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3 years ago

Kym got 3 problems wrong on a test that had 25 total questions wa percent did sh get righ

Mathematics

2 answers:

Leto [7]3 years ago

7 0

88%

25-3=22

4x22/25x4

88/100

88 out of 100 equals 88%

scale back down by ÷4 on both sides to check answer

photoshop1234 [79]3 years ago

5 0

Answer:

do 25×3%

Step-by-step explanation:

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Is <img src="https://tex.z-dn.net/?f=2%5E%7B-3%7D" id="TexFormula1" title="2^{-3}" alt="2^{-3}" align="absmiddle" class="latex-f

TEA [102]

Answer:

Rational

Step-by-step explanation:

$2^{-3}$ simplifies to $\frac{1}{8}$ .

Therefore, it is rational.

$2^{-3}\\\\\text {Apply negative exponent rule: } a^{-n} = \frac{1}{a^n} \\2^{-3}= \frac{1}{2^3}\\ \rightarrow 2^3 = 2*2*2=8\\\boxed{2^{-3}=\frac{1}{8}}$

<em>Brainliest Appreciated. </em>

5 0

3 years ago

Pls help i will mark you brainliest

Korolek [52]

2 and 1/4 miles is how far Mary walks around the track. This is because she walks for 15 minutes before Jerry gets there, which is 0.75 miles at 3mph. Then Jerry goes for 2 miles, which is half an hour. Half an hour is double 15 minutes, so it's double 0.75 miles. So 0.75 plus 1.5 = 2.25 Mark me brainliest :3

7 0

3 years ago

7.1 divided by 312.755

RUDIKE [14]

answer 0.0227014756

Step-by-step explanation:

or if you meant 312.775/7.1 it's 44.0528169

6 0

3 years ago

Hey um this is confusing

aleksandr82 [10.1K]

Answer:

15.7

Step-by-step explanation:

Lets take a = 50.

Area of Sector =

$\frac{a}{360} \pi {r}^{2} \\ = \frac{50}{360} \pi {6}^{2} \\ = \frac{50}{360} (3.14)(36) \\ = 15.7units {}^{2}$

4 0

3 years ago

A study on the population of wolves is being done in a county to determine how the number of wolves has changed over time. The p

mr_godi [17]

Answer:

Step-by-step explanation:

The population of wolves is given by P(t) = 80(0.98)t.

The study has began in the year of 2000 and will end in 2020.

The difference between 2000 and 2009 is 9 years and the difference between 2009 and 2020 is 11 years.

Hence, the maximum value of t is 11.

The domain is $0 \leq t \leq 11$ .

The population will be 80, that is P(t) = 80.

Hence, 0.98t = 1, or, t = $\frac{1}{0.98} = \frac{100}{98} = \frac{50}{49}$ ≅1.

In (2009 + 1) = 2010, the population of wolves will be 80.

3 0

3 years ago