f(x) = 2x2 – 15
Find f(-2)

Answers

Answer 1
f(x) = 2x^2 -x -15 = 0

Related Questions

can somebody help me ?

Answers

I believe it is B.) 110°

Brianna ran 6 laps around a circular track with the diameter of 120 feet how far did she run

Answers

Answer:

2261.94671

Step-by-step explanation:

You must first find the circumference of the track. Using 2(pi)r.

Where pi=3.14... and r=radius

you can find the radius by dividing the diameter by 2, 120/2=60

Afterwards you input 60 into the equation. 60*(pi)*2= 376.99111843077515

Using that number you multiply it by 6 because she ran the circumference 6 times. 6*376.99111843077515 = 2261.94671

NOTE: The question may require you to simplify at certain times so answers may vary slightly. EX: pi = 3.14, Circumference = 377

Find last year’s salary if, after a 5% pay raise, this year’s salary is $40,950

Answers

Answer:

3900

Step-by-step explanation:

40950/1.05

Answer:

3900 I think

the 1 st one is corect

solve for x. pls help

Answers

Answer: -2

Step-by-step explanation:

Hope this helps <!>BRAINILEST NEEDED <!> Pls help me 2 :)

X=2 hope this helps :)

The price of fancy coffee has increased 9% each year for the last several years.
If the current cost $8 per pound, what did a pound cost two years ago

Answers

Answer:

$6.56

Step-by-step explanation:

First, take 8 and divide it by 100. Then you have 0.08. multiply that by 9. You get 0.72, that is how much the price increases every year. multiply that by 2, and you get 1.44. subtract 1.44 from 8, and you are left with $6.56, the price it was two years ago.

ALGEBRA NATION!!! NEED HELP :(

Answers

Length of AC is 5 I hope this helps I can’t think right right now so bare with me











Please help. Brainliest mark

Answers

Answer. A
Explanation. slope intercept form is y= mx + b. m represents the slope and b represents the y intercept (the point where the line meets the y-axis). We know that the slope is 1/3 but since the y-point is 0, there is no VISIBLE “b” in the equation. The correct solution is A :)
good luck.

The rectangles shown above are similar.
What is the measure of x?

A. 44 millimeters

B. 46 millimeters

C. 55 millimeters

D. 66 millimeters

Answers

Answer:

the answer is d 66 millimetres

Step-by-step explanation:

you have you solve it by doing multiplication and divide it by what ever number you have

Find the size of the angle BAC in the following triangle:


Answers

Answer:

Step-by-step explanation:

Sin A=5/8=0.625

[tex]A=sin^{-1} (0.625) \approx 36.68 ^\circ \\\approx 36.7^\circ\\\approx 37^\circ[/tex]

Length:

Side A = 5  cm

Side B ~9.434 cm

Side C = 8 cm

... Perimeter: ~22.434

... Area: 20

Angle:

Angle ∠A = 32.005°

Angle ∠B = 90°

Angle ∠C = 57.995°

There are 876 students in a school. There are 46 more boys than girls. How
many boys are there?

Answers

Answer:

(876 + 46) ÷ 2 = 461 boys

Answer:

876/2

=438

=438+46

=484 boys are there in a school.

Barry made the model to show multiplying a fraction by a fraction. Which multiplication sentence does the model show? A grid with 3 rows of 6 columns showing 18 squares total. The 12 squares in the top two rows are shaded yellow, the 15 squares in the first 5 columns are shaded blue. The shading overaps to make green in 10 squares. 13×23=29 26×56=518 13×26=19 23×56=59

Answers

Given:

Number of rows = 3

Number of columns = 6

Number of square boxes = 18

yellow square boxes in the top two rows = 12

Blue square boxes in the first 5 columns = 15

Number of green boxes (shading overlaps) = 10

To find:

The model to show multiplying a fraction by a fraction.

Solution:

2 rows out of 3 are shaded yellow.

Fraction for yellow = [tex]\dfrac{2}{3}[/tex]

5 columns out of 6 are shaded blue.

