying price.

He also has to charge a 9% sales tax on the selling price of the car. The final price of the car will be:

= Original price + Mark up + Tax

= $1800 + $450 + (9% × $1800 + $450)

= $1800 + $450 + $202.50

= $2452.50

The price is $2452.50.

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Answer:

[tex]68 = 2 \times 2 \times 17[/tex]

The value of n/p is 8.

What is quadratic equation?

A quadratic equation in algebra is any equation that can be written in standard form as where x is an unknown and where a, b, and c denote known numbers, where a ≠ 0.

Let, for x^2 + mx + n = 0

⇒ x = 2α or 2β

From the given condition,

for x^2 + mx + n = 0 ⇒ x = α or x = β

Then,

2(α + β) = -m           ..(1)

4αβ = n                    ..(2)

and α + β = -p         ..(3)

αβ = m                     ..(4)

From equation (1) and (3),

-m/2 = -p

⇒ p = m/2

and from equation (2) and (4),

n/4 = m

⇒ n = 4m

Therefore,

n/p = 4m / (m/2) = 4 x 2 = 8

Hence, n/p = 8.

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Answer: x=30 degrees

Step-by-step explanation:

A triangle has 180 degrees, so:

90+x+20+x+10=180

90+2x+30=180

2x+30=90

2x=60

x=30

The claim of invertible metrix is true and others are false.

In the given value we have to check which is true and which is false for the eigenvalues.

The eigenvalues are 2, 2, 5.

(1) First check the matrix is certainly invertible.

The matrix is invertible when the probuct of eigenvalues does not equal to zero.

invertible of A = 2*2*5

invertible of A = 20 which is not equal to zero.

So the matrix is certainly invertible. The claim is true.

(2) Now we check the matrix is certainly diagonalizable.

We note that the eigen value 2 has an algebraic multiplicity of 2 (number of repetitions), but we are unsure if the accompanying eigen vectors likewise have a count of two (geometric multiplicity)

The sum of the algebraic multiplicities must equal the sum of the geometric multiplicities in order for A to be diagonalizable.

In this instance, there is no evidence to support the geometric multiplicity of the eigenvalue 2. Therefore, we are unable to affirm that A is diagonalizable.

Consequently, the claim is false.

(3) Now we check the matrix is certainly not diagonalizable.

If the homogeneous equation from (A-⋋I)x=0 when the eigen value ⋋=2 is substituted x+y+z=0, then the solution set is x=-k-m where y=k, z=m are the parameters.

So it can be written as

[tex]\left[\begin{array}{ccc}x\\y\\z\end{array}\right] =k\left[\begin{array}{ccc}-1\\1\\0\end{array}\right] +m\left[\begin{array}{ccc}-1\\0\\1\end{array}\right][/tex]

Putting k=1 and m=1, then the corresponding eigen vectors for ⋋=2 are [tex]\left[\begin{array}{ccc}-1\\1\\0\end{array}\right],\left[\begin{array}{ccc}-1\\0\\1\end{array}\right][/tex]

So the geometric multiplicity of the eigen value ⋋=2 is 2.

The algebraic multiplicity = Geometric multiplicity we can see the given matrix A is diagonalizable.

So the statement is false.

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Answer:

Answer number 3

y=-9x+5

The length of the Hypotenuse is, [tex]\sqrt{5}x[/tex] units.

What is Pythagoras Theorem?

The relationship between the three sides of a right-angled triangle is explained by the Pythagoras theorem, commonly known as the Pythagorean theorem. The Pythagoras theorem states that the square of a triangle's hypotenuse is equal to the sum of its other two sides' squares.

Let the one leg of a right triangle is twice as long as the other.

Suppose the shorter leg is x.

So the longer leg is 2x.

Let, the hypotenuse is h.

By Pythagoras Theorem,

[tex]x^2 + (2x)^2 = h^2\\x^2 + 4x^2 = h^2\\5x^2 = h^2\\h = \sqrt{5} x[/tex]

Hence, the hypotenuse as a function of the length of the shorter leg, is [tex]\sqrt{5}x[/tex] units.

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The value of n is calculated as -14 which was found using the slope formula and given data.

When coordinates are provided, the following formulae can be used to determine a line's slope:

Step 1: Determine the line's coordinates.

Step 2: Enter their values into the equation slope(m) = (y₂-y₁)/(x₂-x₁).

Given: There is a line that contains the points (-9, n) (-10, 5).

We need to find the value of n.

We know that,

slope(m) = (y₂-y₁)/(x₂-x₁)

           -9   = (5-n)/(-10+9)

           -9(-10+9) = 5-n

           90-81 = 5-n

           9+5 = -n

              n = -14

Therefore, the value of n is -14 which was found using the slope formula and given data.

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The cost is the cost per pound times the number of pounds minus the coupon.

If [tex]p[/tex] pounds are purchased, she will pay [tex]3.50p-3.25[/tex].

If 3 pounds are purchased, she will pay 3.50(3)-3.25=7.25.

Answer:

the cheaper plan is Mike's until month 10.  At month 10 the plans are equal after month 10 All Day is cheaper

Step-by-step explanation:

30x = 22x + 80  Set the equations equal to each other and subtract 22 from both sides of the equal sign

8x = 80  Divide both sides by 8

x = 10

At 10 months the plan are equal.

Five minutes into the descent the airplane has an altitude of 500 feet.

Given that an airplane at 3,000 feet begins to descend at a rate of

500 feet per minute, it is required to write an equation to model the situation and find the altitude of the airplane after 5 minutes.

First, we can model the situation through a linear equation of the form

y = mx + b.

Then, we must identify each variable:

y = A = Altitude

m = decrease per minute = 500

x = t = minute-time

b = Airplane height = 3,000

Now, we set up the equation, substituting y, m, x, and b into the linear equation, as the situation models the descent of the airplane the slope must be negative; thus:

A(t) = 3,000 − 500t

Lastly, we must find the altitude when if t = 5:

A(5) = 3,000 − 500(5)

Solving, we obtain:

A(5)=3,000 − 2,500 = 500

Hence the answer is, Five minutes into the descent the airplane has an altitude of 500 feet.

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