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Gennadij [26K]
4 years ago
9

I really need some help

Mathematics
1 answer:
matrenka [14]4 years ago
4 0
7. 1/3(9x + 18) = 3x + 6 each side is 3x + 6

8. 5x+20 does NOT equal 5(x+20) because 5(x+20) = 5x + 100

9. Perimeter= 4n, Area= n squared 

10. ( left to right) 4, 2a, b
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Math help pls!! answer choices are 17.1 , 3.5 , 8.4 , and 1.5
Hoochie [10]

Triangles ABD and BCD are similar, because they are both right and share a common angle, and thus all three angles are equal.

This means that we can set the proportion

AB\div AD = BC\div DC

Plug the numbers and we have

5\div 3.5 = 12\div x

Solve for x:

x=\dfrac{12\cdot 3.5}{5}=8.4

4 0
3 years ago
Which is the only center point that lies on the edge of a triangle?
Alekssandra [29.7K]

Answer:

Circumcenter of a right triangle is the only center point that lies on the edge of a triangle. Step-by-step explanation: Circumcircle is the circle that passes through all three vertices of the triangle.

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
Square root to the nearest tenth √1.001 ,√1.1212 ,√2.895, √4.005 ,√6.2533
Svetlanka [38]

Answer:

1.0 ; 1.1 ; 1.7 ; 2.0 ; 2.5

Step-by-step explanation:

Given the following :

√1.001 ,√1.1212 ,√2.895, √4.005 ,√6.2533

The square root to the nearest tenth :

Using calculator :

√1.001 = 1.0004998 = 1.0

√1.1212 = 1.0588673 = 1.1

√2.895 = 1.7014699 = 1.7

√4.005 = 2.0012496 = 2.0

√6.2533 = 2.5006599 = 2.5

3 0
3 years ago
Rewrite the radical expression as an exponential expression, and then simplify.
sergij07 [2.7K]

Answer:

Answer is C

Step-by-step explanation:

just did the test

8 0
4 years ago
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A right triangle has one angle that measures 60°. What is the measure of the other acute angle?
Inessa [10]

Answer:

30 degrees

Step-by-step explanation:

90 + 60 + x = 180

150 + x = 180

-150 -150

x = 30

5 0
3 years ago
Read 2 more answers
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