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adelina 88 [10]

3 years ago

11

7 over radical 90 write in simplist form

1 answer:

Arte-miy333 [17]3 years ago

5 0

Simplify the square root
$7 \sqrt{90} = 7\sqrt{3 { }^{2} \times 10}$
Separate the numbers in the square root to look like this
$7 \sqrt{3 ^{2} } \sqrt{10}$
Because three is squared, it cancels out the square root
$7 \times 3 \sqrt{10}$
Simplify to get your answer:
$21 \sqrt{10}$

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Kipish [7]

Answer:

Yes.(16.088m combined jump)

Step-by-step explanation:

Combining jumps=4.76+5.428+5.9=16.088

16.088>16

Therefore Juan qualified for the competition

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3 years ago

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Ksju [112]

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A.

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3 years ago

Read 2 more answers

A machine that produces ball bearings has initially been set so that the true average diameter of the bearings it produces is .5

Elodia [21]

Answer:

7.3% percentage of the bearings produced will not be acceptable.

Step-by-step explanation:

Consider the provided information.

Average diameter of the bearings it produces is .500 inches. A bearing is acceptable if its diameter is within .004 inches of this target value.

Let X is the normal random variable which represents the diameter of bearing.

Thus, 0.500-0.004<X<0.500+0.004

0.496<X<0.504

The bearings have normally distributed diameters with mean value .499 inches and standard deviation .002 inches.

Use the Z score formula: $\frac{X-\mu}{\sigma}$

Therefore

$\frac{0.496-0.499}{0.002}\leq z\leq \frac{0.504-0.499}{0.002}$

$\frac{-0.003}{0.002}\leq z\leq \frac{0.005}{0.002}$

$-1.5\leq z\leq 2.5$

Now use the standard normal table and determine the probability of that a ball bearing will be acceptable.

$P(-1.5\leq z\leq 2.5)=0.9938-0.0668=0.9270$

We need to find the percentage of the bearings produced will not be acceptable.

So subtract it from 1 as shown.

1-0.9270=0.073

Hence, 7.3% percentage of the bearings produced will not be acceptable.

3 0

3 years ago

What is the length of bc?

zhuklara [117]

Answer:

15 units

Step-by-step explanation:

ΔABC is right with ∠C = 90° and AB the hypotenuse

using Pythagoras' identity on the triangle

AB² = AC² + BC² , hence

BC² = AB² - AC² = 17² - 8² = 289 - 64 = 225

⇒BC = $\sqrt{225}$ = 15 units

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3 years ago

What is 25% of 7000000

Virty [35]

25% of 700000 is 1750000

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3 years ago