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sammy [17]
2 years ago
13

Need help only on 9 and11 thank you don’t know really how to do

Mathematics
1 answer:
Marina86 [1]2 years ago
6 0

غف8ىرف4-

ف8غ4ى0ض8رص90

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Two parallel lines are crossed by a transversal. Horizontal and parallel lines b and c are cut by transversal a. At the intersec
pogonyaev

Answer:

x=22

Step-by-step explanation:

According to the Alternate Interior angles theorem, the bottom left angle and the upper right angle have the same measure. Because they were formed from a pair of parallel lines crossed by a transversal one.

So, algebraically:

5x+5=115\\ 5x+5-5=115-5\\ 5x=110\\ \frac{5x}{5}=\frac{115}{5}\\x=22

8 0
3 years ago
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The number of students attending summer school at a local community college has been decreasing each year by 7%. If 847 students
alina1380 [7]

Answer:

≈ 634

Step-by-step explanation:

n = 847(1 * .07)^4

n = 847(0.93)^4

n = 633.60005247

n ≈ 634

3 0
3 years ago
Kelly bought a new car for $20,000. The car depreciates at a rate of 10% per year. Write an equation to model the car's value.
Anna71 [15]

y=20,000-.10x

with x being the number of years

3 0
3 years ago
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Which expression represents the volume of the pyramid? One-fifth(5.2)h cm3 StartFraction 1 Over 5 h EndFraction(5.2)h cm3 One-th
anyanavicka [17]

Answer:

1/3(5.2)h cm³

Step-by-step explanation:

A solid right pyramid has a regular hexagonal base with an area of 5.2 cm2 and a height of h cm. Which expression represents the volume of the pyramid?

One-fifth(5.2)h cm3 StartFraction 1 Over 5 h EndFraction(5.2)h cm3

One-third(5.2)h cm3 StartFraction 1 Over 3 h EndFraction(5.2)h cm3

Volume of the pyramid = 1/3 × area × height

Area = 5.2 cm²

Height = h cm

Volume of the pyramid = 1/3 × 5.2 cm² × h cm

= 1/3(5.2)h cm³

7 0
2 years ago
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Dividing a whole number by a unit fraction results in a:
Alex Ar [27]

Answer:

each unit being divided into smaller parts

Step-by-step explanation:

7 0
2 years ago
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