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zmey [24]
3 years ago
5

Solve the equation. Enter the number only. 4/7z + 2/3z = 13

Mathematics
2 answers:
Katena32 [7]3 years ago
8 0

Answer:

z = 10.5

Step-by-step explanation:

(4/7)z + (2/3)z = 13

multiply by 21 to eliminate the fractions

12z + 14z = 273

26z = 273

Divide both sides by 26

z = 10.5

prohojiy [21]3 years ago
6 0

Answer:

10.5

Step-by-step explanation:

common denominator for 7z and 3z is 21z

4/7z = 12/21z

2/3z = 14/21z

12/21z + 14/21z = 13

26/21z = 13

cross-multiply to get:

26z = 273

z = 273/26

z = 10.5

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-2(3y - 6) + 4(5y - 8) = 92
Whitepunk [10]

Answer:

y = 8

Step-by-step explanation:

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3 0
3 years ago
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Marina has 2.5 lb of cashews. she puts 6 oz in a bag and gives the bag to her brother. what weight of cashews does marina have l
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4 0
4 years ago
Multiply (x-4)(2x+3) using FOIL method. Select the answer choice showing the FOIL method products
VARVARA [1.3K]
I would say C!

(x-4)(2x+3)
x times 2x
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4 0
4 years ago
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Step-by-step explanation:

7 0
4 years ago
What is the exact quotient for 1/4 ÷ 5/8 plz help me
Black_prince [1.1K]
1/4÷5/8
Rule: Before you divided it which you can not do with the fractions, we just need to change the divided sign to multiply sign and then reciprocal 5/8 into 8/5. Then,
1/4÷5/8
=1/4×8/5
=8/20
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4 0
3 years ago
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