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aliya0001 [1]
3 years ago
15

{2}x^{2} + 4x - 7" alt="f(x) = {2}x^{2} + 4x - 7" align="absmiddle" class="latex-formula">
find f(4)
Mathematics
1 answer:
sukhopar [10]3 years ago
6 0

For this, plug in 4 into the x placeholder to solve:

f(4)=2*4^2+4*2-7\\ f(4)=2*16+8-7\\ f(4)=32+8-7\\ f(4)=33

<u>In short, f(4) = 33.</u>

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Hayley borrowed $1,854 from her parents. She agreed to repay them in equal installments throughout the next 18 months. How much
Serggg [28]

Answer: $ 618

Step-by-step explanation:

Money borrowed =  $1,854

Total months taken to repay = 18  (Number of installments)

Money paid per month = \dfrac{\text{Money borrowed}}{\text{Number of installments}}

=\dfrac{1854}{18}=\$103

Now , money paid in 1 year = 12 x $ 103 =$ 1236     [1 year = 12 months ]

After a year , Haley still owe =  $1,854 -  $ 1236= $ 618

Hence, Haley still owe her parents $618 after a year .

7 0
3 years ago
I NEED MEGA HELP WITH THIS QUESTION
katrin2010 [14]

Answer:

C. y =  -  \frac{1}{4} x - 2

Step-by-step explanation:

To find slope using coordinates, use the formula above.

(4, - 3) \: (0, - 2)→ \frac{ - 2 - ( - 3)}{0 - 4}→ \frac{ - 2 + 3}{ - 4} → -  \frac{1}{4}

Now, using the y = mx + b formula, plug in -  \frac{1}{4} as m (slope) and either coordinate as the x and y values. It looks like this:

- 3 =   - \frac{1}{4}(4)  + b

To solve for b, continue to use PEMDAS.

- 3 =   - \frac{1}{4}(4)  + b→ - 3 =  - 1 + b→ - 2 = b

Now use m and b to solve for your equation:

y =  -  \frac{1}{4} x - 2

The answer is C.

4 0
3 years ago
The null and alternative hypotheses are given. Determine whether the hypothesis test is​ left-tailed, right-tailed, or​ two-tail
Dahasolnce [82]

Answer:  The parametric is being tested here is "p" (population proportion).

The hypothesis test is​ left-tailed.

Step-by-step explanation:

Given : The null and alternative hypotheses are

H_0:\ p=0.2\\\\H_1:\ p

The parametric is being tested here is "p", where p stands for population proportion.

Also, the type of test depends on the alternative hypotheses.

Since the alternative hypotheses is left-tailed, so the hypothesis test is​ left-tailed.

8 0
3 years ago
Does anyone know how to do the problem
salantis [7]
8x^3 + 2x^2 - 18x -12
6 0
3 years ago
Simplify: -c - 8(4c - 5) - (-18c + 3)
d1i1m1o1n [39]

Answer:

-15c + 2

Step-by-step explanation:

you start by multiplying the coefficients of the parentheses to the numbers inside which gives you

- c - 32c + 5 + 18c - 3

then you simply just group together the like numbers. all "c" 's go together and everything without a "c" goes together

- 1c - 32c + 18c= -15c

5 - 3 = 2

the final answer simplified is

-15c + 2

6 0
3 years ago
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