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VARVARA [1.3K]
3 years ago
9

X+2y=8 x-2y=-4 solve by system of equations

Mathematics
1 answer:
Vsevolod [243]3 years ago
3 0

Answer:

Step-by-step explanation:

x + 2y = 8 -----------(I)

x - 2y  = -4 -----------(II)

Add equation (I) & (II) and thus y will be eliminated and we can get the value of 'x'

(I)           x + 2y = 8

(II)          <u>x - 2y  = -4</u><u>      </u>{Now add}

           2x         = 4

                   x   = 4/2

x = 2

Substitute x =  2 in equation (I)

2 + 2y = 8

    2y = 8 - 2

    2y = 6

      y = 6/2

y = 3

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Please help !!evaluate the algebraic expression 7x - 5 when x = 4/7
Ugo [173]
-1

7(4÷7)-5

Write the division as a fraction

7 \times  \frac{4}{5}  - 5
4-5

-1


hope it helps..
6 0
3 years ago
What is the probability that the product of the two numbers Drake rolls is less than 13?
Liono4ka [1.6K]
Ok so 2 dice
the probability means (desired outcomes)/(total possible outcomes)


one way is to list all outcomes and find the desirable ones (I will list and find product and bold all numbers less than 13)
product of 2 numbers means multiply fyi

1,1=1
1,2=2
1,3=3
1,4=4
1,5=5
1,6=6
2,1=2
2,2=4
2,3=6
2,4=8
2,5=10
2,6=12
3,1=3
3,2=6
3,3=9
3,4=12
3,5=15
3,6=18
4,1=4
4,2=8
4,3=12
4,4=16
4,5=20
4,6=24
5,1=5
5,2=10
5,3=15
5,4=20
5,5=25
5,6=30
6,1=6
6,2=12
6,3=18
6,4=24
6,5=30
6,6=36

36 possible outcomes
23 less than 13, desired outcomes=23

probability=23/36



answer is it is 23/36 probability that the number is less than 13 aka about 64%

6 0
3 years ago
Read 2 more answers
Which equation demonstrates the distributive property?
Art [367]

The correct option of your question is D

Step-by-step explanation:

To solve the sum we need to understand the distributive property

a×(b+c) = a×b + a×c

Here,

Option D is given as

RHS = 5(3+8) [ a=5, b=3 and c=8]

=15 + 40

= LHS

It satisfies the distributive property.

You can cross check the property with the other options.

D is the correct option.

6 0
4 years ago
Read 2 more answers
1. What is the slope of the line graphed below? <br> Coordinate 1: <br> Coordinate 2: <br> Slope:
Akimi4 [234]

Answer:

were is the line graphed?

Step-by-step explanation:

But I will help?

8 0
3 years ago
Read 2 more answers
How many milometers are in 1 foot?
Eva8 [605]

Answer:

1 Foot = 304.8 Millimeters

Step-by-step explanation:

:/

3 0
3 years ago
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