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Arada [10]
3 years ago
9

Cheryl spends 3/10 of her savings on a book and 2/5 of it on a pen. What fraction of her savings does Cheryl spend.

Mathematics
2 answers:
GenaCL600 [577]3 years ago
8 0
Cheryl spends 7/10 of her savings 
Musya8 [376]3 years ago
5 0
7/10 is the answer k
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Simplify 3(2a - y) - 4(2y - a).
uranmaximum [27]
The answer would be 10a-11y
3 0
3 years ago
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Please help me answer this !! <br> Explain your answer !!! <br><br> I will give brainlst
scZoUnD [109]
<h3>Answer: B) 30</h3>

Any amount of rotation will not change the angle between the two spokes. This is because each piece of the wheel moves in unison as the rotation is applied. Nothing changes about the wheel. Imagine instead of rotating the wheel, we instead rotated the camera that is capturing the wheel (or the person looking at the wheel rotates their head). This is a good way to see how the wheel itself isn't changing at all, but instead rather just the look of it is changing.

5 0
2 years ago
A researcher plans to conduct a significance test at the 0.01 significance level. She designs her study to have a power of 0.90
Rasek [7]

Answer: 0.10

Step-by-step explanation: The type 2 error is committed when the alternative hypothesis is rejected when it should have been accepted causing the researcher to accept the null hypothesis which is false.

Power is the probability of avoiding a type 2 error. That is ;

Power = 1 - P(type 2 error)

Given that power = 0.90 ; P(type 2 error) = probability of committing a type 2 error.

P(type 2 error)' = 1 - P(type 2 error) = Probability of not committing or avoiding a type 2 error

0.90 = 1 - P(type 2 error)

P(type 2 error) = 1 - 0.90

P(type 2 error) = 0.10

6 0
3 years ago
–3m − 6 = –4m<br> find m please
RideAnS [48]

Answer:

m=6

Step-by-step explanation:

-3m+4m=6

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3 0
3 years ago
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PLZ HELP! Need this ASAP! Thx so much!<br><br> Find m∠PMK<br><br> Plz show ur work!
max2010maxim [7]
In ∆MKP and ∆MNP

MK = MN

PK = NP

MP = MP

SO ∆MKP AND ∆MNP ARE CONGRUENT.

SO m<PMN = m<PMK


m<NMK = 50

=> m<PMN + m<PMK = 50

=> 2 m<PMK = 50

=> m<PMK = 50/2 = 25°
3 0
3 years ago
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