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Ymorist [56]
3 years ago
8

F(x)=2(3-x),find f(-7)

Mathematics
1 answer:
Sauron [17]3 years ago
6 0

Answer:

f(-7) = 20

Step-by-step explanation:

Given:

f(x) = 2(3 -x)

Solving for f(-7):

f(-7) = 2(3 -(-7)) \\ f(-7) = 2(3 +7) \\ f(-7) = 2(10) \\ f(-7) = 20

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Marcia has $84 less than three times as much as sue. together they have $132. how much money does marcia have?
Brut [27]
Let x = sue
and then let 3x-84 = marcia
therefore
(x)+(3x-84)=132
4x-84=132
4x=216
x=54

however just solving for x doesnt completely solve. it only shows sues money because x = sue
for marcia
3x-84
3(54)-84
162-84
78

therefore Marcia has 78$.
5 0
3 years ago
There are 11 books on a shelf. 5 of these books are new. (a) What is the ratio of new books to used books? (b) What is the ratio
ser-zykov [4K]
A) 
Since 5 of the books are new, that means that the other books are used. So, there are 11-5=6. The ratio would be 5:6.

b) 
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Hope this helps!
8 0
3 years ago
Aveeno and her boyfriend you know who wrote the bus six times in a month it cost $40 for the two of them each time if Avena alwa
MaRussiya [10]

Answer: The cost for the month is $240.

Step-by-step explanation:

Since we have given that

Cost for the two i.e Aveeno and her boyfriend = $40

They were charged 6 times in a month.

As we know that times stands for multiplication.

So, we need to find the cost for the month, where we multiply 6 with $40 to get the amount for the whole month.

So, the amount for the month would be

40\times 6=\$240

Hence, the cost for the month is $240.

4 0
3 years ago
Use the relationship between the angles in the figure to answer
Sholpan [36]
31+40 = 71. 180-71=109
5 0
3 years ago
Read 2 more answers
Take a look at the figure. What are the coordinates of the point labeled A in the graph shown?
Misha Larkins [42]

Answer:

(2,-2)

Step-by-step explanation:

Point A is 2 units to the right of the origin so the x coordinate is 2

It is also 2 units down so the y coordinate is -2

The point is (x,y) so A = (2,-2)

4 0
2 years ago
Read 2 more answers
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