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3 years ago

Can anyone explain to me how to get the answer and what the answer is???

Mathematics

1 answer:

chubhunter [2.5K]3 years ago

4 0

The answer is (3,-5). Hope this helps

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What is the solution to the system of equations?<br><br> y = 2x – 3.5<br><br> x – 2y = –14

iogann1982 [59]

Answer:

Step-by-step explanation:

Substitution then simplify

8 0

3 years ago

How many micrometers long is one edge of a centimeter cube

Alex

10000 micrometers if it is one cenimeter per side

5 0

3 years ago

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The scores for a certain test of intelligence are normally distributed with mean 85 and standard deviation 11. Find the 90th per

jonny [76]

Answer:

99.1 is the 90th percentile of these scores.

Step-by-step explanation:

We are given the following information in the question:

Mean, μ = 85

Standard Deviation, σ = 11

We are given that the distribution of score is a bell shaped distribution that is a normal distribution.

Formula:

$z_{score} = \displaystyle\frac{x-\mu}{\sigma}$

We have to find the value of x such that the probability is 0.90

$P( X < x) = P( z < \displaystyle\frac{x - 85}{11})=0.90$

Calculation the value from standard normal z table, we have,

$P(z \leq 1.282) = 0.90$

Putting values, we get,

$\displaystyle\frac{x - 85}{11} = 1.282\\\\x = 99.1$

Thus, 99.1 is the 90th percentile of these scores.

5 0

3 years ago

If a package of corn chips weighs 1.2 ounces what is the weight in ounces of 48 packages ?

Naya [18.7K]

I'm not usually good at these questions but you can get a calculator that does weight multiplied by units.
so with your question it would be :

1.2 ounces x (48 units)
= 57.6 ounces

57.6 ounces

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3 years ago

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Tell whether (-1,3) is a solution of the inequality whose graph is shown.

pychu [463]

Answer: No.

Reason: (-1, -3) is (x, y) so, let's find -1 on the X scale first. Alright, -1 is in the blue, which is a great start. Now, it's -3 on the Y portion. And when you graph that, it's not in the blue shaded area, so no, it's not a solution. (TIP: Solution is the Shaded Area)

4 0

2 years ago