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katrin [286]
3 years ago
13

If

{1}{7} x +\frac{1}{3} y=4" alt="\frac{1}{7} x +\frac{1}{3} y=4" align="absmiddle" class="latex-formula">, then what does 3x + 7y equal?
A.) 21
B.) 84
C.) -21
D.) 10
Mathematics
2 answers:
NemiM [27]3 years ago
6 0
B is the answer to the question
Y_Kistochka [10]3 years ago
4 0
B would be the answer html bit
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How do I solve equations with fractions?
ratelena [41]

2y - 3/5 = 1/2

  • Add 3/5 to both sides.

2y = 1/2 + 3/5

  • Let's make the two fractions have common denominators.
  • Multiply 1/2 by 5/5 and 3/5 by 2/2.
  • 1/2 * 5/5 = 5/10
  • 3/5 * 2/2 = 6/10

2y = 5/10 + 6/10

Add the two fractions.

2y = 11/10

Divide both sides by 2.

  • 11/10 ÷ 2
  • Use the Keep, Change, Flip method.
  • Keep 11/10, change ÷ to ×, and flip the 2 (reciprocal).
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y = 11/20

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3 years ago
What is “2 1/2 x 3 1/3”
lesya692 [45]

Answer:

The answer is 8.3 bar notation.

Step-by-step explanation:

2 1/2 into improper is 5/2

3 1/3 into improper is 10/3

Now Multiply

5/2 x 10/3 is 300/36

Now Reduce.

25/3 = 8.3 bar notation

Mark Brainliest!

3 0
2 years ago
Read 2 more answers
Floyd caught a fish that weighed 2/3 of a pound. Kira caught a fish that weighed 7/8 of a pound. Which fish weighed more.
sashaice [31]
The 7/8 pound fish.

2/3lb = 0.6666 lb
7/8lb = 0.875 lb
3 0
4 years ago
What is 100,000times<br> 1 / 100,000 , using the standard method of multiplication?
Gelneren [198K]
Answer: 100,000.

Explanation: im sorry but thats way too many zeroes for me to write if you want the standard method lol
4 0
3 years ago
Hey can you please help? I am struggling a lot don’t know how to solve this
Ket [755]

Answer:

64.8

Step-by-step explanation:

Pythagoreon Theroem

a^2 + b^2 = c^2  in  this situation it would actually be the opposite, seeing where the "x" is (on a leg) c^2 - b^2 = a^2. First  take the square of 67 and 17

67 squared is 4489 and 17 squared is 289 then  subtract both results

4489-289 = 4200 take the square root of this number

64.8074  (Round to the tenths 64.8)

8 0
3 years ago
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