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3 years ago

This triangle can be called acute or _____________.

Mathematics

2 answers:

RUDIKE [14]3 years ago

4 0

B: isosceles triangle
Because there are two equal sides

diamong [38]3 years ago

4 0

Answer:

B: isosceles

Step-by-step explanation:

Two angles of an isosceles acute triangle measure the same.

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In Isaac's closet, the ratio of short-sleeve to long-sleeve shirts is 5:2.

schepotkina [342]

Answer:

12 long sleeved

Step-by-step explanation:

30 / 5 = 6

6 x 2 = 12

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3 years ago

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Simplify 7x + [x - (5 + x)].<br><br> 9x - 5<br> 8x - 5<br> 7x - 5

Leokris [45]

I got the answer 7x-5

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3 years ago

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Which expression is equivalent to (x Superscript one-half Baseline y Superscript negative one-fourth Baseline z) Superscript neg

Darina [25.2K]

By using exponent properties, we will get the simplified expression:

$x^{-1}*y^{1/2}*z^2$

<h3>How to simplify the given expression?</h3>

Here we have the expression:

$(x^{1/2}*y^{-1/4}*z)^{-2}$

Remember the exponent properties:

$(a^n)^m = a^{n*m}$

And:

$(a*b)^n = (a^n)*(b^n)$

So using these two properties, we can rewrite:

$(x^{1/2})^{-2}*(y^{-1/4})^{-2}*(z)^{-2}\\\\(x^{-2*1/2})*(y^{-2*-1/4})*(z^{-2}})\\\\x^{-1}*y^{1/2}*z^2$

So we conclude that the completely simplified expression is:

$x^{-1}*y^{1/2}*z^2$

If you want to learn more about exponents:

brainly.com/question/8952483

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8 0

2 years ago

The average speed of a volleyball serve is 57 miles per hour. Natalie practiced a new technique to improve her serving speed. He

Sergio [31]

Answer:

a) Null hypothesis: H₀ : μ = 57

Alternative hypothesis H₁ : μ ≠ 57

b) The calculated value t =4.077 > 1.6896 at 99% of confidence degrees of freedom.

Natalie is trying to prove the new technique is an improvement over the old technique.

Step-by-step explanation:

The average speed of a volleyball serve is 57 miles per hour.

μ = 57 miles per hour

Average speed using the new technique was 58.9 miles per hour, with a standard deviation of 2.8 miles per hour.

sample mean x⁻ = 58.9 miles per hour

Standard deviation S = 2.8 miles per hour.

Null hypothesis: H₀ : μ = 57

Alternative hypothesis H₁ : μ ≠ 57

Degrees of freedom γ=n-1

The test statistic

$t= \frac{x^{-} -mean}{\frac{S.D}{\sqrt{n} } }$

$t= \frac{58.9 -57}{\frac{2.8}{\sqrt{36} } }$

t = 4.077

Degrees of freedom γ=n-1 = 35-1 =34

tₐ = 2.0322

<u>The calculated value t =4.077 > 1.6896 at 99% of confidence degrees of freedom.</u>

<u>The Natalie is not trying to prove the new technique is an improvement over the old technique.</u>

3 0

4 years ago

What value of n makes the equation true 2/3 n= -12

muminat

Answer:

The answer is - 18

Step-by-step explanation:

$\frac{2}{3} n = - 12$

To solve the equation multiply both sides of the equation by 3

That's

<h3> $3 \times \frac{2}{3} n = - 12 \times 3$ </h3>

Simplify

Divide both sides of the equation by 2

We have the final answer as

The value of n that makes the equation true is - 18

Hope this helps you

5 0

3 years ago