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GrogVix [38]
3 years ago
7

Education

Mathematics
1 answer:
dedylja [7]3 years ago
6 0

Answer:

252 ft2 (squared)

Step-by-step explanation:

area= a x b

area= 12 x 21

area= 252 ft2 (squared)

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If the area of a right triangle is 9/16 sq. ft. and the height is 3/4 ft, write an equation that relates the area to the base,b,
Rudik [331]

Answer:

Base = 1.5 ft

Step-by-step explanation:

Area = ½ × base × height

9/16 = ½ × base × 3/4

9/16 = 3/8 × base

base = 9/16 × 8/3

base = 3/2

base = 1½ ft

5 0
3 years ago
Suppose that you are interested in determining the average height of a person in a large city. You begin by collecting the heigh
monitta

The standard error of the estimate of average height in the city is 0.25.

Given average height 64 inches, sample mean and sample standard deviation of 4 inches.

We have to determine the standard error of the estimate of the average height in the city.

Standard error is the error which is predicted before research to happen in research. It is calculated by dividing the standard deviation of the sample by the square root of the sample size.

n=256

μ=mean

s = sample standard deviation

Standard error=s/\sqrt{n}

=4/\sqrt{256}

=4/16

=0.25

Hence the standard error of the estimate of the average height is 0.25.

Learn more about standard error at brainly.com/question/1191244

#SPJ4

5 0
2 years ago
Customers of a phone company can choose between two service plans for long distance calls. The first plan has a 26
Wittaler [7]
26+0.08x=8+0.13x
26-8=0.13x-0.08x
18=0.05x
x=18/0.05=360 min
6 0
3 years ago
Read 2 more answers
Please help me!!!!!!!!!!!!!!!!!!!!!!!!
romanna [79]

Answer:

a. 81.9

b. 144.7

c. 110.2

d. 48

Step-by-step explanation:

a. 120/109.2 = 90/x

x = 81.9

b. 45.6/120 = 55/x

x = 144.7

c. 304.8/96 = 350/x

x = 110.2

d. 109.2/45.6 = 115/x

x = 48

5 0
3 years ago
kala is a software salesmen. her salary is $2400, and she makes an additional $80 for every copy of english is fun she sells. le
andrew11 [14]

P = 2400 + 80N

Total pay if 24 copies:

P = 2400 + 80N

N equals 24

P = 2400 + 80(24)

Total pay = $4,320

6 0
3 years ago
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