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ASHA 777 [7]
3 years ago
14

Given the function f(x)=x^2+2x+1, find a f(−7)

Mathematics
1 answer:
tatuchka [14]3 years ago
3 0

Answer:

36

Step-by-step explanation:

f(x)=x^2+2x+1

Let x = -7

f(-7)=(-7)^2+2*-7+1

     = 49 -14+1

     = 36

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Expand and simplify<br> (x – 3)(2x - 2)
vekshin1

Answer:

2x^2 - 8x + 6

Step-by-step explanation:

2x*x+(-3x*2x)+(x*(-2))+6=

2x^2-8x+6

6 0
3 years ago
Suppose y varies inversely with x. Write an equation if y=7 when x=-4
luda_lava [24]

Answer:

y = -28 ÷ x

Step-by-step explanation:

The standard format of a inversely proportional equation goes by the format of y = k ÷ x. The question asks us to write an equation if y = 7 when x = -4 and y varies inversely with x.

So we substitute the values y = 7 and x = -4 in the equation y = k ÷ x

K = constant, we have to work this out

7 = k ÷ -4

7 × - 4 = k

k = - 4 × 7

k = -28

k = -28 So then we put this back into the original y = k ÷ x to find our final equation which is y = -28 ÷ x

3 0
3 years ago
The product of two ratio rational numbers is 48/5. If one of the rational number is 66/7, find the other rational number.
goldenfox [79]
Let x = the other rational number.

x(66/7) = (48/5)

Solve for x to find your answer.
3 0
3 years ago
900 is what percent of 1200
xeze [42]

Answer:

75%

Step-by-step explanation:

900 /1200=  .75=75%

8 0
3 years ago
a father is 43 years old and his 2 children is 8 and 6 years old. how many years will the sum of the ages of the two children be
elena55 [62]

Answer:

Step-by-step explanation:

29 years they are combined ages the same and if this goes up 2:1 ratio every year thereafter from age 43 then to change 29:43 to make double it is x 8 43 x 8= 344 and  29 x16=464. The ages never become double.

7 0
3 years ago
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