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Klio2033 [76]
3 years ago
8

I need to know this geometry answer.

Mathematics
2 answers:
Dafna11 [192]3 years ago
6 0
Why are you learning geometry in elementary??
STatiana [176]3 years ago
3 0
2x + 1.5x +20 = 90 
3.5 x = 90-20 
3.5 x = 70 
x = 70/3.5 
x = 20 
angle DAE = 2*20 = 40 
angle CAD = 1.5*20 +20 = 50
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A circle has an area of approximately 615 square millimeters. What is the diameter of the circle
noname [10]

Answer:

When using the given information, the diameter of the circle is going to be 28 mL.

Step-by-step explanation:

First, we need to know the formula for finding the area of a circle.

Area=r^2\pi

Now, we need to rearrange the formula so we can find the radius.

Radius=\sqrt{\frac{A}{\pi} }

Next, we plug in the given area into the equation.

Radius=\sqrt{\frac{615}{\pi}}

Radius=\sqrt{196}

Radius=14

Now that we have the radius, we can find the diameter. The radius is half the length of the diameter. So, in order to find the diameter, we have to multiply the radius by 2.

14 * 2=28

So, the diameter of the circle is 28 mL

3 0
3 years ago
Simplification <br>-4a+b+3c+3a-3b+c​
damaskus [11]

Answer:

-a+-2b+4c

Step-by-step explanation:

Combine like terms

-4a+ 3a= -a

b+ -3b= -2b

3c+ c= 4c

7 0
2 years ago
I need help please!!!
seraphim [82]

Answer: number 1

Step-by-step explanation:

That is how you would write the ratio word for word.

- hope this helped!

7 0
3 years ago
Evaluate the expression 34 ÷ (14 − 5) × 2.
bonufazy [111]

Answer:

68/9

Step-by-step explanation:

34 ÷ (14 − 5) × 2

PEMDAS

Parentheses first

34 ÷ (9) × 2

We have no Exponents so

Multiply and Divide from left to right

34/9 *2

68/9

5 0
2 years ago
Read 2 more answers
EASY BRAINLIEST PLEASE HELP!!
DedPeter [7]

Answer:

C. AB = 5.8 cm

Step-by-step explanation:

In trapezoid ABCD, EF is the Midsegment.

.:. EF = {(AB+CD)

.:: 9.2 = {(AB + 12.6)

:: 9.2 x 2 = AB + 12.6

.. 18.4 = AB + 12.6

.. 18.4-12.6 = AB

:: AB = 5.8 cm

6 0
2 years ago
Read 2 more answers
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