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3 years ago

A triangle has angle measurements of 30°, 70°, and 80°. What kind of triangle is it?

Mathematics

1 answer:

Juliette [100K]3 years ago

5 0

The answer is acute triangle because none of the angles are greater than 90°

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What is the product? (4x)(-3x^8)(-7x^3)<br> 0 -84x^12<br> o -84x^24<br> O 84x^12<br> O 84x^24

Rufina [12.5K]

Answer:

$84 {x}^{12} \:$

Option C

Step-by-step explanation:

$(4x)( - 3 {x}^{8} )( - 7 {x}^{3} )$

$(4x)(21 {x}^{8 + 3} )$

$84 {x}^{1 + 11}$

$84 {x}^{12}$

3 0

3 years ago

Question

AlekseyPX

Answer:

The population mean is 5 volts

Step-by-step explanation:

Output voltage is assumed to be normally distributed, with standard deviation 0.25 Volts

s=0.25

n = 8

$H_0:\mu = 5\\H_a:\mu \neq 5$

Sample mean = $\bar{x}=4.85$

Since n < 30 and population standard deviation is unknown

So, we will use t test

Formula : $t = \frac{x-\mu}{\frac{s}{\sqrt{n}}}$

$t = \frac{4.85-5}{\frac{0.25}{\sqrt{8}}}$

t=-1.69

Refer the t table for p value

Degree of freedom = n-1 = 8-1 = 7

So, $t_{(df,\alpha)}=t_{7,0.05}=2.365$

P value >α

So, We are failed to reject null hypothesis

Hence The population mean is 5 volts

7 0

3 years ago

Number 5 but if u can do number 6 that would be great ✋

mamaluj [8]

Answer:

5: 45 miles

6: y=20x

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers

Two planes leave an airport at noon. If the eastbound plane flies at 560 mph and the westbound plane flies at 500 mph, at what t

o-na [289]

Your problem is an example of a distance problem, so you muct know the formula to find the distance. To find the distance we simply multiply the rate by the time, or as you'll see more often, d = r t. That means to calculate distance traveled you need rate and time.

Take note, planes are traveling in opposite direction, which means 2000 miles will be the sum of the distances that the two planes have traveled.

D (Plane 1) + D(Plane 2). = 2000

Let t = time in minutes

560t + 500t = 2000

Solve for t. Take it ftom here.

5 0

3 years ago

The critical value for z* for a hypothesis test of the claim at 5% significance is z* = 1.96. How should the z-statistic for the

Kitty [74]

Answer:

its A

Step-by-step explanation:

4 0

4 years ago