4 years ago

-6x+9+5x=-6x+9 how many solutions does this equation have

1 answer:

8 0

No solutions. Since when you solve for the variable in this case it would be x. x will equal 0. when you solve for variables. If the final answer is a variable that equals zero then there is no solution.

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Find the solution to the system of equations.

densk [106]

Answer:

x = -2, y = 2

Step-by-step explanation:

-7x + 7y = 28

7y = 28 + 7x

y = 4 + x ----(1)

-8x+4y=24 -----(2)

sub (1) into (2)

-8x+4(4+x)=24

-8x+16+4x = 24

-8x+4x = 24-16

-4x = 8

x = -2

sub x = -2 into (1)

y=4+(-2) = 2

7 0

3 years ago

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Two combines can harvest 320 acres of wheat in a certain amount of time. Assuming all combines work at the same rate, how many a

hoa [83]

2 combines = 320 acres
320/2 = 160 acres per combine
160 * 6 = 960
Answer: 960 acres

Hope this helps!

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3 years ago

Nora is three times the age of Cora. In 5 years time, the sum of their ages will be 38. How old are they?

kiruha [24]

Step-by-step explanation:

x+5=3(x-3)

X+5= 3x-3

x-3x=-3-5

-2x=-8

X= -8/-2

X=4 Answer

4 0

3 years ago

A and B working together complete a work in 35 days. If A takes 60 days to complete it, how long would B alone tale to complete

svp [43]

Answer:

Efficiency (Work done per day) for :

( ˘ ³˘)/

A & B together = 1/35th

A alone = 1/60th

Thus, efficiency of B alone = Total - A’s efficiency

Step-by-step explanation:

OR Efficiency of B alone = (1/35) - (1/60) = 6/210 - 3.5/210 = 2.5/210 = 1/84th

Hence, since B completes 1/84th work daily, he would take 84 days to complete the work alone.

7 0

3 years ago

3 ways to get forty nine

IceJOKER [234]

7 x 7
2 + 47
56 - 7

Hope you needed this!

3 0

3 years ago

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