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3 years ago

How can we tell if a number is divisible by 4

Mathematics

2 answers:

Elza [17]3 years ago

7 0

Answer: You take the last two digits of the original number and see if they are divisible by 4.

Step-by-step explanation: Take your original number and find the last two digits. If they are divisible by 4, then the original number is divisible by 4.

DedPeter [7]3 years ago

3 0

<u>Answer:</u>

Check the last two digits of the number, if they are divisible by 4 then the entire number is divisible by 4.

<u>Solution:</u>

To check if a number is divisible by 4, there are certain rules.

If a number has more than 2 digits the way to check if it is divisible by 4 is;

Check the tens and ones place, if the last two digits are divisible by 4 then the entire number is divisible by 4.

Also if the tens digit is even then the ones place has to be 0, 4, 8. But if the tens digit is odd then the ones digit must either be 2 or 6.

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A manufacturer of banana chips would like to know whether its bag filling machine works correctly at the 436.0 gram setting. It

Vilka [71]

Answer:

We conclude that the machine is under filling the bags.

Step-by-step explanation:

We are given the following in the question:

Population mean, μ = 436.0 gram

Sample mean, $\bar{x}$ = 429.0 grams

Sample size, n = 40

Alpha, α = 0.05

Population standard deviation, σ = 23.0 grams

First, we design the null and the alternate hypothesis

$H_{0}: \mu = 436.0\text{ grams}\\H_A: \mu < 436.0\text{ grams}$

We use one-tailed(left) z test to perform this hypothesis.

Formula:

$z_{stat} = \displaystyle\frac{\bar{x} - \mu}{\frac{\sigma}{\sqrt{n}} }$

Putting all the values, we have

$z_{stat} = \displaystyle\frac{429 - 436}{\frac{23}{\sqrt{40}} } = -1.92$

Now, $z_{critical} \text{ at 0.05 level of significance } = -1.64$

Since,

$z_{stat} < z_{critical}$

We reject the null hypothesis and accept the alternate hypothesis. Thus, we conclude that the machine is under filling the bags.

8 0

3 years ago

Manny and Emma are entering a long jump competition at their school. Manny can jump 4/5 of the distance Emma can jump. Manny can

valina [46]

50 inches 4/5*x=40

x=40/(4/5)

x=40*5/4=200/4=50 x=50 inches

5 0

3 years ago

Dana is buying Grandparents' Day gifts at the mall. She spends $13.75 on a teacup for her grandmother. She spends 4/5 of that on

marysya [2.9K]

The total money Dana spent in all is $24.75

<h3>Ratio and proportions</h3>

Ratio are written as fractions of two integers. For instance a/b.

Amount spent for grandmother = $13.75

Amount spent on grand father = 4/5 * 13.75

Amount spent on grand father = $11

Take the sum

Total money spent = $13.75 + $11

Total money spent = $24.75

Hence the total money Dana spent in all is $24.75

Learn more on proportion here: brainly.com/question/19994681

#SPJ1

7 0

2 years ago

PLEASE HELP ME MY DAD WILL KILL ME IF I FAIL

Travka [436]

The answer is 25

Step-by-step explanation:

We know that all the angles of a triangle add up to 180 degrees.

If J = L then L = J so they will both equal 50 cut in half is 25

i hope this helps:)

3 0

3 years ago

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Find cos0 where 0 is the angle shown. Give an exact value, not a decimal approximation.

bogdanovich [222]

Answer:

cos(∅) = 3/5

Step-by-step explanation:

cos(∅) = adjacent/hypotenuse

We don't know what the hypotenuse is so we gotta use Pythagorean theorem to find it.

a² + b² = c²

4² + 3² = c²

√(4² + 3²) = c

c = 5 , this is our hypotenus

cos(∅) = adjacent/hypotenuse

cos(∅) = 3/5

8 0

3 years ago

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