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umka21 [38]
2 years ago
15

HELP PLEASE!! Alita is 2 times as old as Jiro. Jiro is 4 years younger than Erik. Erik is 1/3 as old as dawn. The sum of all the

ir ages is 72 What equation could you write to represent this situtation????
Mathematics
2 answers:
Aleonysh [2.5K]2 years ago
5 0

Answer:

a cyclist covers a distance of 15km in 2hours calculate his speeda cyclist covers a distance of 15km in 2hours calculate his speeda cyclist covers a distance of 15km in 2hours calculate his speed

slamgirl [31]2 years ago
5 0

Step-by-step explanation:

72= (e= 1/3d ) + (j= e-4) + (a= 2j)

or

1/3d - 4 × 2 =72

let d = dawn

let e = erik

let j = jiro

let a = alita

remember that a number next to a variable means multiplication.

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Joel earns $1,700 per month. If he spends $425 on rent each month, what percent of his income does he spend on rent?
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The answer is 25%
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4 0
3 years ago
Criminal investigators use biometric matching for fingerprint recognition, facial recognition, and iris recognition. When matchi
Art [367]

Answer:

It is not a Type I error neither a Type II error.

Step-by-step explanation:

Let \mu be the true mean match score. The null hypothesis is H_{0}: \mu = 80 and the alternative hypothesis is H_{1}: \mu > 80 (upper-tail alternative). When the test shows that the mean match score is more than 80 when actually is equal to 80 a Type I error is made. On the other hand, when the test shows that the mean match score is equal to 80 when actually is more than 80 a type II error is made. Therefore, when the test shows that the mean match score is more than 80 when the person does not actually have a fingerprint match, does not correspond to a Type I error neither to a Type II error.

6 0
3 years ago
A +-21 = -38<br><br>help me please​
ivann1987 [24]

Answer:

A= -17

Step-by-step explanation:

A +-21 = -38

    +21     +21

-38+21= -17

A= -17

5 0
2 years ago
Read 2 more answers
Find the approximate circumference of a circle with a diameter of 100 yards.
elixir [45]

Answer:

D. 314 yds

Step-by-step explanation:

Given:

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Required;

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