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3 years ago

Is 26,341 divisible by 3?

2 answers:

7 0

To find if a number is a divisible by 3, follow this process:

Add all the digits up.

2 + 6 + 3 + 4 + 1 = 16

16 is not divisible by 3.

Therefore, 26,341 is NOT divisible by 3.

shepuryov [24]3 years ago

3 0

No. 26,341 is not evenly divisible by 3 .

Here's the trick you can use to decide this
just by looking at a big number:

==> If a number is divisible by 3, then the
sum of its digits is divisible by 3.

I've never taken the trouble to figure out why this works,
but it does work. I didn't make it up. It's widely known.

So let's look at 26,341 .

The sum of the digits is (2 + 6 + 3 + 4 + 1) = 16 .

16 is not divisible by 3 , so 26,341 is not divisible by 3 .

Is that cool or what !

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The sale price of a laptop bag is $35.00. This is 80% of the original price.

Marrrta [24]

Answer:

43.75 was the original price of the laptop bag

Step-by-step explanation:

according to question

X of 80% = 35

X x 80/100 = 35

X = (35x 100)/80

X = 43.75 dollars

8 0

3 years ago

The ratio of men to women working for a company is 3 to 4. If there are 112 employees total, how many work for the company

Ksenya-84 [330]

Answer:

112

Since you stated 112 employees work for the company, and your question was how many work for the company, it is definetly

112.

6 0

4 years ago

Read 2 more answers

Can someone please help me with 5 and 6(Best answer = Brainliest)

Alex_Xolod [135]

5.
First plug the value of x into the equation
$2(-2y-12)+y=9$
then solve for y
$2(-2y)+2(-12)+y=9 \\ -4y+(-24)+y=9 \\ -4y-24+y=9 \\ -3y-24=9 \\ -3y=33 \\ \frac{-3y}{-3}= \frac{33}{-3} \\ y = -11$

6. Do the same steps
$5(-y-1)+y=-13 \\ 5(-y)+5(-1)+y=13 \\ -5y+(-5)+y=13 \\ -5y-5+y=13 \\ -4y-5=13 \\ -4y=18 \\ \frac{-4y}{-4}= \frac{18}{-4} \\ y=-4.5$

8 0

3 years ago

Suppose we want to see if American children have higher levels of cholesterol than the average child (i.e., in the entire world

lina2011 [118]

Answer:

$t=\frac{201-190}{\frac{10}{\sqrt{25}}}=5.5$

$p_v =P(t_{(24)}>5.5)=0.00000589$

If we compare the p value and the significance level given $\alpha=0.05$ we see that $p_v$ so we can conclude that we have enough evidence to reject the null hypothesis, and we can conclude that the true mean is higher than 190

Step-by-step explanation:

Data given and notation

$\bar X=201$ represent the mean

$s=10$ represent the sample standard deviation for the sample

$n=25$ sample size

$\mu_o =190$ represent the value that we want to test

$\alpha=0.05$ represent the significance level for the hypothesis test.

t would represent the statistic (variable of interest)

$p_v$ represent the p value for the test (variable of interest)

State the null and alternative hypotheses.

We need to conduct a hypothesis in order to check if the mean is higher than 190, the system of hypothesis would be:

Null hypothesis: $\mu \leq 190$

Alternative hypothesis: $\mu > 190$

If we analyze the size for the sample is < 30 and we don't know the population deviation so is better apply a t test to compare the actual mean to the reference value, and the statistic is given by:

$t=\frac{\bar X-\mu_o}{\frac{s}{\sqrt{n}}}$ (1)

t-test: "Is used to compare group means. Is one of the most common tests and is used to determine if the mean is (higher, less or not equal) to an specified value".

Calculate the statistic

We can replace in formula (1) the info given like this:

$t=\frac{201-190}{\frac{10}{\sqrt{25}}}=5.5$

P-value

The first step is calculate the degrees of freedom, on this case:

$df=n-1=25-1=24$

Since is a one side test the p value would be:

$p_v =P(t_{(24)}>5.5)=0.00000589$

Conclusion

3 0

3 years ago

AAAAAAAAAAAAAAAAAAAAAAA wdjewkhfewhjfuhegkufygqe ANSWER

nikklg [1K]

Answer:

(8+t)^2-6 when t=2

Step-by-step explanation:

1: (8+2)^2-6

2: (10)^2-6

3: 100-6

4: 94

6 0

3 years ago