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3 years ago

9

A number and it's absolute value are equal. If you subtract 2 from the number, the new number and it's absolute value are not eq

ual. What do you know about the number?

1 answer:

ololo11 [35]3 years ago

7 0

It is one or zero. The absolute value of one is one. If you subtract 2, -1 and one are not equal. Same goes for zero.

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Round .1325 to the nearest thousandths

faltersainse [42]

0.133 because 5 mean you have to round up so it is 0.133

3 0

3 years ago

Read 2 more answers

What is -2 = 5 / (2x+3)

LUCKY_DIMON [66]

Answer:

x = -11/4

Step-by-step explanation:

Given that:

-2 = 5 / (2x+3)

Multiplying both sides by (2x + 3)

-2(2x + 3) = 5

"-" sign will alter the inner signs

-4x -6 = 5

Adding 6 on both sides:

-4x -6 +6 = 5 + 6

-4x = 11

Dividing both sides by -4

-4x/-4 = 11/-4

x = -11/4

i hope it will help you!

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3 years ago

Barty has 70 balloons, and he will pop four of them every second. Fill in the missing information on the table, it relates b, th

Vedmedyk [2.9K]

T b
0 70
1 66
2 62
3 58
4 54

This is not a proportional relationship because the ratios are not equivalent.
1/66 (t/b) is not equivalent to 2/62 (t/b).

4 0

3 years ago

Factorise: a^2 + 8a - 20

REY [17]

Which two numbers add up to <span>88</span><span> and multiply to </span><span>−20?
</span><span>−2</span><span> and </span><span>10
</span>
Rewrite the expression using the above:

Answer:
(a−2)(a+10)<span>
</span>

6 0

3 years ago

Read 2 more answers

pH measurements of a chemical solutions have mean 6.8 with standard deviation 0.02. Assuming all pH measurements of this solutio

aalyn [17]

Answer: 2.14 %

Step-by-step explanation:

Given : pH measurements of a chemical solutions have

Mean : $\mu=6.8$

Standard deviation : $\sigma=0.02$

Let X be the pH reading of a randomly selected customer chemical solution.

We assume pH measurements of this solution have a nearly symmetric/bell-curve distribution (i.e. normal distribution).

The z-score for the normal distribution is given by :-

$z=\dfrac{x-\mu}{\sigma}$

For x = 6.74

$z=\dfrac{6.74-6.8}{0.02}=-3$

For x = 6.76

$z=\dfrac{6.76-6.8}{0.02}=-2$

The p-value = $P(6.74$

$P(z$

In percent, $0.0214\times=2.14\%$

Hence, the percent of pH measurements reading below 6.74 OR above 6.76 = 2.14%

6 0

4 years ago