2 years ago

Evaluate the following expression when a = 5 and b = 6 3a +10b

Mathematics

1 answer:

Anni [7]2 years ago

6 0

The answer is 75 I believe :)

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90 - y = 3y - 70 solve for y I NEEEED THIS NOWWWWWWWWWWWWWWWWWWWWWWWWWWWWW

kirill [66]

Answer:

y=40

Step-by-step explanation:

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1 year ago

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In a certain city, there are about one million eligible voters. A simple random sample of size 10,000 was chosen to study the re

Ronch [10]

Answer:

REQUIRED TEST STATICS IS 35.19

Step-by-step explanation:

total size of sample = 10,000

men women

voted 2777 3466

did not vote 1444 2313

By chi square test we can find the relationship between gender and participation in the election

$X^2 = \frac{ N(ad-bc)^2}{(a+c)(b+d)+(a+b)(c+d)}$

where

a represent = 2777, b = 3466, c= 1444, d = 2313, N = 10000

Putting values to get chis square statics

$X^2 = \frac{ 10000(2777*2313-3466*1444)^2}{(2777+1444)(3466+2313)+(2777+3466)(1444+2313)}$

$X^2 = = 35.159$

HENCE REQUIRED TEST STATICS IS 35.19

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2 years ago

7x − 11 = 31 pls help me with this question

Katarina [22]

Answer:

Step-by-step explanation:

add 11 to both sides, that cancels out so then your left with 7x=42, divide by 7 on both sides then you should get x=6

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2 years ago

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If you know the length of the side of the square, how can you figure out the area?

KengaRu [80]

Answer:

By multiplying

If the sides were 5 then you would do 5x5 to get the area

Hope this makes sense :)

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2 years ago

Two sides of a right triangle measure 2 units and 4 units.

wel

Answer:

Step-by-step explanation:

using pythagorean theorem to find the hypotenuse gives √20, so the measure of the side of the square is also √20, square that to give the area of square, which is 20

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2 years ago