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3 years ago

9

moinca spent 4/7 hours listening beethtoven and brahms. she spent 2/5 hours listening to beethtoven. how many hours were spent l

istening to brahms?

1 answer:

Makovka662 [10]3 years ago

8 0

He spent 2\2 hours listening to brahms

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-7/9 x 144 vbnbvcrxecvbnbvtcrxercvb

Juli2301 [7.4K]

The first step to solving this expression is to reduce the numbers with 9.
-7 × 16
Now we need to multiply the two numbers together using the Rules of Signs for Multiplication. They state that multiplying a negative and a positive equals a negative: (-) × (+) - (-). Keeping this in mind,, when you multiply the two numbers together you should get -112.
Let me know if you have any further questions
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6 0

3 years ago

Why is it important to consider scale when graphing inequalities?

Olegator [25]

Because to get a straight line you need a scale. Otherwise you will not be able to graph a straight line.

6 0

3 years ago

Edgar is getting better at the game Tetris. On his first game he scored 57 points, then he scores 61 and 65 on his next two game

Svet_ta [14]

Answer: 208 points in total

Step-by-step explanation:

multiply 52(the amount of games) by the rate of change (which is 4)

5 0

2 years ago

The circumference of a circle is 7π m. <br> what is the area

Helen [10]

Answer: <u>38.4845100065m²</u>

<em>when rounded to the nearest tenth: </em><u>38.5m²</u>

<em>when rounded to the nearest hundredth: </em><u>38.48m²</u>

<em>when rounded to the nearest thousandth: </em><u>38.485m²</u>

Step-by-step explanation:

the formula for finding the area of a circle is $A = \pi r^{2}$ , where A = area and r = the radius of the circle.

since you're only given the circumference, we need to calculate the radius of the circle before we can find the area.

to find the radius of a circle, you can either <u>divide the measure of the diameter by 2</u> <em>OR</em> <u>use the formula</u> $r=\frac{C}{2\pi}$ where r = radius and C = circumference.
because there is no given diameter measurement in your question, <u>the best way to find the radius is to use the formula</u> $r=\frac{C}{2\pi}$ .

first, plug the given values into the equation.

since $7\pi$ is the given circumference, plug in $7\pi$ for $C$ .

$r=\frac{C}{2\pi}$ ⇒ $r=\frac{7\pi}{2\pi}$

the equation becomes $r=\frac{7\pi}{2\pi}$ , aka <em>radius equals seven times pi divided by two times pi</em>.

now divide $\frac{7\pi}{2\pi}$ .

$\frac{7\pi}{2\pi} = 3.5$

now we know that the radius of the circle is 3.5 :) since we have this information, we can now solve for the area of the circle using the formula $A = \pi r^{2}$ .

first, plug in $3.5$ for $r$ .

$A = \pi r^{2}$ ⇒ $A = \pi 3.5^{2}$

now multiply $\pi 3.5^2$ , aka <em>pi times three and five tenths squared</em>.

$\pi 3.5^2 = 38.4845100065$ <em>(if needed, you can round this result to the nearest tenth, hundredth, etc.)</em>

<em />

the area of the circle is 38.4845100065m². i hope this helps! have an amazing day <3

<em />

6 0

3 years ago

What is the value of X

Andrews [41]

Answer:

30

Step-by-step explanation:

60+90=150

180-150=30

3 0

3 years ago