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Vlad1618 [11]
3 years ago
14

What number is 65% of 200

Mathematics
2 answers:
bulgar [2K]3 years ago
4 0
I think it’s 130. Why? Because 65 x 200 over 100 = 130
Gennadij [26K]3 years ago
4 0
130?
divide 200 by 100 and you'll get 2 then multiply 2 times 65 and that's 130
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The three sides of a triangle measure 8,10 and 12 units. Is this a right triangle? Prove whether it is or not using the converse
kvasek [131]

Answer:

square of longest side ≠ the sum of the squares of the other two sides

It's not a right triangle

Step-by-step explanation:

The converse of the Pythagorean Theorem is: If the square of the length of the longest side of a triangle is equal to the sum of the squares of the other two sides, then the triangle is a right triangle.

square of longest side: 12       12² = 144

the sum of the squares of the other two sides: 8² + 10² = 164

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3 years ago
Celine is estimating the number of tiles in a mosaic. There are 7 different colors, and 472 tiles of each color. There are also
ValentinkaMS [17]

Answer:

3,400 tiles

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8 0
3 years ago
A manufacturer of running shoes knows that the average lifetime for a particular model of shoes is 15 months. Someone in the res
Alexus [3.1K]

Answer:

Step-by-step explanation:

Hello!

So you have a new type of shoe that lasts presumably longer than the ones that are on the market. So your study variable is:

X: "Lifetime of one shoe pair of the new model"

Applying CLT:

X[bar]≈N(μ;σ²/n)

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x[bar]: 17 months

S= 5.5 months

Since you have to prove whether the new shoes last more or less than the old ones your statistical hypothesis are:

H₀:μ=15

H₁:μ≠15

The significance level for the test is given: α: 0.05

Your critical region will be two-tailed:

Z_{\alpha /2} = Z_{0.025}= -1.96

Z_{1-\alpha /2} = Z_{0.975}= 1.96

So you'll reject the null Hypothesis if your calculated value is ≤-1.96 or if it is ≥1.96

Now you calculate your observed Z-value

Z=<u>x[bar]-μ</u> ⇒ Z=<u>    17-15     </u> = 1.99

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Since this value is greater than the right critical value, i.e. Zobs(1.99)>1.96 you reject the null Hypothesis. So the average durability of the new shoe model is different than 15 months.

I hope you have a SUPER day!

5 0
3 years ago
What is the lateral area of the pyramid?
charle [14.2K]
Answer will be C. 241.6 ft.²

4 0
2 years ago
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liq [111]

Answer:

  ∂u/∂xi = i·cos(sn)

Step-by-step explanation:

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  ∂u/∂xi = i·cos(sn)

6 0
3 years ago
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