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Goryan [66]
3 years ago
8

Need help with these 2

Mathematics
2 answers:
luda_lava [24]3 years ago
4 0
19. 38x - 3y - 34 because 5(7x+3y-8) =!35x+15y-40 and 3(x-6y+2 = 3x -18y +6. Combine alike factors.

20. Yes it is factored correctly.
Arada [10]3 years ago
4 0

Answer:

19 is 38x - 3y - 34

20 would be yes

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Josue leans a 26-foot ladder against a wall so that it forms an
postnew [5]

Answer:

25.61 feet

Step-by-step explanation:

First, we can draw a picture (see attached picture). With the wall representing the rightmost line, and the ground representing the bottom line, the ladder (the hypotenuse) forms a 80 degree angle with the ground and the wall and ground form a 90 degree angle.

Without solving for other angles, we know one angle and the hypotenuse, and want to find the opposite side of the angle.

One formula that encompasses this is sin(x) = opposite/hypotenuse, with x being 80 degrees and the hypotenuse being 26 feet. We thus have

sin(80°) = opposite / 26 feet

multiply both sides by 26 feet

sin(80°) * 26 feet = opposite

= 25.61 feet as the height of the wall the ladder reaches

6 0
3 years ago
What are the integer solutions to the inequality below?<br><br> 4x+1&lt;5x≤3(x+2)
Sindrei [870]

Answer:

1<x≤3

Step-by-step explanation:

7 0
3 years ago
Which regular polygon has a minimum rotation of 45 degrees to carry the polygon onto itself?
lubasha [3.4K]

Answer:

Hence, a regular polygon that has a minimum rotation of 45 degrees to carry the polygon onto itself is:

A. octagon.

Step-by-step explanation:

We know that the for a regular polygon with 'n' sides the minimum rotation that can carry the polygon onto itself is:

\dfrac{360\degree}{n}

Here we are given the minimum angle of  rotation such that polygon is transformed to itself as 45 degree.

i.e. we have:

\dfrac{360}{n}=45\\\\n=\dfrac{360}{45}\\\\n=8

Hence, the number of sides of a polygon are 8.

Hence, the polygon is:

A. octagon.

( Since a polygon with 8 sides is called a octagon)

7 0
3 years ago
Read 2 more answers
What’s the answer???
VladimirAG [237]
The mean remains the same
3 0
3 years ago
There are 20 female performers in a dance recital. The ration of men to women is 4:5. How many men are in the dance recital?
klasskru [66]

Answer:

16

Step-by-step explanation:

men                  women

 4 (times by 4)        :              5  ( times by 4)

             16              :                                 20

please give me brainiest!!!

8 0
3 years ago
Read 2 more answers
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