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3 years ago

Please help w/ this thx

Mathematics

2 answers:

andrew-mc [135]3 years ago

7 0

The answer is a , 28 square ft.

Likurg_2 [28]3 years ago

7 0

Answer:

A 28 sq feet

Step-by-step explanation:

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Max bought tools costing $75. He made a $30 down payment and plans to pay off The rest of the money and five monthly installs ho

Leokris [45]

Answer:

Amount financed

75−30=45

Monthly payment

45÷5=9

Step-by-step explanation:

3 0

3 years ago

An experienced bricklayer can work twice as fast as an apprentice bricklayer. After the bricklayers work together on a job for 4

Veronika [31]

Answer:

7 hours.

Step-by-step explanation:

An experienced bricklayer can work twice as fast as an apprentice bricklayer. The apprentice needs 14, so 14/2=7

4 0

3 years ago

Find the y-intercept of the graph of the equation y=-3x-4

Nataly [62]

Y=mx+b Slope is m Y intercept is b So it's-4

5 0

4 years ago

I need help with this question. IT IS NOT MULTICHOICE. again, IT ISNT MULTICHOICE. (brainliest, 12 pts)

Rasek [7]

Answer:

Part A) The given enrollment numbers as a pair of points are (0,900) and (3,1,500)

Part B) The slope of the line is $m=200\ \frac{students}{year}$ (see the explanation)

Part C) $P=200t+900$

Part D) $P=2,500\ students$

Step-by-step explanation:

Part A) Write the given enrollment numbers as a pair of points in the form (t,P)

Let

t ----> the number of years since 2009 (independent variable or input value)

P ---->the high school's student enrollment (dependent variable or output value)

we know that

For t=0 (year 2009) ----> P=900 students

The first ordered pair is (0,900)

For t=2012-2009=3 years ----> P=1,500 students

The second ordered pair is (3,1,500)

therefore

The given enrollment numbers as a pair of points are (0,900) and (3,1,500)

Part B) Find the slope of the line passing though the pair of points

we know that

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

we have

(0,900) and (3,1,500)

substitute the values

$m=\frac{1,500-900}{3-0}$

$m=\frac{600}{3}$

$m=200\ \frac{students}{year}$

That means that the high school's student enrollment increase at rate of 200 students by year since 2009

Part C) Write an equation that relates the high school's student enrollment, P, to the number of years since 2009, t

we know that

The equation of a line in slope intercept form is equal to

$P=mt+b$

where

m is the slope

b is the P-intercept

In this problem we have

$m=200$

$b=900$ ---> represent the initial value ( value of P when the value of t is equal to zero)

substitute

$P=200t+900$

Part D) Predict the high school's enrollment in 2017

For t=2017-2009=8 years

substitute the value of t in the linear equation

$P=200(8)+900$

$P=2,500\ students$

3 0

3 years ago

Triangle QRS has coordinates Q(-2, -2), R(0, 3), and S(4, -2) and is dilated by a scale factor of 2. Determine the new coordinat

o-na [289]

Given:

Triangle QRS has coordinates Q(-2, -2), R(0, 3), and S(4, -2) and is dilated by a scale factor of 2.

To find:

The new coordinates of point S', and state whether the dilation is an enlargement or a reduction.

Solution:

If a figure is dilated by factor k with origin as center of dilation, then

$(x,y)\to (kx,ky)$

Where, 0<k<1 is reduction and k>1 is enlargement.

The figure is dilated by scale factor 2 which is greater than 1, so the dilation is an enlargement. The rule of dilation is:

$(x,y)\to (2x,2y)$

Using this rule, we get

$S(4,-2)\to S'(2(4),2(-2))$

$S(4,-2)\to S'(8,-4)$

Therefore, the new coordinates of point S' are (8,-4).

3 0

3 years ago