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kherson [118]
3 years ago
9

Mary's math certificate is 10 inches tall and 13 inches wide. Mary wants to put the certificate

Mathematics
1 answer:
wlad13 [49]3 years ago
8 0

Answer:

$219.70

Step-by-step explanation:

First, you need to find the area of the certificate, which you can do by multiplying 10*13, since it is a rectangle. 10*13 is 130. Then, multiply 130 by the price per inch, which is $1.69. 130*1.69=219.7, which in financial terms would amount to $219.70.

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What is the average rate of change for ƒ(x) = −2x + 70 over the interval 2 ≤ x ≤ 6?
Anvisha [2.4K]

Answer:

The average rate of change is -2

Step-by-step explanation:

we know that

To find out the average rate of change, we divide the change in the output value by the change in the input value.

In a linear function the average rate of change is a constant and is equal to the slope of the function

The linear function in slope intercept form is equal to

f(x)=mx+b

where

m is the slope or unit rate of the linear function

b is the y-intercept or initial value of the linear function

In this problem we have

f(x)=-2x+70

so

m=-2\\b=70

therefore

The average rate of change is -2

4 0
3 years ago
.....................................
Mandarinka [93]

\frac{5}{a + 3} = \frac{3}{a - 2}

5(a - 2) = 3(a + 3)

5a - 10 = 3a + 9

5a - 3a = 9 + 10

2a = 19

a = \frac{19}{2} = 9 \frac{1}{2}

Answer = D.) a = 9 \frac{1}{2}

\textbf{Spymore}​

4 0
3 years ago
translate this phrase into an algebraic expression 59 Less than twice a number use the variable n to represent the unknown numbe
Semenov [28]

To write the given phrase as an algebraic expression you can identify what does each part of the phrase mean:

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Then, you get the next algebraic expression:

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3 0
1 year ago
What is 5.6 × 10^−3 yd/year in feet per day?  
Soloha48 [4]
5.6x10^-3 yd/year in feet per day.

There are 3 feet in a yard

(5.6x10^-3)x3=1.68x10^-2 feet/year
Let's take there to be 365 days in the year (Fun fact: The actual duration of our year is <span>365 days 5 hours, 48 minutes 46 seconds)

</span>\frac{1.68*10^{-2}}{365} = 4.6*10^{-5}
<span>
Therefore the correct answer is D.</span>
8 0
3 years ago
Simplify 4^9/4^3<br>A 4^5<br>B 4^6<br>C 4^12<br>D 4^27<br>​
FinnZ [79.3K]

Answer:

the answer there is B. 4^6

Step-by-step explanation:

you would subtract the exponents

5 0
3 years ago
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