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Sophie [7]
3 years ago
5

3(x+4)+5(x+1)=25 what is x?

Mathematics
1 answer:
Serjik [45]3 years ago
3 0
3x+12+5x+5=25
8x+17=25
8x=8
x=1
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Write a slope- intercept equation for a line with given characters m=-4/5, passes through (-4,-5)
aleksandr82 [10.1K]

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6 0
3 years ago
Alex needs 80 cm of thread for a sewing project. The thread is on a spool with a circumference of 10 cm. How many times must ale
Mrrafil [7]

<u>Answer:</u>

If the spool has 10 cm of circumference or perimeter, this means that 10 cm of thread fits the whole circumference of the spool, which also means that

<h2>1 unwind is equivalent to 10 cm of thread. </h2>

Then, we have to make the following question:

If 10 cm of thread is equivalent to 1 unwind, to how many unwinds is equivalent 80 cm of thread?

If we want to know how many time does Alex need to unwind the spool, we can use the following relation also called the <u>Rule of Three: </u>

<u> </u>

10 cm----1 unwind

80 cm----X unwinds

X=\frac{80cm(1unwind)}{10cm}

X=8unwinds

The answer is:

Alex must unwind the spool 8 times in order to get 80 cm of thread


5 0
2 years ago
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Step-by-step explanation:

Me and your dad was like this last night and and now I’m cuz of this ➕ this ⬆️⬇️⬆️⬇️⬆️⬇️

6 0
2 years ago
Triangle ABC is translated 5 units to the right and 4 units up to create triangle A' B'C'.
kherson [118]

Answer:

74°

Step-by-step explanation:

From the attached figure, translation only affects the length of the sides of the triangle :

From the figure :

We are given ;

A = 80° ; C = 26° ; B =?

Sum of angles in a triangle :

A + B + C = 180°

80° + B + 26° = 180°

106° + B = 180°

B = 180 - 106

B = 74°

4 0
2 years ago
Help! need awnsere now!
zlopas [31]

Answer:A is the correct answer

Step-by-step explanation:

Let x represent the number of female students that are left handed. There are 5 times as many right handed female students as there are left handed female students. This means that the number of female students that are right handed is 5x

Let y represent the number of male students that are left handed. There are 9 times as many right handed male students as there are left handed male students. This means that the number of male students that are right handed is 9x

The total number of left handed students is 18. Therefore

x + y = 18

The total number of right handed students is 122. Therefore

5x + 9y = 122 - - - - - - - - - -1

Substituting x = 18 - y into equation 1, it becomes

5(18 - y) + 9y = 122

90 - 5y + 9y = 122

- 5y + 9y = 122 - 90

4y = 32

y = 32/4 = 8

x = 18 - y = 18 - 8

x = 10

Total number of right handed female students is 5×10 = 50

Total number of right handed students is 122.

Probability that a right handed student selected at random is a female will be

50/122 = 0.4098

approximately 0.410

8 0
3 years ago
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