3 years ago

Evaluate 2 + x − 2 ∙ 8 for x = 9. 1. −5 2. 58 3. 72 4. −68

Mathematics

1 answer:

irga5000 [103]3 years ago

5 0

Answer:

The answer is -5

Step-by-step explanation:

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A lifeguard is in a look out chair and sees a person in distress. The eye level of the lifeguard is 15 feet above the ground. Th

faltersainse [42]

Answer:

Horizontal distance between lifeguard and the person is 22 feet.

Step-by-step explanation:

Given: A lifeguard sees a person in distress.The eye level of the lifeguard is 15 feet above the ground. Angle of depression is 34°.

To find: Horizontal distance between lifeguard and the person.

Solution : If we draw a triangle then tan∅ = $\frac{height}{base}$

Here base is the horizontal distance.

Now we put the values in the formula.

tan 34° = $\frac{15}{base}$

Or Base = $\frac{15}{tan34}$

= $\frac{15}{0.675} = 22.22 feet$

So the answer is 22 feet.

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3 years ago

Monica made a drawing of her patio using the scale 1 inch equals 4 feet. The length of the patio in her drawing was 11 inches. W

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1 inch = 4 feet

11 inches = 44 feet (multiply both sides by 11)

<h3>Answer: 44 feet</h3>

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3 years ago

What is the tenth term in the sequence 9, 13, 17, 21, 25…?

Zinaida [17]

Answer:

Step-by-step explanation:

9, 13, 17, 21, 25

We are adding 4 each time

9+4 = 13

13+4 =17

17+4 = 21

The common difference =4

a1 = 9

The formula is

an = a1+d(n-1) where n is the term number

an = 9+4(n-1)

We want the 10th term

a10 = 9+4(10-1)

= 9+4(9)

= 9+36

= 45

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3 years ago

nasty-shy [4]

Answer:

Step-by-step explanation:

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3 years ago

Plz help!!! I’ll give 10 points to the first person to give me a correct answer...I need to get my grade up before the end of th

Lilit [14]

Answer:

A= 30

B= 60

C= 90

Step-by-step explanation:

A is already shown.

B has a right angle making it 90 degrees.

A triangle is 180 degrees 30+90= 120

180-120=60

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3 years ago