Faction for blue = [tex]\dfrac{5}{6}[/tex]

10 out of 18 squares are green.

Faction for green =  [tex]\dfrac{10}{18}=\dfrac{5}{9}[/tex]

Now,

[tex]\dfrac{2}{3}\times \dfrac{5}{6}=\dfrac{10}{18}[/tex]

[tex]\dfrac{2}{3}\times \dfrac{5}{6}=\dfrac{5}{9}[/tex]

Therefore, the correct option is D.

The correct option is D.

The calculation is as follows:

2 rows out of 3 are shaded yellow.

Fraction should be [tex]2\div 3[/tex]

Now

5 columns out of 6 are shaded blue.

Fraction should be [tex]5 \div 6[/tex]

And,

10 out of 18 squares are green.

Fraction should be  [tex]10 \div 18 = 5\div 9[/tex]

Now

[tex]\frac{2}{3} \times \frac{5}{6} = \frac{10}{18}\\\\ \frac{2}{3} \times \frac{5}{6} = \frac{5}{9}[/tex]

Learn more: https://brainly.com/question/10309631?referrer=searchResults

Can you guys help with this one?

Answers

The scale of enlargement is 2. This is because the side of the triangle of the right is twice as large as the size of the same side on the triangle on the left.
The length of PR would be 14. This is because since you’re doubling the size of the sides, the new length will be 7x2.
Hope this helps :)

A square window has an area of 196
square feet. What is the length of each
side of the window?

Answers

Answer:

14 feet

Step-by-step explanation:

s2 = 196

Help me pls dodkrkkdiodod

Answers

Answer:

2 with an exponent of 6,

Example: 2x2x2x2x2x2

The exponent is just the number multiplied that many times to itself

Step-by-step explanation:

Example: 2x2x2x2x2x2 =

2x2=4x2=8x2=16 and so on

Hope this helped!

Answer:

i73489013848eirrlgdjfknkln cklvnbklncb nclxnklzndlgkfnxdknsklnlzndjsknjkdnfksnznfjnzjkfnnzknlnkznskdnzjksnvnv

Step-by-step explanation:

The actual length of Wall C is 4 m. To represent Wall C, Noah draws a segment 16 cm long. What scale is he using? Explain or show your reasoning.
Find another way to express the scale.

Answers

Answer:

Step-by-step explanation:

I ha d the same question! what I’ve been seeing is 1 m = 4 cm if it makes sense ..

At a charity fund raiser , adult tickets were sold for 8$ children each and children’s tickets were sold at 2$ each. write an algebraic expression for the total amount raised from the sale of tickets. How much money was raised if the fundraiser sold 238 adult tickets and 375 children’s tickets?

Answers

Answer:

2,654$

Step-by-step explanation:

8a + 2c

8 x 238 = 1,904

2 x 375 =  750

750 + 1,904 = 2,654

2,654$

Hopefully this helps you

pls mark brainlest

What factor is missing 30+12= X
(5+2)

Answers

The missing factor is 6

Evaluate the expression below using the properties of operations. Show your steps to receive full credit. −36 ÷ 14 ⋅ (−18) ⋅ (−3) ÷ 6

Answers

Answer:

(-162)/7 or -23 1/7 as a mixed fraction

Step-by-step explanation:

Simplify the following:

(-36)/14 (-18) (-3)/6

Hint: | Express (-36)/14 (-18) (-3)/6 as a single fraction.

(-36)/14 (-18) (-3)/6 = (-36 (-18) (-3))/(14×6):

(-36 (-18) (-3))/(14×6)

Hint: | In (-36 (-18) (-3))/(14×6), divide -18 in the numerator by 6 in the denominator.

(-18)/6 = (6 (-3))/6 = -3:

(-36-3 (-3))/14

Hint: | In (-36 (-3) (-3))/14, the numbers -36 in the numerator and 14 in the denominator have gcd greater than one.

