2 years ago

Which of the following statements are true for using proportions to solve for missing measures? Select three options.

Mathematics

2 answers:

Dimas [21]2 years ago

5 0

Answer:

b, c, d

Step-by-step explanation:

I just took the test

Colt1911 [192]2 years ago

5 0

Answer: C D B

Step-by-step explanation:

JUST TOOK THE TEST ON ENDEGENUITYYYYY

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Your dog is 8 years younger than your friend. In 2 years, your friend will be three times as old as your dog. How old is your do

ra1l [238]

Answer:

Dog is 2 years old

Step-by-step explanation:

Let dog's age = d

Let friend's age = f

Your dog is 8 years younger than your friend:

d +8 = f

In 2 years, your friend will be three times as old as your dog:

3(d+2) = (f+2)

3d+6 = f+2

3d = f - 4

(sub in f=d+8 from above)

3d = f - 4

3d = d+8 - 4

2d = 4

d = 2

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2 years ago

On a recent quiz, the class mean was 72 with a standard deviation of 4.2. Calculate the z-score (to 2 decimal places) for a pers

barxatty [35]

Answer:

The Z score of the person is -3.09.

Step-by-step explanation:

The standard normal deviate (Z) for a normal distribution is given by

$Z=\frac{X-\bar{X}}{\sigma }$

where,

X = the value of observation

$\bar{X}$ is mean of the observations and

σ = standard deviation of the score

Applying values we get

$Z=\frac{59-72}{4.2}=-3.09$

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3 years ago

What is 43.043 in expanded form

nordsb [41]

40+3+.04+.003

expanded form is showing what you have to add together

3 0

3 years ago

A photographer buys a new camera for $1350. Every year the camera decreases in value by 10%.

bagirrra123 [75]

Answer:

A(t)=1350(0.9)^t

i hope this helps :)

4 0

2 years ago

last year, Nicole biked n miles. This year, she biked 524 miles. Using n, write an expression for the total number of miles she

Fittoniya [83]

Answer:

n+524

Step-by-step explanation:

you add both years worth of biking together!

7 0

2 years ago