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2 years ago

Math you can get brainly est

Mathematics

2 answers:

Mademuasel [1]2 years ago

4 0

The fraction is 12/1000 which simplified to 3/250. The percentage is 1.2%.

Bond [772]2 years ago

4 0

Fraction is 12/1000 and the percent is 0.00012

The top person is wrong because he/she moved the decimal to the left but when you find percent, it's suppose to be moved to the right twice.

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Multiple choice question?

nydimaria [60]

Answer:

9* 3 ^ (x-2)

Step-by-step explanation:

g(x) = 3^x

We know a^ (b) * a^(c) = a^ (b+c)

9* 3 ^ (x+2) = 3^2 * 3 ^(x+2) = 3^(2+x+2) = 3^x+4 not equal to 3^x

3*(9^(x+2)) = 3*3^2(x+2) = 3^1 * 3^(2x+4) =3^(2x+4+1) = 3^(2x+5) not equal

9* 3 ^ (x-2) = 3^2 * 3 ^(x-2) = 3^(2+x-2) = 3^x equal to 3^x

3*(9^(x-2)) = 3*3^2(x-2) = 3^1 * 3^(2x-4) =3^(2x-4+1) = 3^(2x-3) not equal

6 0

3 years ago

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3. Mr. James told Jill he would charge her $15 per hour, plus parts, to fix her bicycle.

ad-work [718]

Answer:

512

Solution:

so first you multiply 15 times 32 and get 480 than you add 32 and get 512.

7 0

2 years ago

9.50 One way to evaluate the effectiveness of a teaching assistant is to examine the scores achieved by his or her students on a

EleoNora [17]

Answer:

Step-by-step explanation:

Given that a professor sets a standard examination at the end of each semester for all sections of a course. The variance of the scores on this test is typically very close to 300.

$H_0: s^2 = 300\\H_a: s^2 \neq 300$

(Two tailed test for variance )

Sample variance =480

We can use chi square test for testing of hypothesis

Test statistic = $\frac{(n-1)s^2}{\sigma^2} \\=62.4$

p value = 0.0100

Since p <0.05 our significance level, we reject H0.

The sample variance cannot be claimed as equal to 300.

5 0

2 years ago

Suppose a triangle has two sides of length 33 and 37, and that the angle

marysya [2.9K]

Answer:

c^2=33^2+37^2-2(33)(37)cos120(i don't know for sure tho)

Step-by-step explanation:

LAW OF COSINES

6 0

3 years ago

4/9+3/10= what's the answer please

Marta_Voda [28]

Answer:

67/90

Step-by-step explanation:

no explanation

3 0

2 years ago

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