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3 years ago

Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).

Mathematics

1 answer:

ololo11 [35]3 years ago

3 0

Answer:

∠2≅∠6 because they are corresponding angles (both are upper right of where the lines intersect)
∠5≅∠8 because they are vertical angles (formed by the same pair of lines with only their vertex in common)

Step-by-step explanation:

You have to be able to apply the definitions of corresponding angles and vertical angles.

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A scientist is cooling a liquid at a steady rate. The temperature of the liquid changed by −8212 °C over 215 minutes. What was t

solong [7]

-8212/215 = 38.19 degrees.

5 0

3 years ago

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If testing the claim that sigma subscript 1 superscript 2 baseline not equals sigma subscript 2 superscript 2σ21≠σ22, what do w

12345 [234]

Answer:

The statistic for this system of hypothesis is given by:

$F=\frac{s^2_1}{s^2_2}$

If the statistic is equal to 1 then that means $s^2_1 = s^2_2$ and we don't have enough evidence to conclude that the two population variances and deviations are different.

Step-by-step explanation:

System of hypothesis

We want to test if the variation for a group1 is equal to another one 2, so the system of hypothesis are:

H0: $\sigma^2_1 = \sigma^2_2$

H1: $\sigma^2_1 \neq \sigma^2_2$

Calculate the statistic

The statistic for this system of hypothesis is given by:

$F=\frac{s^2_1}{s^2_2}$

If the statistic is equal to 1 then that means $s^2_1 = s^2_2$ and we don't have enough evidence to conclude that the two population variances and deviations are different.

6 0

3 years ago

Please i need help solve for x

malfutka [58]

Answer:

x <= -5

Step-by-step explanation:

4x + 12 <= -8

4x <= -20

x <= -5

3 0

3 years ago

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If the simple interest on $7000 for 3 years is $1890, then what is the interest rate?

hoa [83]

Answer:

0.09 or 9%

Step-by-step explanation:

I = Prt

Given:

I = 1890

P = 7000

t = 3

Work:

I = Prt

r = I/(Pt)

r = 1890/(7000 x 3)

r = 1890/21000

r = 0.09

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3 years ago

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Anastaziya [24]

Step-by-step explanation:

b.) 8/7≈ 1.1

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1 year ago