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Deffense [45]
2 years ago
15

4x-5y=-2 -8x+10y=4 need work done

Mathematics
2 answers:
bekas [8.4K]2 years ago
3 0

Answer:

use math web because it wont let me enter it

Step-by-step explanation:

Gnom [1K]2 years ago
3 0
4x-5y=-2——1
-8x+10y=4——2
Multiplying equation 1 by -2, we get:
-8x+10y=4——3
As equation 2 and 3 turn out same, the pair of equations have infinitely many solutions. They will cancel out of you add or subtract them.
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Can someone help me out with this ??
nalin [4]

Answer:

1. b > -2

2. x <= 3

Step-by-step explanation:

Question 1:

-2(b + 5) < -6

Divide both sides by -2. Remember to change the inequality sign.

b + 5 > 3

Subtract 5 from both sides.

b > -2

Question 2:

-(x - 10) >= 7

Divide both sides by -1. Remember to change the inequality sign.

x - 10 <= -7

Add 10 to both sides.

x <= 3

6 0
3 years ago
A grapefruit is 8% heavier than an orange, and an apple is 10% lighter than the orange.
likoan [24]
Weight of an grapefruit=weight of an orange+8% weight of an orange
weight of an apple=weight of an orange -10% weight of an orange

a.<span>By what percentage is the grapefruit heavier than the apple?
We should find the connection between grapefruit and an apple. We know the connection between the weight of a grapefruit and an orange, we know the connection between an orange and an apple, so this means we know the connection between a grapefruit and an apple.
</span>
weight of an grapefruit=weight of an <span>orange+8% weight of an orange
</span>weight of an orange=weight of an apple<span> +10% weight of an apple
</span>
-> weight of an grapefruit=weight of an apple+10% weight of an apple + 8%(weight of an apple+10% weight of an apple)= weight of an apple + 18% weight of an apple + 2% weight of an apple= <span>weight of an apple + 20% weight of an apple 

</span><span>b.By what percentage is the apple lighter than the grapefruit?
</span>weight of an grapefruit=weight of an apple + 20% weight of an apple<span> 
</span>
-> The apple ts 20% lighter than the grapefruit.
8 0
2 years ago
Read 2 more answers
In triangle ABC shown find BC.
Sonja [21]

Answer:

BC is just 3d+7??

Step-by-step explanation:

4 0
2 years ago
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2[3(4^2 +1)] - 2^3.
Sav [38]

Answer:

94

Step-by-step explanation:

Do parentheses first, exponents inside them first. 4^2 = 16, + 1 is 17, then multiply by the 3 outside to get 51, then multiply by the 2 outside that to get 102, - 2^3 which is -8 = 94

7 0
3 years ago
What happens if 0 is one of the coordinates?
aleksandrvk [35]

Answer:

Its is just 0

Step-by-step explanation:

3 0
3 years ago
Read 2 more answers
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