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Stella [2.4K]
3 years ago
9

Help pls *giving brainliest*

Mathematics
1 answer:
MatroZZZ [7]3 years ago
3 0

Answer:

Don't worry! This is not that hard! You got this! You can use this for checking :)

Plus we have to use x-y and use the numbers given for each question

15. x-y if x=6 and x=-3

6-(-3)  negative plus negative equals positive

6+3= 9

16. x= -7 x=1

-7-1= -8

17. x=-2 y=-6

-2-(-6)    negative plus negative equals positive

-2+6= 4

18. x=9 y=11

9-11= -2

19. x=-1 y=-1

-1-(-1)

-1+2= 1

20. x=-5 y=5

-5-5= -10

21. The high temp. is 6 and the low temp. is -3 It sasking for the differnece between the two.

6-(-3)

6+3=9

The difference between the high temp. and low temp. is 9 degrees Fahrenheit

22. This question is a little tricky but don't worry!

From -7 to 7. To reach -7 to 0, that is 7 degrees. To reach 7 from 0, that is also 7 degrees. So you add 7 and 7!

7+7= 14

The temperature increased 14 degrees Fahrenheit.

Hope this helps! Good luck on your quiz and I hope you pass :)

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fiasKO [112]

f(h(x))= 2x -21

Step-by-step explanation:

f(x)= x^3 - 6

h(x)=\sqrt[3]{2x-15}

WE need to find f(h(x)), use composition of functions

Plug in h(x)

f(h(x))=f(\sqrt[3]{2x-15})

Now we plug in f(x) in f(x)

f(h(x))=f(\sqrt[3]{2x-15})=(\sqrt[3]{2x-15})^3 - 6

cube and cube root will get cancelled

f(h(x))= 2x-15 -6= 2 x-21

6 0
3 years ago
At the beginning of an environmental study, a forest covered an area of 1500 km2 . Since then, this area has decreased by 9.8% e
fredd [130]

Answer:

A(t)=(0.902)^t \cdot 1500 [km^2]

Step-by-step explanation:

In this problem, the initial area of the  forest at time t = 0 is

A_0 = 1500 km^2

After every year, the area of the forest decreases by 9.8%: this means that the area of the forest every year is (100%-9.8%=90.2%) of the area of the previous year.

So for instance, after 1 year, the area is

A_1 = A_0 \cdot \frac{90.2}{100}=0.902 A_0

After 2 years,

A_2=0.902 A_1 = 0.902(0.902A_0)=(0.902)^2 A_0

And so on. So, after t years, the area of the forest will be

A(t)=(0.902)^t A_0

And by substituting the value of A0, we can find an explicit expression:

A(t)=(0.902)^t \cdot 1500 [km^2]

8 0
3 years ago
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Answer:

Is this a complete question?

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3 years ago
ANSWER THISSSS AS GIVEN PLEASEEEEEEE
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Answer:

maybe 30?????

Step-by-step explanation:

sorry if it wrong I'm in the Same finals

4 0
2 years ago
Read 2 more answers
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