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3 years ago

What two integers have a sum of zero and why

Mathematics

1 answer:

pantera1 [17]3 years ago

4 0

Answer:

The number 0 is called the additive identity because when you add it to a number, the result you get is the same number.

Step-by-step explanation:

Example : 3 + (-3) = 0

Hope this helps!! :))

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A carpenter is making doors that are 20582058 millimeters tall. If the doors are too long they must be trimmed, and if they are

melamori03 [73]

Answer:

Z= 0.253

Z∝/2 = ± 1.96

Step-by-step explanation:

Formulate the null and alternative hypotheses as

H0 : u1= u2 against Ha : u1≠ u2 This is a two sided test

Here ∝= 0.005

For alpha by 2 for a two tailed test Z∝/2 = ± 1.96

Standard deviation = s= 15

n= 10

The test statistic used here is

Z = x- x`/ s/√n

Z= 2058- 2046 / 15 / √10

Z= 0.253

Since the calculated value of Z= 0.253 falls in the critical region we reject the null hypothesis.

There is evidence at the 0.05 level that the doors are too short and unusable.

7 0

3 years ago

Lkn f.vwjn kowqnbvkjejwajvj dnrwjojni Helpppp.

chubhunter [2.5K]

The equation is 18+2.50h=12+3.75h

The total cost of the services will be equal at 4.8 Hours

4 0

3 years ago

In a sample of 150 cars, 18 cars failed a safety inspection. The sampling method had a margin of error of 0.02

mestny [16]

Answer:

(Lower limit, Upper limit) = (0.10, 0.14)

(Lower limit, Upper limit) = (10%, 14%)

Step-by-step explanation:

Total number of cars = 150

Cars that failed the safety inspection = 18

The proportion is given by

p = 18/150

p = 0.12

p = 12%

The confidence interval is given by

p ± margin of error

Where margin of error is 0.02

0.12 ± 0.02

Lower limit = 0.12 - 0.02

Lower limit = 0.10

Lower limit = 10%

Upper limit = 0.12 + 0.02

Upper limit = 0.14

Upper limit = 14%

(Lower limit, Upper limit) = (0.10, 0.14)

(Lower limit, Upper limit) = (10%, 14%)

7 0

3 years ago

I’m thinking of two numbers. Their greatest common factor is 6. Their least common multiple is 36. One of the numbers is 12. Wha

Elden [556K]

The number of all divisors of 6 <span>
6 multiples of the number 18 we find one of
so the answer is 18
</span>

5 0

3 years ago

Read 2 more answers

Earth’s surface is approximately 70% water. There is no water on the surface of Mars, and its diameter is roughly

Pie

Answer:

Earth

Step-by-step explanation:

You don't need scientific notation.

The areas of similar figures are proportional to the square of their linear scale factor. If Mars is 1/2 the diameter of Earth, its total surface area is (1/2)² = 1/4 that of Earth.

That is, the land area of Mars is 25% of the total area of Earth.

The land area of Earth is 1-70% = 30% of the total area of Earth. 30% is more than 25%.

Earth has more land area than Mars.

8 0

3 years ago

What two integers have a sum of zero and why​

What two integers have a sum of zero and why