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azamat
3 years ago
8

F(x)= -3x+7 what is f(-20)?

Mathematics
1 answer:
TEA [102]3 years ago
6 0

Answer:

67

Step-by-step explanation:

Evaluate 7 - 3 x where x = -20:

7 - 3 x = -3 (-20) + 7

Hint: | Multiply -3 and -20 together.

-3 (-20) = 60:

60 + 7

Hint: | Evaluate 60 + 7.

60 + 7 = 67:

Answer: 67

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Nathena needs to buy a fence to put around her rectangular yard for her dog. Nathena forgot the width of his yard, but knows the
BabaBlast [244]

Answer:

The real answer is 6

Step-by-step explanation:

Fairly simple. You know the length and the area, but you don't know the width. So your equation looks like this: 30 x ? = 180. But to figure out the width, you change the position of the numbers in the equation like this:

180 ÷ 30 = ?. Then you solve. 180 ÷ 30 = 6. If you want to double check your answer, you can plug in your answer to your original equation, 30 x 6 = 180.

Hope this helps!

7 0
3 years ago
Read 2 more answers
Sevierville Middle School arranges their sports
hram777 [196]

Answer:1

Step-by-step explanation: The problem states that each row has only one kind of trophy so the only answer i could think of is one

8 0
4 years ago
Aldos coffee shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Aldo $4.15 per pound, and type of
bogdanovich [222]

Let A represent amount of Type A coffee pounds used.  

Let B represent amount of Type B coffee pounds used

A + B = 156  

B = 156 - A  

A = 156 - B

5.80A + 4.65B = 826.60  

580 (156 - B) + 4.65B - 826.60 = 0  

904.8 - 5.80B + 4.65B - 826.60 = 0

904.8 - 1.15B - 826.60 = 0  

78.2 - 1.15B = 0  

78.2/1.15 = 1.15B/1.15

68 = B

B = 68 pounds of Type B coffee

There's many more steps you can take to check and etc but am too lazy to put down sorry.

3 0
3 years ago
A bookstore observes that 2 out of 9 books sold are returned, if 360 books are sold how many will be returned
konstantin123 [22]

Answer:

79.992

Step-by-step explanation:


4 0
3 years ago
Solve 5x - 8y = 11 for y.
disa [49]

Answer:

y = \frac{5x-11}{8}

Step-by-step explanation:

Given

5x - 8y = 11 ( subtract 5x from both sides )

- 8y = 11 - 5x ( multiply through by - 1 )

8y = - 11 + 5x = 5x - 11 ( divide both sides by 8 )

y = \frac{5x-11}{8}

3 0
3 years ago
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