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3 years ago

Q 12 plz anyone can solve

Mathematics

1 answer:

Contact [7]3 years ago

6 0

A, B, C, D form a complete circle which is 360 degrees.

Add all 4 together:

A + 2A + 4A+ 3A = 360

10A = 360

Divide both sides by 10:

A = 360/10 = 36

Now we know A so can calculate the rest:

B = 2A = 2(36) = 72 degrees

C = 4A = 4(36) = 144 degrees

D = 3A = 3(36) = 108 degrees

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What is the sum in simplest form for 5/8+2/5

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(5/8)+(2/5)=

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so we multiply to get 40 like

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25/40 + 16/ 40 = 41/40

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4 years ago

Answer please nd thank u

Maksim231197 [3]

Answer:

I can't draw number 1 and 2, but

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2 years ago

The base of a ladder is placed 6 ft from the bottom of the house. The ladder touches the

sammy [17]

Answer:

10 ft

Step-by-step explanation:

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3 years ago

Read 2 more answers

Given IQ scores are approximately normally distributed with a mean of 100 and a standard deviation of 15, the proportion of peop

weeeeeb [17]

The proportion of people with IQs above 130 is 2.3%.

<h3>How to calculate the value?</h3>

Normal distribution, is a probability distribution that is symmetric about the mean, showing that data near the mean are more frequent in occurrence than data far from the mean.

Here the mean is 100 and a standard deviation of 15.

µ = 100, σ = 15

P(X > 130) =

= P( (X-µ)/σ > (130-100)/15)

= P(z > 2)

= 1 - P(z < 2)

Using excel function:

= 1 - NORM.S.DIST(2, 1)

= 0.023 = 2.3%

The value is 2.3%.

Learn more about proportion on:

brainly.com/question/19994681

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2 years ago

Galena is solving the following system. 3x+2y+3z =5 7x+y +7z=-1 4x-4y-z=-3

babymother [125]

Answer:

She did not multiply equation 3 in step 2 by the correct value.

Step-by-step explanation:

Given:

$3x+2y+3z=5\\7x+y+7z=-1\\4x-4y-z=-3$

In order to solve this, we need to eliminate any one variable and then form a simultaneous equation with the remaining two variables. Then, we nee to solve the simultaneous equation.

Here, Galena is trying to eliminate the variable $z$ first.