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lakkis [162]
3 years ago
9

hello! i struggle with math A LOT so if u guys can help me with these questions with the work i would appreciate a lot

Mathematics
2 answers:
Scrat [10]3 years ago
7 0

Answer:

<u>Exercise #1</u> = ³/₄

<u>Exercise #3</u> = ¹/₂

<u>Exercise #5</u> = 1 ¹/₉

<u>Exercise #7</u> = ²/₅

<u>Exercise #9</u> = ¹¹/₁₅

Step-by-step explanation:

When adding or subtracting fractions, you always have to find a common denominator first.

<u>Exercise #1</u>

⁵/₈ + ¹/₈

In this exercise, we already have the common denominator 8. Next, add the numerators together.

⁵/₈ + ¹/₈ = ⁶/₈

From here, we can simplify the fraction by dividing both the numerator and the denominator by 2.

6 ÷ 2 = 3

8 ÷ 2 = 4

This is as simplified our answer can get since there are no more common factors between the numerator (3) and the denominator (4).

⁶/₈ = ³/₄

<u>Exercise #3</u>

-¹/₄ + ³/₄

In this exercise, we already have the common denominator 4. Next, add the numerators together. (In this exercise, the numerators are -1 and 3. When adding a negative number, you can think of the equation as: 3 - 1 = 2)

-¹/₄ + ³/₄ = ²/₄

From here, we can simplify the fraction by dividing both the numerator and the denominator by 2.

2 ÷ 2 = 1

4 ÷ 2 = 2

This is as simplified our answer can get since there are no more common factors between the numerator (1) and the denominator (2).

²/₄ = ¹/₂

<u>Exercise #5</u>

⁵/₉ + ⁵/₉

In this exercise, we already have the common denominator 4. Next, add the numerators together.

⁵/₉ + ⁵/₉ = ¹⁰/₉

From here, we can simplify the fraction by turning it into a mixed number. To do this, we can subtract 9 from the numerator because 9 is the denominator and ⁹/₉ = 1. From this, we can determine that our simplified answer is:

¹⁰/₉ = 1 ¹/₉

<u>Exercise #7</u>

³/₁₀ + ¹/₁₀

In this exercise, we already have the common denominator 10. Next, add the numerators together.

³/₁₀ + ¹/₁₀ = ⁴/₁₀

From here, we can simplify the fraction by dividing both the numerator and the denominator by 2.

4 ÷ 2 = 2

10 ÷ 2 = 5

This is as simplified our answer can get since there are no more common factors between the numerator (2) and the denominator (5).

⁴/₁₀ = ²/₅

<u>Exercise #9</u>

⁷/₁₅ + ⁴/₁₅

In this exercise, we already have the common denominator 15. Next, add the numerators together.

⁷/₁₅ + ⁴/₁₅ = ¹¹/₁₅

This is as simplified our answer can get since there are no more common factors between the numerator (11) and the denominator (15).

~Hope this helps!~

elena-s [515]3 years ago
4 0
Pretty sure 1 is 6/8
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Step-by-step explanation:

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2 years ago
Question 2 of 4
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Answer:

The time it took for the bottle rocket to reach a height of 200 feet is 60 seconds.

Step-by-step explanation:

The function for the height of the bottle rocket (in feet), <em>t</em> seconds after  it is launched is:

h(t)=1157-16\ t

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h(t)=1157-16\ t

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Thus, the time it took for the bottle rocket to reach a height of 200 feet is 60 seconds.

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Step-by-step explanation:

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Step-by-step explanation:

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