All categories

3 years ago

H(x)=x^2-3x+7 when x= -3 A.7 B.25 C.-2 D.16

Mathematics

2 answers:

kirill [66]3 years ago

4 0

Answer:

Step-by-step explanation:

2-3x7x-3

2.5

2.5 --3

this be good

ludmilkaskok [199]3 years ago

4 0

Answer:

Step-by-step explanation:

H(x)=x^2-3x+7

=(-3)^2-3*(-3)+7

=9-9+7

You might be interested in

Enter your answer in the box. Be sure to enter your answer as an ordered pair (x,y). Meaning, put your answer in parenthesis.

vitfil [10]

Answer:

The solution of the system of equation are (10,15).

Step-by-step explanation:

The given two linear two variable equations are

- x - 2y = - 40 ........ (1) and

x + 4y = 70 .......... (2)

Now,adding thoes two equations (1) and (2) we get,

- 2y + 4y = - 40 + 70

⇒ 2y = 30

⇒ y = 15.

Now, putting y = 15 in the equation (2), we get,

x = 70 - 4y = 70 - 4(15) = 10

Therefore, the solution of the system of equation are (10,15). (Answer)

3 0

4 years ago

2 − 36 = 0 Solve by square roots

Paraphin [41]

Answer:

no solution

Step-by-step explanation:

7 0

3 years ago

I really need help with this thanks a lot

aleksandrvk [35]

Answer:

Graph B

Step-by-step explanation:

According to data in the table we see pairs of points:

(3, 75), (5, 125)

This gives us the rate of change:

(125 - 75)/(5 - 3) = 50/2 = 25

The y - intercept is zero:

75 = 3*25 + b
75 = 75 + b
b = 0

The line is:

y = 3x

This is the line on the graph B

Note. Its not clear what is needed regarding the table on the bottom

8 0

2 years ago

A safety regulation states that the maximum angle of elevation for a rescue ladder is 72°. A fire department's longest ladder is

Julli [10]

Answer:

The maximum safe rescue height is 104.6 feet above the height of the ground.

Step-by-step explanation:

Consider a triangle ABC where C is the point where the rescue ladder is standing and AB be the building and Ladder making an angle of 72° as shown.

We have to find the height of the building.

Let x be the height of building

Using Trigonometric ratio,

$\sin C=\frac{\text{Perpendicular}}{\text{Hypotenuse}}$

$\sin 72^{\circ}=\frac{AB}{BC}$

$\sin 72^{\circ}=\frac{x}{110}$

$x=110 \times \sin 72^{\circ}$

$x=104.6$

So, the maximum safe rescue height is 104.6 feet above the height of

the ground.

5 0

4 years ago

Read 2 more answers

Please help!!!!!!!!!!!!!

devlian [24]

Answer:

Step-by-step explanation:

C is the correct answer because the other 3 points are not correct when you put the numbers into the equation.

y = 16 + 0.5x

20 = 16 + 0.5(8)

20 = 20

5 0

3 years ago

Read 2 more answers