Evaluate the function.

f(x)=-4x²+19

Find f(−7)

[tex]\text {Answer:}[/tex]

[tex]\huge\boxed{\sf 5}[/tex]

[tex]\text {Step-by-step~explanation:}[/tex]

[tex]\bold {4.5~ / ~90 \times 100}[/tex]

[tex]\bold {(4.5 \times 100) ~/~90}[/tex]

[tex]\bold {450~ /~ 90 }[/tex]

[tex]\bold {= 5 }[/tex]

Answer:

X=3, y=-6

Step-by-step explanation:

7x+4y=-3 equation 1

-7x-5y=9 equation 2

     -y=6. Add above two equations    

      Y=-6

solve for x by inputting y value into either equation.

7x+4(-6)=-3

7x-24=-3

7x=21

x=3

check answer by inputting x and y values into either equation

-7x-5y=9

-7(3)-5(-6)=9

–21+30=9

9=9

Answer:

Step-by-step explanation:x<-5/2

Answer:

81%

Step-by-step explanation:

2835 / 3500

0.81 out of 1

81%

Answer:

the answer is 1000

Answer:

hardy har har

Step-by-step explanation:

Answer:

lol yes it is

Step-by-step explanation:

btw thanks for the free points :)

Answer:

hahahahahaha uh

Step-by-step explanation:

I think you just keep pressing spare until she lets you go i think--

Answer:

DONT SPARE

Challenge if you want a challenge Plead if you dont.

Then when your soul turns red spare and start running

Step-by-step explanation:

Answer:

10 weeks

Step-by-step explanation:

12 * 3 = $36 At this point of 3 weeks you will be out of debt.

$12 * 7 weeks = $84 At  this point you will be a dollar short, but you had a dollar left over after 3 weeks. This would put you at a total of $85.

So, it would take 3 weeks to get out of debt and 7 to get up to $85.

3 + 7 = 10

A= 10 weeks

Hope this helps! :)

Answer:

15 months

Step-by-step explanation:

35x+20=545

Subtract 20 from both side to figure out how many months he paid for....

35x+20-20=545-20

35x=525

Divide 35 on both sides....

x=15

Therefore, he has been a member for 15 months

Check:

35(15)+20=545

525+20=545

545=545

IT'S CORRECT!!!

MARK ME BRAINLEST PLS THANKS :)

Answer:

yes

Step-by-step explanation:

Answer: yes

Step-by-step explanation:

Answer:

chile I think it's A

Step-by-step explanation:

anyway, if it goes through the same point as the the first one, it becomes a solution and depending on the equation everything either to the left or right, above or below, becomes a solution as well. don't stress bruv, we all got small brain

Answer:

along the x it moved 3 and along the y it went 4

Answer:

15 feet

Step-by-step explanation:

The ladder is the hypotenuse of a right triangle, with the legs being 9 ft and 12 ft long (see the picture).

To solve for the length of the ladder, use the Pythagorean Theorem.

[tex]9^{2} +12^{2} =c^{2} \\c=\sqrt{9^{2} +12^{2}} \\c=\sqrt{81+144} \\c=\sqrt{225} \\c=15[/tex]

Answer: -8(4d-7)

Step-by-step explanation:

-32d+56=-8([tex]\frac{-32d}{-8}[/tex]+[tex]\frac{56}{-8}[/tex])=-8(4d-7)

Answer:

The slope of given line is -5/3

Step-by-step explanation:

Given equation of line is:

5x+3y = 45

In order to find the slope of the given line, we have to convert the equation in slope-intercept form first

So,

[tex]5x+3y = 45\\3y = -5x+45[/tex]

Dividing both sides by 3

[tex]\frac{3y}{3} = \frac{-5}{3}x+\frac{45}{3}\\y = -\frac{5}{3}x+15[/tex]

The slope-intercept form is given by:

[tex]y = mx+b[/tex]

Here m(co-efficient of x) is the slope of line

Comparing both equations, we get

m = -5/3

Hence,

The slope of given line is -5/3

Answer:

These are congruent, I used the method of mirroring to solve. A to L equals W  to K

Answer:

△ LAW ≅ WKL

By the Rule: ASA/SAA

Step-by-step explanation:

