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2 years ago

What is 5-(-6)= can someone pls help me

Mathematics

2 answers:

m_a_m_a [10]2 years ago

7 0

Since the negatives cancel out, the answer is 11.

babunello [35]2 years ago

3 0

Since there are two minus signs, this equation becomes "5+6" which equals 11.

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Emile Zola is a senior manager for Timber Eye Industries in California. After his annual performance review, he receives a merit

vazorg [7]

Answer:

=5803.28$ and 1760.99 $

Step-by-step explanation:

Given that Emile Zola, a senior Manager for Timber eye industries in California got a merit raise of 7.25% and cost of living 2.2%

Total increase in percent = $7.25+2.2=9.45%$

After rise Emile salary is 87609.50 $

Let Emile salary -- 100

RIse -- 9.45

Salary after rise -- 109.45

THus we get if 109.45 is raised salary then merit increase =7.25

Hence for 87609.50, merit increase = $\frac{7.25(87609.5)}{109.45} =$ =5803.28$

Similarly we have cost of living increase=

= $\frac{2.2(87609.5)}{109.45} =1760.99$

3 0

2 years ago

A city planner wants to estimate the average monthly residential water usage in the city. He selected a random sample of 100 hou

hodyreva [135]

Answer:

The 90% confidence interval for the average monthly residential water usage for all households in this city is between 4401.3 gallons and 4598.7 gallons.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.9}{2} = 0.05$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.05 = 0.95$ , so $z = 1.645$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

$M = 1.645*\frac{600}{\sqrt{100}} = 98.7$

The lower end of the interval is the sample mean subtracted by M. So it is 4500 - 98.7 = 4401.3 gallons

The upper end of the interval is the sample mean added to M. So it is 4500 + 98.7 = 4598.7 gallons

The 90% confidence interval for the average monthly residential water usage for all households in this city is between 4401.3 gallons and 4598.7 gallons.

4 0

2 years ago

Which angle determines whether or not quadrilateral SVUT is a trapezoid? What measure would the angle need to be for SVUT to be

Lorico [155]

Answer: The answer is ∠TUV.

Step-by-step explanation: Given in the question a quadrilateral SVUT with ∠SVU = 112°. We need to determine the angle whose measure will decide whether or not the quadrilateral SVUT is a trapezoid.

We know that for a quadrilateral to be a trapezoid, we need only one condition that one pair of opposite sides must be parallel.

So, in quadrilateral SVUT, since the measure of ∠SVU is given, so we can decide it is a trapezoid or not if we know the measure of ∠TUV. As ST and UV cannot be parallel, so its meaningless to determine ∠TSV.

For SV and TU to be parallel to each other, we need

∠SVU + ∠TUV = 180° (sum of interior alternate angles).

Therefore,

∠TUV = 180° - 112° = 68°.

Thus, we need to determine ∠TUV and its measure shoul be 68°.

7 0

2 years ago

It take Zoe 12.5 minutes to swim 20 laps around the pool what is Zoe's unit rate

allochka39001 [22]

1.6 min. per lap
All you have to do is divide 20 by 12.5

6 0

2 years ago