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4 years ago

How do I solve this?

Mathematics

1 answer:

Harrizon [31]4 years ago

5 0

Multiply 5x200x0.75 and then convert your answer to yards :)

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Look at the picture and let me know the answer please

Inga [223]

X=32 because both equations are equal to 180 degrees (3x+22°+x+30°=180) just solve that equation and you’ll get your answer

7 0

3 years ago

Last week, mallory flew two round trips. They were 3,720 miles and 5,985 miles. Select all of the choices that are good estimate

SVETLANKA909090 [29]

Answer:

Mallory flew in total 10,000 miles, rounded :D

Step-by-step explanation:

Since we're using rounding to place values, first we have to have the total amount of miles flown by Mallory, so we make the sum:

3,720 + 5,985 = 9,705 miles

then, we have to round thefirst digit to the right following this rule

0-4 is rounded down

5-9 is rounded up

now, since the number we want to round is the first digit on the left (9), and following the rules above, we change the "9" for a "10". the rest of the numbers are now transformed into zeros (0)

9,705 >>> rounding it up >>> 10,000

Let me know if you have any questions XD

8 0

3 years ago

Simplify 11 square root 1215

gavmur [86]

Answer:

9 • sqrt(15)

Step-by-step explanation:

8 0

3 years ago

What is the circumference if a circle is 3cm

alekssr [168]

Answer:

0.48 cm

Step-by-step explanation:

6 0

4 years ago

Suppose you are testing the null hypothesis that a population mean is less than or equal to 46, against the alternative hypothes

Marizza181 [45]

Answer: 2.5

Step-by-step explanation:

Let $\mu$ be the population mean .

Then, Null hypothesis : $H_0:\mu\leq46$

Alternative hypothesis : $H_1:\mu>46$

We assume that this is a normal distribution.

Given : Sample size : n=25 , since the sample is small (n<30) so we cannot apply z-test . Thus the test is t-test.

Sample mean : $\overline{x}=50$

Population standard deviation : $\sigma= 8$

The test statistic for population mean is given by :-

$t=\dfrac{\overline{x}-\mu}{\dfrac{\sigma}{\sqrt{n}}}$

i.e. $t=\dfrac{50-46}{\dfrac{8}{\sqrt{25}}}=2.5$

Hence, the observed critical value = 2.5

7 0

3 years ago