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mina [271]
3 years ago
15

Use the common denominator to find -2/3 + -4/5​

Mathematics
1 answer:
Svetlanka [38]3 years ago
5 0

Answer:

-22/15

Step-by-step explanation:

Okay, so, find a common multiple of 3 and 5. best way to find one is to multiply them. 3 x 5= 15. Now you have to make the numerators equivalent.

-2/3 = -10/15

-4/5 = -12/15

-10+-12=-22

Answer:-22/15

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Simplify the expression by combining like terms:<br><br> 4n+4(2n+3)
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First, you do the distributive property on:

4(2n+3)

You would get

8n+12

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4n+8n+12

Combine like terms

12n+12 is the answer
7 0
3 years ago
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What is the slope for y = 2x + 5
Crank
Answer: 2

(The slope is always the coefficient of the independent variable, in this case x . The slope is therefore 2.)
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If a circle has a Diameter of 4m and a Radius of 4 units. Then what is Circumference and Area of the circle?
Fiesta28 [93]

Answer & Step-by-step explanation:

Circumference=d\pi \\Area=r^2\pi

The diameter of the circle is 8 m and the radius of the circle is 4 units. So, now we have to plug in the numbers so we can find the circumference and the area of the circle.

Circumference=(8)\pi

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So, the circumference of the circle is 25.12 m.

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So, the area of the circle is 50.24 units².

3 0
4 years ago
I need some help with this question on my homework i would appreciate it if your could help me, the question is...
slavikrds [6]
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5 0
3 years ago
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Maddy has a bag of 36 marbles. The probability of picking green is 1 in 2, the probability of picking red is 1 in 3, and the pro
KonstantinChe [14]

Answer:  1 in 18

This is the same as writing the fraction 1/18

==============================================================

Explanation:

Since she has 36 marbles total, and the probability of picking green is 1 in 2, this means (1/2)*36 = 18 marbles are green.

Then she also has (1/3)*36 = 12 red marbles and (1/9)*36 = 4 blue marbles.

So far, that accounts for 18+12+4 = 34 marbles in all. That leaves 36-4 = 2 marbles left over that must be black, as it's the only color left.

From that, the probability of choosing a black marble is 2/36 = 1/18.

There's a 1 in 18 chance of Maddy picking a black marble.

1/18 = 0.0556 = 5.56% approximately

7 0
3 years ago
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