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3 years ago

-3/8+4/9 in a fraction

Mathematics

2 answers:

VMariaS [17]3 years ago

8 0

Answer:

5/72

Step-by-step explanation:

i don't know how to explain it but this is the answer how this helps you alittle

Andre45 [30]3 years ago

5 0

- 3/8 + 4/9

= LCM = 72

= - 3 * 9/ 8 * 9 = -27/ 72

= 4 * 8 / 9 * 8 = 32 / 72

= (-27 + 32)/ 72

= 5/72

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Is this set of ratios equal?: 4/7 and 9/13

wel

Answer:

NO this set is not equivalent

Step-by-step explanation:

Okay the way you find out if a pair of ratios are equal is you would divide the denominator and nominator with each other, so: 13/7 and 9/4. But sense the answer would be in decimal form and cant be simplified this wouldnt be considered equivalent. Also if you divide 7 by 4 you get a different answer than when you do 13 divided 9.

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3 years ago

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One hundred students are asked a survey question as they walk through the front gate at their middle school. Is this a represent

ivann1987 [24]

<span>Given that one hundred students are asked a survey question as they walk through the front gate at their middle school.

This a representative sample of the schools population because the sampling is random and is not biased.</span>

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3 years ago

Quizizz help 10 pts each brainiest guaranteed blah blah blah

emmainna [20.7K]

Answer:

$5x^3-2x^2+2x+9$

Step-by-step explanation:

(5x^3+4x^2)−(6x^2−2x−9)

To find the opposite of 6x^2−2x−9 find the opposite of each term.

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5x^3-2x^2+2x+9

5 0

2 years ago

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Y = 7x if y = 196 , what is x ?

katovenus [111]

X is 26

Just divide 196 by 7

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3 years ago

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A kite is stuck in a 36-ft tree. If the angle of elevation from the kite and the ground is 12, find the length of the kite.

yanalaym [24]

Answer:

173.15 ft.

Step-by-step explanation:

Please find the attachment.

Let L be the length of kite.

We have been given that a kite is stuck in 36-ft tree. The angle of elevation from the kite and the ground is 12.

We can see from our attachment that kite and tree form a right triangle. height of tree is opposite of angle of elevation and length of kite is hypotenuse.

Since we know that Sine relates the opposite and hypotenuse of a right triangle, so we will use sine to find the length of kite.

$sin(12)=\frac{36}{L}$

$L=\frac{36}{sin(12)}$

$L=\frac{36}{0.207911690818}$

$L=173.1504364105882792\approx 173.15$

Therefore, the length of kite is 173.15 ft.

4 0

3 years ago