I hope this helps

Answer:

The answer is 105

Step-by-step explanation:

(60)(350) = k

21000 = k

(m)(200) = 21000

m = 105

Answer:

The slope is 56/13

Step-by-step explanation:

Answer:

Yes, because if you divide $2.03 by $.58 you will get 3.5. Once rounded 3.5 turns to 4

Step-by-step explanation:

Answer:

x = 8/3

Step-by-step explanation:

3x + 16 = 24

3x = 24 - 16 (subtract 16 from both sides)

3x = 8

x = 8/3 (divide both sides by 3)

Answer: x = 5, y = 2/5

Step-by-step explanation:

We have the system of equations:

6*x + 5*y = 32

2*x + 5*y = 12

To solve it, we can start by isolating one of the variables in one of the equations.

Because in both of them we have the term 5*y, i will isolate 5*y in the second equation:

5*y = 12 - 2*x

Now let's replace it in the first equation:

6*x + (12 - 2*x) = 32

Now let's solve it for x

6*x + 12 - 2*x = 32

(6*x - 2*x) = 32 - 12 = 20

4*x = 20

x = 20/4 = 5

Now we know the value of x, we can replace it in the equation:

5*y = 12 - 2*x

to find the value of y.

5*y = 12 - 2*5

5*y = 2

y = 2/5

Then the solution of the system is x = 5, y = 2/5

Answer:

Teo is 8 years old and Richard is 29 years old

Step-by-step explanation:

Let us solve the question

Assume that Teo is x years old

∵ Teo is x years old

∵ Richard is 13 years older than twice Teo's age

→ It means multiply x by 2, then add 13 to get the age of Richard

∴ Richard's age = 2x + 13

∵ Richard and Teo have a combined age of 37 years

→ Add their ages and equate the sum by 37

∴ x + 2x + 13 = 37

→ Add the like terms

∵ (x + 2x) + 13 = 37

∴ 3x + 13 = 37

→ Subtract 13 from both sides

∵ 3x + 13 - 13 = 37 - 13

∴ 3x = 24

→ Divide both sides by 3 to find x

∴ x = 8

∵ x represents Teo's age

∴ Teo is 8 years old

→ Substitute the value of x in the expression of Richard age to find his age

∵ Richard age = 2(8) + 13 = 16 + 13 = 29

∴ Richard is 29 years old

∴ Teo is 8 years old and Richard is 29 years old

Answer: Answer choice B

perimeter is the total length of a boundary of a figure.

Answer: 38°

Step-by-step explanation:

∠1 and m∠62° are congruent as this is an isosceles triangle.

∠1 = 62°

∠2 + ∠1 + m∠62° = 180° because they form a triangle

∠2 + 62 + 62 = 180

∠2 + 124 = 180

Subtract both sides by 124

∠2 = 56°

∠2 and ∠3 are linear pairs so they're supplementary.

∠3 + ∠2 = 180°

∠3 + 56 = 180

Subtract both sides by 54

∠3 = 124°

∠4 + m∠18° + ∠3 = 180° because they form a triangle

∠4 + 18 + 124 = 180

∠4 + 142 = 180

Subtract both sides by 142

∠4 = 38°

Hope this helped!

Answer:

x = 8 and y = - 1

Step-by-step explanation:

The equation of a vertical line parallel to the y- axis is

x = c

where c is the value of the x- coordinates the line passes through

The line passes through (8, - 1 ) with x- coordinate 8, then

x = 8 ← equation of vertical line

The equation of a horizontal line parallel to the x- axis is

y = c

where c is the value of the y- coordinates the line passes through

The line passes through (8, - 1 ) with y- coordinate - 1, then

y = - 1 ← equation of horizontal line

Answer:

F: 12r+y

Step-by-step explanation:

- Why not G because if you multiple 2 by 6 and you get 12 then why not multiple the 6 too.

- Why not H because how do you get 16???

- Why not J because you don't add 2 pulse 6 to make 8 when you are supposes to multiple.

Hope this helps and sorry if wrong :)

Answer:

1440

Step-by-step explanation:

You multiply 30 by 48, so when it says something like "64 inches by 17 inches" you will have to multiply. Hope i helped!