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Marat540 [252]
4 years ago
11

What is the answer to -5x+5y=-10 and 3x-3y=5 using substitution

Mathematics
1 answer:
IceJOKER [234]4 years ago
7 0

Answer:

for the 1st one the answer is x= 3 y=1 and the second one is x= 5 and y = 3 and 1/3

Step-by-step explanation: so basically for the first one -5 times x which is 3 is -15 right? and then 5 times y which is 1 is 5 right so -15 plus 5 = -10

second one is x = 5 and y = 3 and 1/3 because 5*x which is 5 is = to 15 right? and then 3 times y which is equal to 3 and 1/3 is equal to 10 which when you do 15-10 in pretty sure it equals 5 correct me if im wrong

Hope this helps xD ;)

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Factor the expression 2x^2-5x-3
adell [148]

Answer:

(2x+1)(x-3) is the factorized form of the given expression

Step-by-step explanation:

=2x^2-5x-3

By using sum and product rule

=2x^2-6x+1x-3

By taking common

=2x(x-3)+1(x-3)

=(2x+1)(x-3)

I hope this will help you :)

5 0
3 years ago
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What is the length of DE?
miskamm [114]

Answer:

11

Step-by-step explanation:

If two chords intersect in a circle, the product of the lengths of the segments of one chord equal the product of the segments of the other.

AC *CB = CD CE

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4 * 6 = 8 *CD

24 = 8 CD

Divide each side by 8

24/8 = CD

3 = CD

We want the length DE

DE = CD + CE

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DE = 11

5 0
3 years ago
On a particular map, 1 inch represents an actual distance of 2.5 miles. the actual area of a lake is 12 square miles. find the a
Anton [14]
We have that
scale factor=1 in/2.5 miles
<span>the actual area of a lake is 12 square miles

</span>we know that
[area on the map]=[scale factor]²*[area actual]
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the answer is
1.92 in²

5 0
4 years ago
There are 12 bags of apples on a market stall.
Mariana [72]

Answer:

The number of apples in the 12 bag is 96

Solution:

Given that, there are 12 bags of apples on a market stall.  

The mean number of apples in each bag is 8.  

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The mean of "n" observations is given as:

Hence, there are 96 apples in 12 bags.

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3 years ago
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Marysya12 [62]

Answer:

Step-by-step explanation:

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4 years ago
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