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2 years ago

What is -1/2 + (3/4 x 4/9)

Mathematics

2 answers:

fredd [130]2 years ago

7 0

Answer:

-1/6

Step-by-step explanation:

Using the PEMDAS rule, we start with the equation in the parentheses (3/4 x 4/9). 3 X 4 is 12 and 4 X 9 is 36, so the answer is 12/36. You can simplify this to 1/3. -1/2 plus 1/3 can also be written as 1/3 - 1/2. Next you will want to set the denominators equal to each other. In this case, I'll set them both equal to 6.

3 x 2 is 6, and 1 x 2 is 2, turning 1/3 into 2/6.

2 x 3 is 6 and 1 x 3 is 3, turning 1/2 to 3/6.

2/6 - 3/6 equals -1/6

uranmaximum [27]2 years ago

5 0

Answer:

$-\frac{1}{6}$

Step-by-step explanation:

$\frac{3}{4} *\frac{4}{9} =\frac{1}{3}$

$\frac{1}{3} -\frac{1}{2}=-\frac{1}{6}$

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Solve the inequality, <br> x + 6.56 > 25.2

pogonyaev

Answer: x>18.64

Step-by-step explanation:

x+6.56-6.56>25.2-6.56

x>18.64

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2 years ago

After reading a book foe English class, 100 students were asked whether or not they enjoyed it. Nine twenty-fifths of the class

Katena32 [7]

Answer:

The number of students who liked the book was 64.

Step-by-step explanation:

After reading a book for English class, 100 students were asked whether or not they enjoyed it.

Now, given that nine twenty-fifths of the class did not like the book.

So, $\frac{9}{25}$ of the whole class did not like the book.

Then, the fraction of the class who did like the book was $(1 - \frac{9}{25}) = \frac{16}{25}$ .

Therefore, the number of students who liked the book was $(100 \times \frac{16}{25}) = 64$ . (Answer)

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2 years ago

There were 90 runners just start a race in the first half of the race 1/3 of them dropped out in the second half of the race 1/5

Eva8 [605]

Answer:

6 runners finished the race

Step-by-step explanation:

it starts with 90 runners. then 1/3 of them dropped out in the second half of the race, that means you do 90 divided by 3

90 ÷ 3 = 30

Then, 1/5 of the runners remained.

That means you do 30 divided by 5

30÷ 5= 6

so the answer is 6 remaining runners finished the race.

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2 years ago

A standard dartboard has a diameter of 18 in. What is its area to the nearest square inch?

Reptile [31]

The meaning of the area is the measurement of a surface in this case a circle, which can be find by using the formula $A= \pi r^{2}$ , where r is equal to the radius of the circle.

In this exercise is given that the diameter of a standard cardboard is 18 inches or a radius of 9 inches and it is asked to find its area. Therefore, to find the area of the circle you should substitute the value of the radius into the previous mention formula.

$A= \pi r^{2}$
$A= \pi (9 in)^{2}$
$A= \pi (81 in^{2})$
$A=254.47 in^{2}$

The area of the standard dartboard is 254.47 square inches or 254 square inches.

8 0

2 years ago

If A is an obtuse angle and cos A = 3/5, find the values of tan A

slega [8]

Answer:

the value has to be 54.6 and up

Step-by-step explanation:

5 0

3 years ago

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