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3 years ago

PLEASE HELP I NEED IT BADLY

Mathematics

1 answer:

nikdorinn [45]3 years ago

5 0

The answer would be 104:

$10.2^{2}$ = 104.04

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Please help!

katovenus [111]

Answer: f(3.5) = 58.20

Step-by-step explanation:

Wow...what degree of exponent are we to assume?

I'll go with 2 as we are only given two exemplars.

f(x) = x² + Ax + B

f(- 2.5) = 9 = (-2.5)² + (-2.5)A + B

f(2.5) = 45 = (2.5)² + (2.5)A + B

we can subtract the first equation from the second

45 - 9 = 2.5² - (-2.5)² + 2.5A - (-2.5A) + B - B

36 = 5A

A = 7.2

45 = (2.5)² + (2.5)7.2 + B

B = 20.75

F(3.5) = 3.5² + 7.2(3.5) + 20.75 = 58.2

6 0

3 years ago

4x – 5y when x = 2, y = 4. Please show your work and please get the answer right thank you

Alisiya [41]

Answer:

- 12

Step-by-step explanation:

Substitute both the values of x and y in the equation given

x=2, y=4

4(2)-5(4)= 8-20

= - 12

7 0

3 years ago

Select the correct answer.

Ganezh [65]

Answer:

C. 6x(x² + 4x - 12)

Step-by-step explanation:

Factor $6x^{2}$ out of $6x^{4}$

$6x^{2}$ ( $x^{2}$ ) + $6x^{2}$ + $24x^{3} - 72x^{2}$

$6x^{2}$ ( $x^{2}$ ) + $6x^{2}$ ( $4x$ ) $-72x^{2}$

$6x^{2}$ ( $x^{2}$ ) + $6x^{2}$ ( $4x$ ) + $6x^2$ (-12)

$6x^{2}$ ( $x^{2}$ + $4x$ ) + $6x^{2}$ (-12)

$6x^{2}$ ( $x^{2}$ + $4x$ - 12 )

8 0

3 years ago

Read 2 more answers

Solution set of 5/11x+1/3=3/7-6/11x+3/7

kirill115 [55]

$\frac{5}{11x} + \frac{1}{3} = \frac{3}{7} - \frac{6}{11x} + \frac{3}{7} \\ \frac{11}{11x} = \frac{6}{7} - \frac{1}{3} \\ \frac{1}{x} = \frac{11}{21} \\ x = \frac{21}{11} = 1 \frac{10}{11}$

6 0

3 years ago

Question 10 options: It takes 15 minutes to cook 1 pound of turkey. If you have a 21 pound turkey, how many hours/minutes will i

Maksim231197 [3]

Answer:

$5\ hours\ and\ 15\ minutes$ , or $5.25\ hours$ , or $315\ minutes$

Step-by-step explanation:

You know that 1 pound of turkey can be cooked in 15 minutes.

Then, in order to find the time it takes to cook 21 pounds of turkey, you can set up the following proportion:

$\frac{15\ minutes}{1\ pound}=\frac{x}{21\ pounds}$

Now you must solve for "x":

$(21\ pounds)(\frac{15\ minutes}{1\ pound})=x\\\\x=315\ minutes$

Since $1\ hours=60\ minutes$ , you can express the time as:

$(315\ minutes)(\frac{1\ hour}{60\ minutes})=5.25\ hours$ or $5\ hours\ and\ 15\ minutes$

8 0

3 years ago