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Pavlova-9 [17]
2 years ago
7

REWARDING BRAINLY FOR CORRECT ANSWER

Mathematics
2 answers:
Leviafan [203]2 years ago
7 0

Answer:it's quiet easy, i dyslexic c:

Step-by-step explanation:

Edit:sorry for my spelling errors I didn't have auto correct on :c

AlexFokin [52]2 years ago
6 0
It is statistical because there can be a variety of answers.
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Solve the proportion for x.
Delvig [45]

\frac{x}{8}  =  \frac{8}{64}  \\ 64x = 8 \times 8 \\ 64x = 64 \\ x =  \frac{64}{64}  \\  \boxed{x = 1}

  • Proportion for x is <u>1</u><u>.</u>
  • Use <u>cross </u><u>multiplication</u><u>.</u>

5 0
2 years ago
At the track practice, Sam practiced running the hurdles for 1 hour and 25 minutes. Then he practiced the high jump for 20 minut
blagie [28]

Answer:

Practice started at 1:55 pm.

Step-by-step explanation:

6 0
2 years ago
A and B are complementary angles if angle a equals (X +24) and angle B equals (X +16) then what is the measurement of b
Hatshy [7]

If A and B are complementary angles, then they add up to 90 degrees.

So A + B = 90 => (x + 24) + (x + 16) = 90 => 2x + 40 = 90 => 2x = 50.

So x = 25, and thus, the measurement of B is (25 + 16) = 41.

The measurement of angle A is (25 + 24) = 49, and indeed they are complementary.

4 0
3 years ago
Ten times the sum of half a number and 6 is 8
Delvig [45]

Im sorry but I don't really get the question, can you please explain it a little better?


4 0
3 years ago
Determine the critical value or values for a one-mean z-test at the 1% significance level if the hypothesis test is right-tailed
kifflom [539]

Answer:

We need to conduct a hypothesis in order to determine if the mean is greater than specified value, the system of hypothesis would be:      

Null hypothesis:\mu \leq \mu_o      

Alternative hypothesis:\mu > \mu_o      

For this case the significance is 1%. So we need to find a critical value in the normal standard distribution who accumulates 0.99 of the area in the left and 0.01 in the right and for this case this critical value is:

z_{crit}= 2.326

Step-by-step explanation:

Notation

\bar X represent the sample mean

\sigma represent the standard deviation for the population      

n= sample size      

\mu_o represent the value that we want to test    

\alpha represent the significance level for the hypothesis test.    

z would represent the statistic (variable of interest)      

State the null and alternative hypotheses.      

We need to conduct a hypothesis in order to determine if the mean is greater than specified value, the system of hypothesis would be:      

Null hypothesis:\mu \leq \mu_o      

Alternative hypothesis:\mu > \mu_o      

For this case the significance is 1%. So we need to find a critical value in the normal standard distribution who accumulates 0.99 of the area in the left and 0.01 in the right and for this case this critical value is:

z_{crit}= 2.326

3 0
2 years ago
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