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2 years ago

12

Jeff has 30 problems to do for math homework, and he fhinshed 60% of them before play practice. How many problems did he finish

before play practice?

1 answer:

wlad13 [49]2 years ago

3 0

To find the percentage you need to multiply 60*30 and then divide by 100 or just multiply 0.6*30

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Find the area of the figure.

givi [52]

these are just two semi-circles, one with a diameter of 22 and the other with a diameter of 30 - 22, or 8, and therefore their radius are 11 and 4 respectively.

$\bf \textit{area of a semi-circle}\\\\ A=\cfrac{\pi r^2}{2}~~,~~ \stackrel{r=11}{A=\cfrac{\pi 11^2}{2}}\implies A=\cfrac{121\pi }{2}~~,~~ \stackrel{r=4}{A=\cfrac{\pi 4^2}{2}}\implies A=8\pi \\\\ -------------------------------\\\\ \stackrel{\textit{total area of the figure}}{\cfrac{121\pi }{2}+8\pi }\implies \cfrac{121\pi +16\pi }{2}\implies \cfrac{137\pi }{2}$

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2 years ago

A pentagonal prism has dimensions that are four times the dimensions of a similar pentagonal prism. So its volume is (8, 16, 64,

enyata [817]

Scale factor for volume = A^3:B^3

(1:4)^3 = 1:64. The volume is 64x bigger.

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3 years ago

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Help!!!!<br>Somebody help me solve these questions please

kykrilka [37]

Step-by-step explanation:

Area of a trapezium = SOPS/2 × ph

Sops is the sum of 4+10 = <u>1</u><u>4</u>

14/2 is 7. 7×4 = <u>2</u><u>8</u>

<u>A</u><u> </u><u>=</u><u> </u><u>2</u><u>8</u><u>c</u><u>m</u><u>²</u>

Area = L×W

10×6= 60cm²

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3 years ago

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Convert into kilometers.<br> 452.159 meters.<br> Round to the nearest thousandth.

victus00 [196]

Answer:

452km

Step-by-step explanation:

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3 years ago

Keona pours 128 ounces of water into a jar 3 times to fill it.How many pints of water does it take to fill the jar?

Arturiano [62]

Answer:

42.66666667

Step-by-step explanation:

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3 years ago

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