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Vikentia [17]
2 years ago
15

Evaluate the expression when r = 3. 15r

Mathematics
1 answer:
Liula [17]2 years ago
8 0

Answer:

45

Step-by-step explanation:

Because if you replace the r with 3, it would be 15(3).

15(3) is the same as 15 × 3.

15 × 3 = 45

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brian and shawna are selling cookie dough. ryan sold 6 packod cookie dough and 12 packages of gingerbread cookies dough for a to
Bogdan [553]

Answer:

Chocolate chip dough = $12

Gingerbread cookie dough = $17

Step-by-step explanation:

Since there are two variables in this problem, setting up a system of equations and using the elimination method will help us find the cost for each package of cookie dough.  Based on Ryan's sales of 6 packages of chocolate chip and 12 packages of gingerbread for $276, the first equation is:

6c + 12g = 276

Since Shawna sold 8 chocolate chip and 3 gingerbread for a total of $147.00, the second equation is:

8c + 3g = 147

Using the elimination method, we will need to multiply the second equation by a factor of -4 in order to eliminate the variable 'g':

-4(8c + 3g = 147) = -32c - 12g = -588

Add the two equations:

6c + 12g = 276

+ <u> -32c - 12g = -588</u>

-26c = -312  or c = $12

Plug the value of 'c' into the first equation:

6(12) + 12g = 276 or 72 + 12g = 276 or g = $17

8 0
3 years ago
How do you convert 4/25 into a percent
Alex777 [14]
You see how many times 4 can go into 25 witch is 6 not 7 because 7 x 4 is28 and 28is bigger than25 so the answer is and 1/4 is25 cence so the answer is 4.25
7 0
3 years ago
Read 2 more answers
An exponential function is expressed in the form y=axb^x. The relation represents a growth when ________ and a decay when_______
ArbitrLikvidat [17]

Answer:

Growth when: b>1.

Decay when: 0<b<1.

Step-by-step explanation:

Any function in the form f(x) =a\times b^x , where a > 0, b > 0 and b not equal to 1 is called an exponential function with base b.

if 0 < b < 1.  It is an example of an exponential decay.

The general shape of an exponential with b > 1 is an example of exponential growth.

Hence,

An exponential function is expressed in the form y=a\times b^x The relation represents a growth when  b >1 and a decay when 0<b<1.

4 0
2 years ago
Over the last four months, the number of building blocks sold to parents of preschoolers increased. During the same time period,
Naya [18.7K]

Interpretation:

B.

Why?

I think it is B. because you can buy the building blocks first, and then find an educational video about the blocks. I hope this helps!

8 0
3 years ago
Which of the following is the algebraic expression that best describes the height y, if x is the width?
Nookie1986 [14]
The answer is y=3x my work is shown in the pic
3 0
2 years ago
Read 2 more answers
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