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TiliK225 [7]
4 years ago
7

Help for another brainliest

Mathematics
1 answer:
Oksana_A [137]4 years ago
3 0

Answer:

Y is equal to 9

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What is the exam score for an exam whose z-score is 1.25?
mojhsa [17]

Answer:

85

Step-by-step explanation:

A z-score of 1.25 means that the actual exam score is 1.25 standard deviations above the mean, and therefore the exam score we are looking for is: mean + 1.25 * SD = 75 + 1.25 * 8 = 85

4 0
3 years ago
PLEASE HELP I NEED HELP ITS MULTIPLYING FRIACTIONS AND MIXED FRACTIONS
salantis [7]
Hello! the answers are (going across) 72/90 , 6/21 , 11/24 , 100/4 , 121/12 , 175/48
if u need me to explain how i got this, feel free to message me ! have a nice day:)<3
7 0
3 years ago
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4/5 cm * 3/8 cm<br>please answer fast ​
madreJ [45]

Answer:

0.3 cm or 3/10 cm or 30% cm

Step-by-step explanation:

3 0
3 years ago
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**BRAINLIEST IF ANSWERED***
goblinko [34]

Answer:

(D)7 in.

Step-by-step explanation:

A regular hexagon can be divided into six equilateral triangles.

Therefore:

b=\dfrac{c}{2}

Applying Pythagoras Theorem

c^2=12^2+b^2\\c^2=12^2+(\frac{c}{2})^2\\c^2-(\frac{c}{2})^2=12^2\\c^2-\dfrac{c^2}{4}=144\\\dfrac{4c^2-c^2}{4}=144\\\dfrac{3c^2}{4}=144\\$Cross multiply\\3c^2=144 \times 4\\3c^2=576\\$Divide both sides by 3\\c^2=192\\$Therefore:\\c=\sqrt{192}\\c=8\sqrt{3}$ in.

Recall that b=c/2

Therefore:

b=4\sqrt{3} \approx 7$ in.

The value of b is 7 inches.

6 0
3 years ago
Will give brainliest :D
klemol [59]

Answer:

D.

Step-by-step explanation:

Pretty sure

6 0
3 years ago
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