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I am Lyosha [343]
3 years ago
10

1 /3 − (−1 /5 ) a. -1/2 b. 1/4 c. 2/15 d. 8/15

Mathematics
2 answers:
Alexandra [31]3 years ago
8 0

Answer:

D. 8/15

Step-by-step explanation:


Nadya [2.5K]3 years ago
7 0

Hello there! :)

<u><em>Answer:</em></u>

<u><em>8/15</em></u>

<u><em>*The answer must have a fraction.*</em></u>

Step-by-step explanation:

First, apply by the rule of fractions.

\frac{1}{3}+\frac{1}{5}

Then, multiply by the numbers from numerator to denominator.

5*3=15

3*1=3

\frac{5}{15}+\frac{3}{15}

When if denominator are equal, it combine the fraction.

\frac{5+3}{15}

And finally add by the numbers on numerator.

5+3=8

Answer: =\frac{8}{15}

Hope this helps!

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Which shows the following expression using positive exponents?
8_murik_8 [283]
The negative exponents that are in the numerator pass to positive if the base is moved to the denominator, and the negative exponents that are in the denominator pass to positive if the base is moved to the numerator.

The the answer is the option B: xx^4 / y^2 y^6
3 0
3 years ago
Identify the property demonstrated: 43 • 47 = 43+7 A. Product of Powers Property B. Quotient of Powers Property C. Power of a Pr
N76 [4]

Answer:

I think the answer is A

Step-by-step explanation:

So sorry if the answer is incorrect

3 0
3 years ago
HELP PLZ<br><br> 7k + 4s = 20<br> -8k + 2s = 10<br><br> What is the value of k?
Finger [1]
Divide 20 by 4=5
then 5 by 7=5/7

k=5/7
8 0
3 years ago
Chris Christina collects stamps she is 47 stamps and all she has 20 from Europe the number of African stamps is 2 times the numb
AVprozaik [17]

Answer:

Step-by-step explanation:

Let x represent the number of stamps from Europe.

Let y represent the number of stamps from Africa.

Let z represent the number of stamps from Asia.

She has 47 stamps in all. This means that

x + y + z = 47 - - - - - - - - - - - 1

The number of African stamps is 2 times the number of Asian stamps. This means that

y = 2z

She has 20 stamps from Europe. Therefore, substituting x = 20 and y = 2z into equation 1, it becomes

20 + 2z + z = 47

3z = 47 - 20 = 27

z = 27/3 = 9

y = 2z = 2 × 9

y = 18

She has 20 stamps from Europe, 18 stamps from Africa and 9 stamps Asia.

7 0
3 years ago
Would you please help me solve for x it should be a degrees but I’m not sure what it is
Leno4ka [110]

Answer:

x=15º

Step-by-step explanation:

A triangle's angles add up to 180º.

∠A=30º

∠C=180º-45º

∠B=xº

To find ∠B we have to first find ∠C.

Since ∠C does not have an angle, knowing that a straight line is 180º we can subtract it from 45º to find ∠C.

180-45=135

∠C=135º

Now add ∠A and ∠C.

30+135=165

Subtract the sum from 180º

180-165=x

x=15º

Hope this helps :)

6 0
2 years ago
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