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enyata [817]
3 years ago
11

I need help!

Mathematics
2 answers:
timama [110]3 years ago
6 0
Fractions,rats, and percents all interconnect. For ext,50%=11/2 =1:2
Anon25 [30]3 years ago
5 0

Answer:

a ration 3:4 can be written as a fraction 3/4 or a percent 75%

Step-by-step explanation:

to go from a fraction to a percent divide the numerator by the denominator and multiply by 100.

3/4 = .75

.75 X 100 = 75%

if something happens 3 out of 4 times (3:4) then it will happen in 75 of 100 instances.

100 x \frac{3}{4} = 75

or using the percentage above (in decimal form)

.75(100) = 75

These are just different methods for representing the same information.

1:4 ration is equal to \frac{1}{4} fraction is equal to 25% (or .25)

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In the pulley system shown in this figure, MQ = 30 mm, NP = 10 mm, and QP = 21 mm. Find MN.
ankoles [38]
<h2>Answer:</h2>

\boxed{\overline{MN}=37.96}

<h2>Step-by-step explanation:</h2>

For a better understanding of this problem, see the figure below. Our goal is to find \overline{MN}. Since:

\angle MRS=\angle MQP=90^{\circ} \\ \\ \overline{MQ}=\overline{MR}=30mm

and \overline{MN} is a common side both for ΔMRN and ΔMQN, then by SAS postulate, these two triangles are congruent and:

\overline{RN}=\overline{QN}

By Pythagorean theorem, for triangle NQP:

\overline{QN}=\sqrt{\overline{NP}^2+\overline{QP}^2} \\ \\ \overline{QN}=\sqrt{10^2+21^2} \\ \\ \overline{QN}=\sqrt{541}

Applying Pythagorean theorem again, but for triangle MQN:

\overline{MN}=\sqrt{\overline{MQ}^2+\overline{QN}^2} \\ \\ \overline{MN}=\sqrt{30^2+(\sqrt{541})^2} \\ \\ \boxed{\overline{MN}=37.96}

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What is the area of a triangle that has a height of 6 feet and a base length of 7 feet? (5 points)
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Read 2 more answers
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