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scoray [572]
3 years ago
5

Margie calculated that she would spend $175 on school supplies this year. She actually spent $97.50 on school supplies. What is

Margie’s percent of error?
77.3%
79.5%
44.2%
4.4%
(IF Someone can explain why that would be gr8)
Mathematics
2 answers:
Anna007 [38]3 years ago
8 0
Error=100 calculated/actual

error=100 (175-97.5) / 97.5

error=100 (77.5) / 97.5

error=7750 / 97.5

error=77500 / 975

error=3100 / 39

error=79.5% <-- Estimated
Juliette [100K]3 years ago
6 0

Yeah I agree with him I STG I tried to divide first, and then I came to Brainly to make sure. In other words, if there is another question like this, divide the first number in the problem (in this case 175) by the second number in the problem (in this case 97.50) and it did say "1.7948)". Ignore the "1." and just focus on the four numbers after that. So 79 is an answer. Then focus on the two number after (in this case the two numbers after 79) which is 48 in this case. Round this number to the nearest tenth, and there is your answer.

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Write an equation for the line that passes through (2, -2) and (4, -1)​
Dahasolnce [82]

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Step-by-step explanation:

Slope-intercept form:y=mx+b

m=y2-y1/x2-x1

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4 years ago
PLEASEEEE HELP ASAP , due today
Levart [38]

Answer:

circumference=>2πr

circumference= 119.32 cm

π = 3.14

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3 0
3 years ago
What the answer plz help fast? If you get it right i will mark you brainless ❤️
romanna [79]

Answer:

You'll mark me brainless?! I shouldn't answer corectly then XD

The answer (keep in mind that i'm answering incorrectly) A, or B, or D, or E.

Do you see what I did there ;)

Step-by-step explanation:

May I have brainliest please :)

3 0
3 years ago
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The researcher trains a sample of 16 individuals in mindfulness and then collects data on how long they spend eating per day. Th
Mila [183]

Answer:

The calculated t-value is t=0.47.

Step-by-step explanation:

<em>The question is incomplete:</em>

<em>"Americans typically eat quickly and do not spend time enjoying their meal. A researcher plans to test if those trained in mindfulness will take more time to enjoy their meal (that is, they will spend more time eating than the general population). The general population spends an average of 68 minutes per day combined eating their three meals. The researcher trains a sample of 16 individuals in mindfulness and then collects data on how long they spend eating per day. The sample mean for those trained in mindfulness equals 74; the SS = 150. What is the calculated t-value? Round your answer to two decimal places."</em>

The degrees of freedom are (n-1)=(16-1)=15

The standard deviation is:

s=\sqrt{\frac{SS}{n-1}}=\sqrt{\frac{150}{16-1}}=\sqrt{10}=3.16

The t-value can be calculated as:

t=\frac{M-\mu}{\sigma/\sqrt{n}} =\frac{74-68}{3.16/\sqrt{16}} \\\\t=\frac{6}{3.16*4}=\frac{6}{12.64}= 0.47

4 0
3 years ago
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