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3 years ago

I need help with this problem

Mathematics

2 answers:

vovangra [49]3 years ago

8 0

I'm pretty sure its length x height so the answer is 18.75.

nataly862011 [7]3 years ago

8 0

Answer:

12.5

Step-by-step explanation:

Area of Trapezium = 1/2 ( A + B ) × H

A = 2.5

B = 7.5

H = 2.5

1/2 ( 2.5 + 7.5 ) × 2.5=

1/2 ( 10 ) × 2.5=

5 × 2.5 = 12.5

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galben [10]

6+ 4×whatever y equals +9

3 0

3 years ago

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Obasi earns 150%, percent of his regular hourly wage while working overtime. What fraction of his regular hourly wage does Obasi

hammer [34]

Obasi earns 150% of his regular hourly wage while working overtime.

Let us convert percentage into fraction first:

To convert a percentage into fraction we need to use the following formula:

a% $=\frac{a}{100}$

Here, he earns 150% of his hourly wage while working overtime:

So,

150%= $=\frac{150}{100} =\frac{3}{2} =1.5$

Obasi earns $\frac{3}{2}$ of his hourly earnings or 1.5 times of his hourly earnings while working overtime.

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3 years ago

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Explain how to model the division of –24 by –4 on a number line.

lianna [129]

Answer:

Here's one way to do it.

Step-by-step explanation:

-24 ÷ (-4)

-24 is the final number on the number line

-4 means you count by 4s on the number line moving backwards.

Start at 0 facing forward.
Move backwards in steps of four units from 0 to -24.
Count the number of steps you took (six).

Answer: +6 (The sign is + because you are still facing forward).

8 0

3 years ago

In this exercise, we are conducting many hypothesis tests to test a claim. Assume that the null hypothesis is true. If 400 tests

Brums [2.3K]

Answer:

Since the null hypothesis is true, finding the significance is a type I error.

The probability of the year I error = level of significance = 0.05.

so, the number of tests that will be incorrectly found significant is computed as follow: 0.05 * 100 = 5

Therefore, 5 tests will be incorrectly found significant given that the null hypothesis is true.

3 0

3 years ago

Please assist me with this problem

Nimfa-mama [501]

Answer:

d. about 50 times larger

Step-by-step explanation:

The given expressions for magnitude (M) can be solved for the intensity (I). Then the ratio of intensities is ...

$\dfrac{I_2}{I_1}=\dfrac{I_0\cdot 10^{M_2}}{I_0\cdot 10^{M_1}}=10^{M_2-M_1}=10^{4.2-2.5}\\\\=10^{1.7}\approx 50$

The larger earthquake had about 50 times the intensity of the smaller one.

8 0

3 years ago