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3 years ago

Will someone PLEASEEEE help me find the coordinates to these !

Mathematics

1 answer:

Xelga [282]3 years ago

3 0

Answer:

883037%

Step-by-step explanation:

i thank thats the we way we did it i am not shure

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What is the value of f(-2) if f(x) = - 3x2 + 4x - 1

pashok25 [27]

Given the function below:

$\large{f(x) = - 3 {x}^{2} + 4x - 1}$

To find f(-2), we substitute x = -2 in the equation. Since f(-2) means the value of f(x) at x = -2.

$\large{f( - 2) = - 3 {( - 2)}^{2} + 4( - 2) - 1}$

Replace x-term to -2 and evaluate.

$\large{f( - 2) = - 3(4) - 8 - 1} \\ \large{f( - 2) = - 12 - 8 - 1 \longrightarrow f( - 2) = - 21}$

Answer

f(-2) = -21

Let me know if you have any doubts!

4 0

3 years ago

How to find r in this equation using combination formula C(8,r)=28

slavikrds [6]

Answer:

r = 2

Step-by-step explanation:

We have the formula of $^nC_r = \frac{n!}{r! (n-r)!}$

Now, it is given that $^8C_r = \frac{8!}{r! (8-r)!} = 28$ ........ (1)

And we have to find the value of r which satisfy the above equation.

So, $r! (8-r)! = \frac{8!}{28} = \frac{40320}{28} = 1440$

Now, we have to use the trial method to find the value of r.

For r = 1, $1! (8-1)! = 7! = 5040 \neq 1440$

Hence, r can not be 1.

Now, put r = 2, $2! (8-2)! = 2 \times 6! = 1440$

Therefore, r = 2 (Answer)

5 0

3 years ago

Read 2 more answers

Solve 5y 2 = 405 9 ±9 ±81

Agata [3.3K]

5y^2 = 405
y^2 = 405/5
y^2 = 81
y = - 9 and y = 9

answer
±9

5 0

3 years ago

Liz and Alana each participate in the home that jump at the track meet Liz’s high jump was 1 meter Alana’s high jump was 132 cen

brilliants [131]

1 meter is 100 centimeters, therefore Alana jumped higher by 32 centimeters.
132-100=32

7 0

3 years ago

Solve this equation: 10x = -70 X=

Simora [160]

Answer:

x=-7

Step-by-step explanation:

-70/10x= -7x

5 0

4 years ago

Read 2 more answers