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Hunter-Best [27]

2 years ago

10

Mr.Chang has a bunch of ballons.4/8 of the ballons are red.2/8 of the ballons are blue.What fraction of the ballons are neather

red or blue?

1 answer:

djverab [1.8K]2 years ago

4 0

Answer:

The amount that are neither red nor blue are 2/8 or 1/4

Step-by-step explanation:

In order to find this, subtract both fractions from 1.

1 - 2/8 - 4/8

8/8 - 2/8 - 4/8 = 2/8

2/8 can be simplified to 1/4

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skelet666 [1.2K]

Answer:

Step-by-step explanation:

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3 0

2 years ago

The hourly wages of a sample of 130 system analysts are given below.

atroni [7]

Answer: b. 30%

Step-by-step explanation:

A measure of relative variability is known as coefficient of variation. It is the ratio of the standard deviation to the mean.

i.e. $CV=\dfrac{\sigma}{\mu}$

Given: mean = $\mu=90$

Variance = $\sigma^2 = 729$

$\sigma=\sqrt{729}=27$

Now, $CV=\dfrac{27}{90}=0.3$

in percent , $CV= 0.3\times100\%= 30\%$

Hence, correct option is b. 30%.

8 0

2 years ago

Two vertical poles of lengths 11 ft and 14 ft stand 16 ft apart. A cable reaches from the top of one pole to some point on the g

Alex17521 [72]

We are given

total length of cable is 30 feet

and this cable is on hypotenuse sides of the triangles

so, we can draw triangle as

Let's assume those hypotenuse as 'a' and 'b'

so, we will have

$a+b=30$

now, we can find 'a' and 'b' from triangle

Smaller triangle:

$a=\sqrt{x^2+11^2}$

Larger triangle:

$b=\sqrt{(16-x)^2+14^2}$

we know that

$a+b=30$

so, we can plug this value

and we get

$\sqrt{x^2+11^2}+\sqrt{(16-x)^2+14^2} =30$

now, we can solve for x

$\left(\sqrt{x^2+11^2}\right)^2=\left(30-\sqrt{\left(16-x\right)^2+14^2}\right)^2$

$32x-1231=-60\sqrt{x^2-32x+452}$

$1024x^2-78784x+1515361=3600x^2-115200x+1627200$

now, we can use quadratic formula

we get

$x=\frac{-\sqrt{36416^2-1152389056}+36416}{5152},\:x=\frac{\sqrt{36416^2-1152389056}+36416}{5152}$

$x=4.510,x=9.627$

so,

The point should be located 4.510 feet , 9.627 feet from the smaller pole to use 30 feet cable............Answer

6 0

2 years ago

2x -3 =6 <br><br> Value of x <br><br> I don't know help

OLEGan [10]

You have to add 3 to both sides to get 2x= 9. Then divide 2 by both sides and x would equal 9/2. U can put tht into a decimal if u want though

4 0

3 years ago

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Find the value of 4^2+6^2 .20 52 100

suter [353]

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3 years ago

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