2 years ago

When a number is decreased by 8 percent the result is 79 what is the original number to the nearest tenth

Mathematics

1 answer:

trapecia [35]2 years ago

8 0

Good morning good luck

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Find the indicated length or angle measure (to the nearest tenth).

skad [1K]

SOLUTION

Given the question in the image, the following are the solution steps to answer the question.

STEP 1: Explain the formula to use

Using the cosine rule which states that:

$z^2=x^2+y^2-2xy\cos Z$

STEP 2: Write the given sides

$x=4,y=6,Z=41^{\circ},z=?$

STEP 3: Find the value of z

$\begin{gathered} By\text{ substitution,} \\ z^2=4^2+6^2-2(4)(6)\cos41 \\ z^2=16+36-48cos41 \\ z^2=52-36.22605985 \\ z^2=15.77394015 \\ z=\sqrt{15.77394015} \\ z=3.971641997 \\ z\approx4.0 \end{gathered}$

Hence, the indicated length is 4.0

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1 year ago

99 + 81 = 9(11 help eeeeeeeeeeeeeeee

Leokris [45]

Answer:

180?

Step-by-step explanation:

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2 years ago

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Illusion [34]

Answer:

y = e^x

Step-by-step explanation:

The fastest way to do this is to use a graphing calc or an online graphing platform and check to see which graph matches the one given.

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3 years ago

How can you tell before you divide 425 by 9 that the first digit of the quotient is in the tens place

zalisa [80]

Yes is in the tens place

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3 years ago

Henry measured a line to be 7.8 inches long. If the actual length of the line is 7.4 inches, then what was the percent error of

Margarita [4]

The percent error of the measurement is 5.4%

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2 years ago