3 years ago

Paula bought 2 video games and a $15 iTunes gift card her total bill was 28.50 write an equation to represent what she purchased

Mathematics

1 answer:

vampirchik [111]3 years ago

7 0

2x+15=28.50 is the answer

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A rectangle has a perimeter of 112 centimeters. if the length of the rectangle is 3 times its width, find the dimensions of the

ss7ja [257]

112/2=56 (sum of both lengths)
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3 years ago

Please help explanation if possible

Nookie1986 [14]

Answer:

y=-3x+5

Step-by-step explanation:

concepts: y=mx+b is slope intercept equation formula

m=slope

b= y intercept

Therefore we need to find the slope and y intercept

first find slope

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

let y2 be 2

let y1 be -4

let x2 be 1

let x1 be 3

$\frac{2-(--4)}{1-3}$

6/-2 = -3

m=-3

slope is -3

y= -3x+ b

we need find y intercept now

just plug in (1,2) into that equation

2=-3(1)+b

b=5

y=-3x+5

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2 years ago

What are the zeros of f(x)=x^2+x-20?

zzz [600]

F(x) = x² + x - 20 = x² + 5x - 4x - 20 = x(x + 5) - 4(x + 5) = (x + 5)(x - 4)

f(x) = 0 ⇔ (x + 5)(x - 4) = 0 ⇔ x + 5 = 0 or x - 4 = 0 ⇒ x = -5 or x = 4

Answer: C. x = -5 and x = 4.

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3 years ago

Write the words for:<br><br> (3/4 - 1/5) x 4:

adoni [48]

Answer:

three-forth minus one-fifth times four

Step-by-step explanation:

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The variability measures the closeness of the individual data provided. So, the most reliable sampling is the one with the lowest variability.

For this case, the question with the lowest sampling variability is question 3. Therefore, we can conclude that the answers to which of the questions are most reliable is question 3.

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3 years ago