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2 years ago

Evaluate |x-13| when x=5. A.8 B.-8 C.21 D.-21

1 answer:

8 0

5 - 13 = -8

But remember it is in the ||. This means the answer will, no matter what, be positive.

So the answer is |-8|, or +8.

A is the answer.

Now for an explanation of why the || makes it positive.

They are know as "absolute values." Absolute values will always, no matter what, be a positive number. These can be very tricky to deal with, but just remember to answer what is in the || first, and THEN do the absolute value. Remember that on a number line, the middle is always 0. And because -8 and 8 are both 8 spaces away from 0, the absolute value will be 8. This is why it is positive. You cannot be negative spaces away from something.

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Suppose you send about 12 text messages a day, and your older sister sends more text messages than you do. Together, you send a

frozen [14]

Answer: so your sister sends 14 messages a day

Step-by-step explanation: you send about twelve texts a day and as a total you both send 26 so lets let your sister be x and you are 12

26- 12=x

26-12= 14

I hope this was helpful!

3 0

2 years ago

the captain of a boat knows that the lighthouse on the coast is 200 feet tall. he measures the angle of elevation to the top of

krek1111 [17]

Answer:

The boat is 5727.25ft far from the coast

Step-by-step explanation:

Refer the figure given.

We need to find how far is the boat from the coast = AB

Angle of elevation = 2°

The lighthouse on the coast is 200 feet tall, AC = 200 ft

We have

$tan2=\frac{AC}{AB}=\frac{200}{AB}\\\\AB=\frac{200}{tan2}=5727.25ft$

The boat is 5727.25ft far from the coast

7 0

2 years ago

Quesuon Z: 2 PES

cricket20 [7]

Answer:

124 ft2

Step-by-step explanation:

The yard is a 12ft square so the length and width would both be 12ft. You multiply the length and width of the yard to get the area of the yard so 12x12=144. You have the length and width of the flower bed so 5x4=20. Once you have the area of both you can subtract the area the flower bed takes up of the lawn. 144-20=124 ft2.

5 0

2 years ago

13 more than 4 times a number is negative 91 how would i find the number?

alekssr [168]

<span>13 more than 4 times a number is negative 91

</span>Convert to numbers:

13 more than 4: 4+13

times a number: (x)

is negative 91: = -91

Put it together:

4x+13=-91

x = -26

5 0

3 years ago

Read 2 more answers

The force f acting on a charged object varies inversely to the square of its distance r from another charged object. When 2 obje

o-na [289]

Answer: The force, F, acting on a charged object varies inversely to the square of its distance, r, from another charged object. When the two objects are 0.64 meter apart, the force acting on them is 8.2 Newtons

Step-by-step explanation: )

7 0

2 years ago