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guapka [62]
3 years ago
10

Find the value of x and the measure of the angle labeled 3x.

Mathematics
2 answers:
olga2289 [7]3 years ago
8 0

Answer:

the answer is D, x= 10;angle measure is 30°

igor_vitrenko [27]3 years ago
4 0

Answer:

D

Step-by-step explanation:

3x and 30 are vertically opposite angles and congruent, then

3x = 30 ( divide both sides by 3 )

x = 10 , thus

3x = 3 × 10 = 30°

x = 10 ; angle measure is 30° → D

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Tamara rewrote the expression 0.2(4+1.4y - 2.1). Her steps are shown.
grin007 [14]

Answer:

Her first mistake was in Step 2. She added 0.2 to each term instead of multiplying by 0.2.

Step-by-step explanation:

CORRECT WAY:

0.2(4+1.4y - 2.1)

0.8 + 0.28y - 0.42

0.8 - 0.42 + 0.28y

0.38 + 0.28y

WHAT TAMARA DID:

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How she got 4.2: 0.2 + 4 = 4.2

How she got 1.6y: 0.2 + 1.4y = 1.6y

How she got -1.9: 0.2 + -2.1 = -1.9

WHAT SHE DID HERE IS WRONG. REMEMBER WHEN IT IS __( ______) IT MEANS THAT YOU NEED TO MULTIPLE NUMBER OUTSIDE THE PARATNESS TO EVERY NUMBER THAT IS INSIDE THE PARATNESS.

4 0
2 years ago
The area of the top face of a cube is 9 square meters. what is the volume of the cube
Luba_88 [7]

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7 0
3 years ago
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Determine whether the figure is a parallelogram.
Nesterboy [21]

Answer:

The figure is a parralellogram

Step-by-step explanation:

it has 4 sides and one set is parallel

8 0
3 years ago
7. If every short side is 1.5 inches and every long side is 3 inches, what is the perimeter?
hjlf
The answer 2 your question is 24in
6 0
3 years ago
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I’ll give brainliest to the person who answers this right. Please help!!
Charra [1.4K]

Answer:

3.43

Step-by-step explanation:

To do this you would first find the area of the square which is 16. Then you would find the area of the 2 semicircle or just on whole circle. We are just going to use the formula for a whole circle since there are 2 semicircles. The formula to find a circle is pi times r^2 so we are going to put that into a calculator so we would do pi times 2 (radius of circle)^2 which is 12.57 and we would subtract 16 by 12.57 which is 3.43

5 0
2 years ago
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