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irina [24]
3 years ago
9

6x-5y=5 3x+5y=4 The x-coordinate of the solution to this system of equation is

Mathematics
1 answer:
Anna35 [415]3 years ago
3 0

Answer:

x=1

Step-by-step explanation:

1) 6x-5y=5

2) 3x+5y=4

ets perform the following operation

1) +2), This leads to the following equation:

6x+3x-5y+5y=5+4

From where we obtain the solution for x

9x=9

x=1

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Gretchen is using an overhead projector to enlarge a drawing so she can make a poster. The original drawing measures 60 mm wide
podryga [215]
So 60 by 80,
60 <80 so 60=width
she moves it so that width=300
findn height

60:300=80:x
60/300=80/x
muliplyb oth sides by x
60x/300=80
x/5=80
mulitpliy both sides by 5
x=400

the height=400 mm
8 0
3 years ago
What is the sum of the first five prime numbers? 1Read the excerpt from "Ellis Island."
allsm [11]

Answer:

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Step-by-step explanation:

2,3,5,7,11. now the sum is --- 2+3+5+7+11=28

3 0
3 years ago
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pychu [463]

Answer:

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Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
Which description is a correct way to solve the equation below?<br><br> x/5 + 4.3 = 12.4
Gnom [1K]

Solution:

<u>Step-1: Subtract 4.3 both sides.</u>

  • x/5 + 4.3 = 12.4
  • => x/5 + 4.3 - 4.3 = 12.4 - 4.3
  • => x/5 = 8.1

<u>Step-2: Use cross multiplication to find x.</u>

  • x/5 = 8.1
  • => x = 8.1 x 5
  • => x = 40.5

Hence, the value of x is 40.5.

4 0
3 years ago
1 4/9 + 2 6/9 is equal to 4 1/9, true or false?
viktelen [127]

Answer: True

Explanation: To add mixed numbers, first add the fractions.

So here, we have 4/9 + 6/9 which is 10/9.

Then add the whole numbers.

So we have 1 + 2 which is 3.

So our answer is 3 and 10/9.

But notice, that since 10/9 is an improper fraction,

our answer is not in lowest terms.

10/9 can be rewritten as the mixed number 1 and 1/9.

So 3 and 10/9 is the same as 3 + 1 and 1/9 which is 4 and 1/9.

Since 4 and 1/9 is in lowest terms, this is our final answer.

So we can say that 1 and 4/9 + 2 and 6/9 is 4 and 1/9.

8 0
3 years ago
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