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inessss [21]
3 years ago
8

What is the sum of 3,9​

Mathematics
2 answers:
andrey2020 [161]3 years ago
8 0

Answer:

3 + 9 = 12 !

Step-by-step explanation:

Sergio039 [100]3 years ago
4 0
3 x 9 = 27 if you multiply
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I don't understand raitos please help solve math problems
ollegr [7]
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Next you put it into a fraction: 15/36
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4 0
3 years ago
In the image, point A marks the center of the circle. Which two lengths must form a ratio of 1:2?
kari74 [83]

Answer: AI:EF

Step-by-step explanation:

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3 years ago
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Jerome, kevin and seth shared a submarine sandwhich. Jerome ate 1/2 of the sandwich , kevin ate 1/3 of the sandwich, and seth at
Paul [167]

Given:

Jerome ate 1/2 of the sandwich , Kevin ate 1/3 of the sandwich, and Seth ate the rest.

To find:

The ratio of jerome's share to kevin's share to seth's share.

Solution:

Jerome ate 1/2 of the sandwich. So,

Jerome's share = \dfrac{1}{2}

Kevin ate 1/3 of the sandwich. So,

Kevin's share = \dfrac{1}{3}

Seth ate the rest. So,

Seth's share = 1-\dfrac{1}{2}-\dfrac{1}{3}

                     = \dfrac{6-3-2}{6}

                    = \dfrac{1}{6}

The ratio of jerome's share to kevin's share to seth's share is:

\dfrac{1}{2}:\dfrac{1}{3}:\dfrac{1}{6}

To simplify the ratio multiply the ratio by 6.

\dfrac{1}{2}\times 6:\dfrac{1}{3}\times 6:\dfrac{1}{6}\times 6

3:2:1

Therefore, the ratio of jerome's share to kevin's share to seth's share is 3:2:1.

8 0
3 years ago
Find Y.<br> Round to the nearest tenth.
Dennis_Churaev [7]

Answer:

Y ≈ 59.0°

Step-by-step explanation:

Using the Cosine rule

cosY = \frac{x^2+z^2-y^2}{2xz}

with x = 22, y = 20, z = 18

cosY = \frac{22^2+18^2-20^2}{2(22)(18)}

        = \frac{484+324-400}{792}

        = \frac{408}{792} , then

Y = cos^{-1} ( \frac{408}{792} ) ≈ 59.0° ( to the nearest tenth )

8 0
3 years ago
A teacher collects data on the number of hours, s, his students spend studying and the number of hours, t, they spend watching T
Rom4ik [11]
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4 years ago
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