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Trava [24]
3 years ago
5

I need somebody’s help

Mathematics
2 answers:
lisabon 2012 [21]3 years ago
6 0

Answer:

x= 40

so

3x-5= 115

2x-15= 65

Step-by-step explanation:

C is the correct answer. I see that you put a mark on that choice so you are right if you thought that. I hope this helps!

eduard3 years ago
6 0

Answer:

C

Step-by-step explanation:

The 2 angles are same- side interior angles and are supplementary, thus

3x - 5 + 2x - 15 = 180, that is

5x - 20 = 180 ( add 20 to both sides )

5x = 200 ( divide both sides by 5 )

x = 40

Thus

3x - 5 = 3(40) - 5 = 120 - 5 = 115°

2x - 15 = 2(40) - 15 = 80 - 15 = 65°

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The function h is defined by h (x) = 5x - 2.
Shtirlitz [24]

Answer:

x=2

Step-by-step explanation:

h(8)=5x-2

+2        +2

10=5x

Divide both sides by 5

x=2

5 0
3 years ago
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Mrs. Isabelle is making paper and plastic foam animals for her first-grade class. She is calculating the amount of wasted materi
PSYCHO15rus [73]
We are given square with side length l. The largest circle that we can cut from that square has diameter equal to that side. This circle is called inscribed circle.

When cutting circle from square paper we will be left with some extra paper. Area of that extra paper can be calculated using formula:
area_of_extra_paper = area_of_square - area_of_circle

Now we can insert formulas:
A =  l^{2} -  ( \frac{l}{2} )^{2}  * \pi  \\ A=l^{2} -   \frac{l^{2}}{4} * \pi  \\ A=l^{2} (1- \frac{ \pi }{4} )

This is area of extra paper when we cut one circle. When we cut multiple circles we have:
A=N*l^{2} (1- \frac{ \pi }{4} )
Where:
N = number of circles
This formula is roughly:
A=0.785*N*l^{2}
6 0
3 years ago
100÷10-9[46-5(6)] power 3
Lapatulllka [165]

Answer:

-36864

Step-by-step explanation:

100 ÷ 10=10

(a)=a

(46-5x6) power 3=16

9x16 power 3 =36864

10-36864

=-36864

5 0
3 years ago
Evaluate 5x^2 + 2 for x = -1.
iogann1982 [59]

Answer:

7

Step-by-step explanation:

If x = -1 then we need to plug that into the equation.

5(-1)^2 +2

Then solve for the first part

5(1) + 2

Then multiply.

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Then add

7.

Hope this helped!

6 0
3 years ago
Read 2 more answers
Help me with this please
bezimeni [28]
It's true we can assume that YXZ = YAZ, because:

angle XZY & AZY = 90° (give)

XZ = ZA (given)

YZ (common side), hence both triangles are equal SAS
3 0
3 years ago
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