3 years ago

If f(x) = 2x + 1, then f(-2) = _______

Mathematics

1 answer:

Ira Lisetskai [31]3 years ago

3 0

f(x) = 2x + 1

f(-2) = --------

f(-2) = 8x + 5

You might be interested in

2+2Divided by 10,000×4000-10<br> Divided by 10,000×4000-10

marshall27 [118]

Answer:

-11.2

Step-by-step explanation:

6 0

3 years ago

A 100-foot rope from the top of a tree house to the ground forms a 45∘ angle of elevation from the ground. How high is the top o

DochEvi [55]

Answer:

The height of tree house is 70.71 feet

Step-by-step explanation:

We are given that A 100-foot rope from the top of a tree house to the ground forms a 45∘ angle of elevation from the ground

Refer the attached figure

Length of rope AC = Hypotenuse =100 feet

The top of a tree house to the ground forms a 45∘ angle of elevation from the ground = $\angle ACB = 45^{\circ}$

We are supposed to find the height of tree house i.e.AB = Perpendicular

So, Using trigonometric ratio

$Sin \theta = \frac{perpendicular}{Hypotenuse}\\Sin 45= \frac{AB}{AC}\\\frac{1}{\sqrt{2}}=\frac{AB}{100}\\100 \times \frac{1}{\sqrt{2}}=AB\\70.71=AB$

Hence The height of tree house is 70.71 feet

8 0

3 years ago

Mike has $72 and he needs to buy some apples. Which of these equations would represent mike's situation of the apples cost $0.60

Alexxandr [17]

Answer:120 apples

Step-by-step explanation:

72/.60=120

8 0

3 years ago

A skydiver falls 60 feet in five seconds. How far does the skydiver fall per<br> Second

astra-53 [7]

Answer:

12 feet

Step-by-step explanation:

60/6 = 12

6 0

3 years ago

Read 2 more answers

Rewrite the following without an exponent:<br><br> Two to the negative fourth power.

Westkost [7]

I believe it's -4x-4

3 0

3 years ago

Read 2 more answers