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aleksandrvk [35]
4 years ago
12

4. Sundar used linear combination to solve the system of equations shown. He did so by multiplying the first equation by 5 and t

he second equation by another number to eliminate the y-terms. What number did Sundar multiply the second equation by?
2x + 9 = 41
3x + 5y = 36
Mathematics
1 answer:
lesya692 [45]4 years ago
8 0
If he multiplied the first equation by 5, that would give us:

10x + 45y = 205

Now we need to get -45y to eliminate the y-terms, So we divide -45 / 5 and we get -9. So we multiply the 2nd equation by -9.

(I'm assuming the first equation is actually 2x + 9y = 41, and not 2x + 9 = 41)
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HELP SUPER FAST PLS
givi [52]

Answer:

GCF = 5

Step-by-step explanation:

15x² - 10x + 5

x is not contained in all 3 terms thus is not a factor

15 has factors 1, 3, 5, 15

- 10 has factors ± 1, ± 2, ± 5 , ± 10

5 has factors 1, 5

The common factors are 1, 5

Then GCF = 5

6 0
3 years ago
Find how many quarts of 6% butterfat milk and 1% butterfat milk should be mixed to yield 75 quarts of 3% butterfat milk.
Strike441 [17]

Answer:

30 gallons of 6% milk, and 45 gallons of 1% milk.

x=quarts of 6% butterfat

First, write an equation.

0.06x+0.01(75-x)=0.03*75

Multiply both sides by 100.

0.06x*100+0.01*100(75-x)=100*0.03*75

Simplify

6x+75-x=3*75

6x+75-x=225

Solve

5x=225-75=150

5x=150

x=30

75-30=45

So, we need 30 gallons of 6% milk, and 45 gallons of 1% milk.

Step-by-step explanation:

8 0
3 years ago
Simplify 7 • 8 – 9 + 36 ÷ 3 <br> A) 45<br> B) 47<br> C) 57<br> D) 59
Gnoma [55]
D 59. Simple use of order of operations were needed.
6 0
4 years ago
Read 2 more answers
Write and inequality for the following statement: c is less than 6
Talja [164]

In order to solve this exercise you need to remember the following symbols in Inequalities:

1. The meaning of this symbol is "Greater than":

>

2. The meaning of this one is "Less than":

3. The following symbol means "Less than or equal to":

\le

4. And this one means "Greater than or equal to":

\ge

Knowing the above, you can determine that the statement "c is less than 6", can be written as the following inequality:

c

The answer is:

c

7 0
1 year ago
Find two numbers such that one number is 3 less than twice as big as the other number and the two numbers sum to 21.
Hitman42 [59]

Answer:

The two numbers are:

8 and 13

Step-by-step explanation:

a = 2b - 3       Eq. 1

a + b = 21        Eq. 2

Replacing Eq. 1 in Eq. 2:

(2b-3) + b = 21

3b - 3 = 21

3b = 21 + 3

3b = 24

b = 24/3

b = 8

from Eq. 1

a = 2*8 - 3

a = 16 - 3

a = 13

Check:

From Eq. 2:

a + b = 21

13 + 8 = 21

8 0
2 years ago
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