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Sveta_85 [38]
3 years ago
9

Find the length of KE. A. 30 B. 28 C. 15 D. 3

Mathematics
2 answers:
Vedmedyk [2.9K]3 years ago
8 0

Answer:

B

Step-by-step explanation:

2 angles and one side of one ΔBCE≡ 2 angles and one side of ΔKCE.

∴BE=KE

7p+7=37-3p

7p+3p=37-7

10p=30

p=3

KE=37-3p=37-3×3=37-9=28

Alenkasestr [34]3 years ago
5 0

Answer:

28

Step-by-step explanation:

What value of p makes both sides equal the same? P = 3

37 - 9 = 28

21 + 7 = 28

So line KE and BE both equal 28

Hope this helps, and have a good day :)!

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How much water should we add to 20 kg of seawater to change its concentration from 3% to 2%?
zhannawk [14.2K]

Answer:

10 kg

Step-by-step explanation:

In 3% concentration of 20 kg of seawater, there will be \frac{20 \times 3}{100} = 0.6 kg of salt.

So, if it is a 2% solution of seawater,

Then 2 kg salt will be there in 100 kg solution.

So, 0.6 kg salt will be there in \frac{100 \times 0.6}{2}= 30 kg of solution.

So, to make a solution from 3% to 2% we have to add (30 - 20) = 10 kg of water with a 20 kg solution. (Answer)

6 0
3 years ago
Given MN is an angle bisector of ∠JMK Prove: M∠JMN = 1/2 M∠JMK <br><br> FOR BRAINLIEST
blagie [28]

An angle bisector is a line passing through the vertex of the angle that cuts the angle into two equal smaller angles.

If MN is angle bisector, then

m∠JMN=m∠NMK.

The two smaller angles are adjacent angles, then

m∠JMK=m∠JMN+m∠NMK=2m∠JMN.

Divide this equality by 2:

m\angle JMN=\dfrac{1}{2}m\angle JMK.

3 0
3 years ago
Hannah Decided to make a cake. it took her 45 minutes. If she finished the cake at 4:15 PM, when did she start cooking?
DedPeter [7]
3:30 PM is the answer
5 0
3 years ago
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The table shows how many males and females attended two different movies. How would you find the joint relative frequency of bei
kirza4 [7]

Answer:

B. Divide 124 by 229.

Step-by-step explanation:

Given the table

\begin{array}{cccc}&\text{Action}&\text{Drama}&\text{Total}\\ \\\text{Male}&105&124&229\\ \\\text{Female}&99&151&250\\ \\\text{Total}&204&275&479\end{array}

The <u>joint relative frequency</u> is the ratio of the frequency in a particular category and the total number of data values.

The total number of males =229

The number of males that like drama =124

So, to find the joint relative frequency of being male and attending a drama movie, you should divide 124 by 229.

8 0
3 years ago
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An angle cannot be the complement of one angle and the supplement of another angle at the same time. is this true or false?
soldi70 [24.7K]

An angle cannot be the complement of one angle and the supplement of another angle at the same time. Then the given statement is false.

<h3>What is an angle?</h3>

The angle is the distance between the intersecting lines or surfaces. The angle is also expressed in degrees. The angle is 360 degrees for one complete spin.

Supplementary angle - Two angles are said to be supplementary angles if their sum is 180 degrees.

Complementary angle - Two angles are said to be complementary angles if their sum is 90 degrees.

An angle cannot be the complement of one angle and the supplement of another angle at the same time.

Then the given statement is false.

More about the angled link is given below.

brainly.com/question/15767203

#SPJ1

8 0
2 years ago
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