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3 years ago

Using the slope and the y-intercept graph the line represents by the following equation then select the correct graph 2y + 4 =0

Mathematics

1 answer:

dybincka [34]3 years ago

8 0

Answer:

Step-by-step explanation:

2y + 4 = 0 <em>subtract 4 from both sides</em>

2y = -4 <em>divide both sides by 2</em>

y = -2

The slope-intercept form of an equation of a line:

y = mx + b

m<em> - slope</em>

b<em> - y-intercept → (0, </em><em>b</em><em>)</em>

In the equation

y = -2

<em>slope: </em><em>m = 0</em>

<em>y-intercept: </em><em>b = -2 → (0, -2)</em>

<em />

<em>y = -2 - it's a horizontal line</em>

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The length of a rectangle measures 5/8 of a foot. The width of the rectangle measures 2 1/2 feet. What is the area of the rectan

ehidna [41]

Answer:

1 9/16 square feet or 1.5625 square feet

Step-by-step explanation:

Area of a rectangle is Length x Width

First convert 2 1/2 into a number that is just a fraction.

2 = 4/2 so 4/2 + 1/2 = 5/2

Now you can multiply the two fractions to find the area.

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2 years ago

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Solve for x. Evaluate and round your answer to 1 decimal place(tenths place). 10x=1200

Mandarinka [93]

Answer:

Step-by-step explanation:

<u>To solve first take logarithm to both sides</u>

That's

But

So we have

$x = log_{10}(1200)$

<u>Write 1200 as a number with the factor 100</u>

That's

1200 = 100 × 12

So we have

<h3> $x = log_{10}(100 \times 12)$ </h3>

<u>Using the rules of logarithms</u>

That's

<h3> $log_{a}(x \times y) = log_{a}(x) + log_{a}(y)$ </h3>

Rewrite the expression

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Hope this helps you

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3 years ago

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suter [353]

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3 years ago

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3 years ago

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Three potential employees took an aptitude test. Each person took a different version of the test. The scores are reported below

emmasim [6.3K]

Answer:

Tera had the higher z-score, so she should be offered the job.

Step-by-step explanation:

Z- score:

In a set with mean $\mu$ and standard deviation $\sigma$ , the zscore of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the pvalue, we get the probability that the value of the measure is greater than X.

In this problem:

Whoever has the higher z-score should get the job.

Brittany:

Scored 88.3, mean 63.1, standard deviation 14. So

$Z = \frac{X - \mu}{\sigma}$

$Z = \frac{88.3 - 63.1}{14}$