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soldi70 [24.7K]
3 years ago
12

Does anyone know the answer?

Mathematics
1 answer:
FromTheMoon [43]3 years ago
6 0

Answer:

AB = 4.41

Step-by-step explanation:

→You are given the adjacent side and need to find the hypotenuse. For this, we use cos.

<u>→Set it up, like so:</u>

<u />cos25=\frac{4}{x}

<u>→To get rid of the x in the denominator, multiply everything by x:</u>

<u />x(cos25=\frac{4}{x})

xcos25 = 4

<u>→Divide both sides by cos25:</u>

x = 4.413

<u>→Round to nearest hundredth:</u>

x = 4.41

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The price of a notebook is 20% less than the price of a book. By what percent is the price of the book higher than the price of
TiliK225 [7]

The price of the book is 125% higher than the price of the notebook if the price of a notebook is 20% less than the price of a book.

<h3>What is the percentage?</h3>

It is defined as the ratio of two numbers expressed in the fraction of 100 parts. It is the measure to compare two data, the % sign is used to express the percentage.

Let x is the price of the book

And y is the price of the notebook,

Then,

y = x- 0.20x = 0.80x

x = (1/0.80)y

x = 1.25y

So x is 1.25 or 125% higher than the, y

Thus, the price of the book is 125% higher than the price of the notebook if the price of a notebook is 20% less than the price of a book.

Learn more about the percentage here:

brainly.com/question/8011401

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6 0
2 years ago
Julie recently drove to visit her parents who live 120 miles away. On her way there her average speed was 20 miles per hour fast
mart [117]
40mph average there totaling 3 hours, 60mph back, totaling 2 hours. 5 hours total.
5 0
3 years ago
What is the inverse of f(x)=6x^2
likoan [24]

Answer:

f^-1 (x) = √ 6x/6 - √ 6x/6

Step-by-step explanation:

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8 0
4 years ago
How much of a spice that is 3% salt should be added to 175 ounces of a spice that is 6% salt in order to make a spice that is 5%
Sav [38]

Answer:

Let x represents the ounces of first spice.

From the given statements, you draw a table as shown below:

                           ounces of spice         Percentage           ounces of salt

First spice                 x                              3%                            0.03x

Second spice           175                            6%                          175(0.06)

Final  mixture          x+ 175                         5%                        (x+175)(0.05)

Now, to solve for x;

Final spice = First spice + second spice

0.03x+175(0.06) = (x+175)(0.05)

0.03x + 10.5 = 0.05x + 8.75

Subtract 10.5 on both sides we have;

0.03x + 10.5 -10.5= 0.05x + 8.75-10.5

Simplify:

0.03x= 0.05x -1.75

Subtract 0.05x on both sides;

0.03x - 0.05x= 0.05x -1.75-0.05x

Simplify:

-0.02x= -1.75

Divide both sides by -0.02, we get;

x = 87.5 ounces

Therefore, 87.5 ounces of spices i.e 3% salt should be added to 175 ounces of a spice that is 6% salt in order to make a spice that is 5% salt



4 0
3 years ago
Solve the equation. 9d + 2d + 3d – 4 = 5d
Pavlova-9 [17]
You add 9d+2d+3d which equals to 14d, then you would subtract 14d to each side. After you subtract 14d to each side, it should look like -4=-9d. So your answer should be 4/9=d
4 0
4 years ago
Read 2 more answers
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