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3 years ago

600% of what number is 4,200

Mathematics

2 answers:

ankoles [38]3 years ago

4 0

Answer: Trust me pleas, 14.29%.

Step-by-step explanation: On my dead moms grave.

d1i1m1o1n [39]3 years ago

3 0

Answer:

700

Step-by-step explanation:

600% of 700 is equivalent to multiplying them:

600% × 700 = ?

600% × 700 =

(600 ÷ 100) × 700 =

(600 × 700) ÷ 100 =

420,000 ÷ 100 =

4,200

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38. Evaluate the expression<br> 52 - (3²+4)

kotykmax [81]

Do parentheses first according to PEMDAS.
3 squared is 9 and add 4 to get 13
Do 52 minus 13 to get 39

8 0

2 years ago

For 3/5=2/3t how do you get t=9/10

lesya [120]

Answer:

Step-by-step explanation:

3/5 = 2/3t......multiply both sides by 3/2...this cancels out the 2/3 on the right side

3/5 * 3/2 = t

9/10 = t

another way to do it is this way...

3/5 = 2/3t......divide both sides by 2/3

(3/5) / (2/3) = t

3/5 * 3/2 = t

9/10 = t

7 0

3 years ago

In a study, researchers wanted to measure the effect of alcohol on the hippocampal region, the portion of the brain responsibl

Anton [14]

Answer:

We do not reject the Null Hypothesis

Step-by-step explanation:

From the question we are told that:

Sample size $n=23$

Population mean $\mu=9.02cm^3$

Sample mean $\=x=8.16$

Standard deviation $\sigma=0.7cm^3$

Significance level $\alpha =0.01$

Generally the Null and and alternative Hypothesis are as follows

$H_0:\mu=9.02cm^3$

$H_a:\mu$

Therefore t critical Value is

$t\ critical\ Value=(\alpha,df)$

$t\ critical\ Value=(0.01,22)$

Where

$df=n-1\\\\df=23-1=>22$

Therefore

From t Table

$t value=-2.8$

Generally the equation for Z Critical is mathematically given by

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

$t=\frac{8.16-9.02}{\frac{0.7}{\sqrt{23} } }$

$t=-5.89$

Therefore

Since the t test statistics is greater than the Critical value

Hence,we do not reject the Null Hypothesis

4 0

3 years ago

After 45 seconds, Camden’s bathtub fills with 3 inches of water. How many seconds will it take to fill Camden’s tub with 20 inch

Pepsi [2]

So you have to find how many seconds it takes to fill up with 1 inch.
TO find that, you have to divide 45/3 which equals to 15.
So it takes 15 seconds for 1 inch. The question is asking you to find out how many seconds will it take to fill the tub with 20 inches.
SO your gonna multiply 15*20.
15*20 = 300
So it would take 300 seconds to fill up Camden's tub.

5 0

3 years ago

Tamara finds the sum of two number cubes rolled at the same time. The chart below shows all possible sums from the 36 possible c

yarga [219]

Answer:

Tamara should expect the sum of the two cubes to be equal to 5 20 times.

Step-by-step explanation:

The sample space of rolling a number cube are:

S = {1, 2, 3, 4, 5, 6}

If two such cubes are rolled together, then the sum of the two cubes will be 5 for the combinations below:

S₁ = {(1, 4), (2, 3), (3, 2) and (4, 1)}

The total number of outcomes will be, N = 36.

Compute the probability that the sum of rolling two numbered cubes as follows:

Let X = number of time the sum of the two numbers on two cubes is 5.

Two numbered cubes are rolled n = 180 times.

The event of getting a sum of 5 in independent of the other results.

The random variable X follows a Binomial distribution with parameters n = 180 and p = .

The expected value of X is:

Compute the expected number of times Tamara expects the sum of the two cubes to be equal to 5 as follow:

Thus, Tamara should expect the sum of the two cubes to be equal to 5 20 times.

6 0

2 years ago