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2 years ago

X=-3 Graph the following equation

Mathematics

1 answer:

Sever21 [200]2 years ago

4 0

Answer:

x=-3

Step-by-step explanation:

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Evaluate 2r +1 if r=3

Evgesh-ka [11]

Answer:

Step-by-step explanation:

So, substitute in your 4 for r, 2(3) + 1. Multiply 2 and 3 to get 6 and then add a to get 7. I hope this helps :)

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3 years ago

The school wishes to purchase 2500 pens and have discovered that 3 stores sell the same model pen.Which store has the best buy ?

8_murik_8 [283]

$Store\ A: \frac{0.5}{15}=0.0333\ cents\ per\ pen \\ \\ Store\ B: \frac{1.7}{50}=0.034\ cents\ per\ pen \\ \\ Store\ C: \frac{0.9}{30} =0.03\ cents\ per\ pen \\ \\ Store\ C\ is\ the\ cheapest.$

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3 years ago

A bakery will make 5,400 graham crackers. The graham crackers are packaged in boxes of 60. How many boxes of graham crackers wil

inna [77]

Answer:

90 boxes

Step-by-step explanation:

If you divide 5,400 by 60 you get 90. Hope this helps, let me know if correct, and have a great day!!

8 0

3 years ago

Read 2 more answers

3. Sam and Tim each have savings accounts. Every month they each put in some of their

Setler [38]

Answer:

$y = 30x +50$ --- Sam

$y = 20x +80$ --- Tim

Step-by-step explanation:

Given

Sam Tim

х --- f(x) --------------- g(x)

1 --- 80 --------------- 100

2 --- 110 --------------- 120

3 --- 140 --------------- 140

4 --- 170 -------------- 160

Required

Determine the y value

y value implies the equation of the table

Calculating the equation of Sam

First, we need to take any corresponding values of x and y

$(x_1,y_1) = (1,80)$

$(x_2,y_2) = (4,170)$

Next, we calculate the slope (m)

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$m = \frac{170 - 80}{4 - 1}$

$m = \frac{90}{3}$

$m = 30$

Next, we calculate the line equation using:

$y - y_1=m(x-x_1)$

$y - 80 = 30(x - 1)$

$y - 80 = 30x - 30$

Make y the subject

$y = 30x - 30 + 80$

$y = 30x +50$

Calculating the equation of Tim

First, we need to take any corresponding values of x and y

$(x_1,y_1) = (1,100)$

$(x_2,y_2) = (4,160)$

Next, we calculate the slope (m)

$m = \frac{y_2 - y_1}{x_2 - x_1}$

$m = \frac{160 - 100}{4 - 1}$

$m = \frac{60}{3}$

$m = 20$

Next, we calculate the line equation using:

$y - y_1=m(x-x_1)$

$y - 100 = 20(x - 1)$

$y - 100 = 20x - 20$

Make y the subject

$y = 20x - 20+100$

$y = 20x +80$

7 0

2 years ago

Find the scale factor that was used

zimovet [89]

Scale factor is 2
30/15 = 2
20/10 = 2

3 0

2 years ago

Read 2 more answers