The gcd of -36 and 14 is 2, so (-36 (-3) (-3))/14 = ((2 (-18)) (-3) (-3))/(2×7) = 2/2×(-18 (-3) (-3))/7 = (-18 (-3) (-3))/7:

(-18 (-3) (-3))/7

Hint: | Multiply -18 and -3 together.

-18 (-3) = 54:

(54 (-3))/7

Hint: | Multiply 54 and -3 together.

54 (-3) = -162:

Answer: (-162)/7

Find m<1 and m<2. Justify your answer.

Answers

Answer:

M<1 80 by the corresponding angles postulate

Step-by-step explanation:

Given that ∠A≅∠B, Gavin conjectured that ∠A and ∠B are complementary angles.

Which statement is a counterexample to Gavin 's conjecture?


m∠A=10° and m∠B=15°

m∠A=45° and m∠B=45°

m∠A=30° and m∠B=60°

m∠A=25° and m∠B=25°

Answers

45 and 45 because they are equal and add up to 90 degrees

Draw a line representing the "rise" and a line representing the "run" of the line. State
the slope of the line in simplest form.

Answers

Slope = rise/run
Slope= -8/16
Slope = -1/2

Raju’s father’s age is 5 years more than three times Raju’s age. Find Raju’s age,

if his father is 44 years old. ( 13 years)
please help​

Answers

Answer:

Step-by-step explanation:

In order to find the answer, let's work backwards to find the original. We have to do the opposite to get to the Raju's age. We will start with his fathers age. (44) Then we will subtract five from it so that it will be divisible by three.

44 - 5 = 39

Then we just have to divide by 3.

44/3 = 13

His age is 13 years old.

(2x + 35)=(5x-22) what’s x

Answers

Answer:

x=19

Step-by-step explanation:

Hi hope your having a good day please answer this

In a scale model of a ferris wheel, the height is 8 inches. If the actual height of the wheel is 96 feet, what is the scale of the model?

A. 1 in = 12.5 ft

B. 1 in = 12 ft

C. 1 in = 16 ft

D. 1 in = 11 ft

Answers

Answer:

12 simple division

Step-by-step explanation:

Answer: A

Step-by-step explanation:

please help
thank you very much

Answers

Answer:

x. a.

y. b

z. c.

Step-by-step explanation:

So from the middle column, we know that each row or colum must be -12 because 1 - 8 - 5. x + 1 - 12 should be = - 12, so x -11 = 12, so x = -1

For z, - 12 + 3 + z = -12, so z = -3

For y, y - 5 + z = -12, but we know z so we can plug in -3:

y - 5 - 3 = - 12

y - 8 = -12

so y must be -4

5/8x + 1/5x =66 what does X equal?

Answers

Convert the fractions so they have the same denominator of 40. This will make the equation 25/40x + 8/40x =66.
Add the two numbers to get 34/40x =66
Divide 66 by 34/40 to get x= 77.65 or 77 11/17

Answer:

x = 80

Step-by-step explanation:

Find a common denominator for 5/8x and 1/5x

25/40x + 8/40x = 66

Add 25/40x and 8/40x together.

33/40x

33/40x = 66

Divide both sides by 33/40

x = 80

Hope I helped :)

Please consider Brainliest :)

Write the equation of the line that passes through the points (-3,9) and (3, -1).
Put your answer in fully reduced point-slope form, unless it is a vertical or horizontal
line.

Answers

the answer is y + 1 = -(5/3)x + 5

Somebody please help!!

Answers

Answer:

-12

Step-by-step explanation:

Substitute x for 3

6(3-5)

Simplify in the parenthesis

6(-2)

multiply

-12

PLEASE HELP ME ASAP

Answers

Answer:

A=126

B=54

C=126

D=54

E=126

F=54

G=126

Step-by-step explanation:

please help me solve this problem

Answers

Answer: x = 15
Explanation: To solve for x, you need to put the two given expressions side by side. (2x-5=x+10). Then you will solve for x using inverse operations. if you need more help or want me to explain further please feel free to message me :)
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