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marta [7]
3 years ago
10

Y+2x=7 and x=3+y Solve each system of equations using substitution

Mathematics
1 answer:
Alex3 years ago
4 0

Answer:

y+2x=7 (1)

x=3+y (2)

Replace x = 3+y (2) into (1) => y+2(3+y) = 7

=> y = 1/3 and x = 3+1/3 =10/3

Step-by-step explanation:

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Enter an algebraic expression to model the given context. Give your answer in simplest form.
scoray [572]

Answer: p-0.6p

Step-by-step explanation:

60% = 0.6

Discount is 60% of price p = 0.6p

Original price less discount

p-0.6p

4 0
3 years ago
Find the solutions to the equation below.
Volgvan

Answer:

A and C

Step-by-step explanation:

Move all terms to the left side and set equal to zero. Then set each factor equal to zero

4 0
3 years ago
What is the value of the geometric sequence for which a1=10 and r=0.5?
tiny-mole [99]
The formula for an infinite geometric sequence is the following:

S_{∞}= \frac{a_{1}}{1-r}

Just substitute the values of a_{1} and r into the formula.

S_{∞}=\frac{10}{1-0.5}
S_{∞}=\frac{10}{0.5}
S_{∞}= 20

Therefore, the answer is 20.
3 0
3 years ago
6. Which value of x makes the equation below true?<br> 5x - 3 = 11 A. 1.6 B. 2.8 C. 40<br> D. 70
Harlamova29_29 [7]

Answer:

It's B

Step-by-step explanation:

2 times 5 = 10

0.8 times 5=4

10 + 4 =14

14-3=11

8 0
2 years ago
there are 28 books on the shelf.one-fourth of the books are about animals. two are adventure. the rest are mystery.How many book
yanalaym [24]

Answer:

19

Step-by-step explanation:

1/4 are animal. 28/4 = 7

2 are adventure.

7+2 = 9

9 are not mystery

28-9 = 19

19 are mystery.

4 0
3 years ago
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