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2 years ago

How do i explain this problem -5 + (+4) =

Mathematics

2 answers:

RSB [31]2 years ago

7 0

Answer:

this question is essentially -5 + 4

You could say:

negative 5 plus 4

Just in case you need it, the answer to this problem is -1

May I have brainliest please? :)

ANTONII [103]2 years ago

4 0

-5+4
=-5+4
The answer is =-1

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For what value of x is the figure a rectangle?

Anna [14]

Step-by-step explanation:

step 1. 4x + 27 + 3x = 90 (definition of a rectangle)

step 2. 7x = 63 (collect like terms. subtract 27 from both sides)

step 3. x = 9 (divide both sides by 7)

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3 years ago

A sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's p

charle [14.2K]

Answer:

So the value of the test statistic is -0.85.

Step-by-step explanation:

We know that a sample of 1800 computer chips revealed that 53% of the chips do not fail in the first 1000 hours of their use. The company's promotional literature states that 54% of the chips do not fail in the first 1000 hours of their use.

We get that:

$n=1800\\\\p_1=53\%=0.53\\\\p_2=54\%=0.54\\$

We calculate the standar deviation:

$\sigma=\sqrt{\frac{0.53 \cdot (1-0.53)}{n}}=\sqrt{\frac{0.53 \cdot 0.47}{1800}}=0.01176$

We calculate the value of the test statistic:

$z=\frac{p_1-p_2}{\sigma}=\frac{0.53-0.54}{0.01176}=-0.85$

So the value of the test statistic is -0.85.

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3 years ago

What is the answer to 2+5(8-5)=?

VashaNatasha [74]

Answer:

Step-by-step explanation:

2+5(8-5)

2+(5×8)-(5×5)

2 +40-25

42-25

=17

4 0

3 years ago

Read 2 more answers

At noon, the minute and hour hands overlap. In how many hours will they overlap again?

nadya68 [22]

24 hours

Because 24 hours equals 1 day or one rotation of the clock

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3 years ago

If a 30-60-90 right triangle has a hypotenuse 6, what is the length of the short leg?

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Answer:

$\sqrt[3]{3}$

Step-by-step explanation:

use the Pythagoras Theorem

Since you have the hypotenuse (6"), just go backwards. 62 = 36 = a2 + b2.

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3 years ago