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Vsevolod [243]
3 years ago
11

Solve the following system of equations. -7x +4y = 10 -5x +3y = 8 x= y=

Mathematics
1 answer:
Virty [35]3 years ago
4 0

Answer:x=2

              y=6

Step-by-step explanation:

-7*x+4*y=10

     ║minus

-5*x+3*y=8

----------------

-2*x+y=2

y=2+2*x

-------------

-5*x+3*(2+2*x)=8

-5*x+6+6x=8

x=8-6

x=2

-------------------------

-7*2+4*y=10

4*y=10+14

4*y=24

y=24/4

y=6

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bagirrra123 [75]

Answer:

1) 20% change I think its an increase.

If needed I could try to answer the 2nd question but I am sure that I got the first one right.

Step-by-step explanation:

7 0
2 years ago
In ABC, BC = a = 16, AC = b = 10, and m<C = 22º. Which equation can you use to find the value of c = AB?
AnnyKZ [126]

Answer:

10 times 16 = C

Step-by-step explanation:

c2 = a2 + b2 − 2ab cos C = 162 + 102 − 2(10)(16) cos 22°

5 0
3 years ago
Set B is defined as B={x|x is an integer}. Name two elements of B.
jenyasd209 [6]
By definition we have an integer number given by:
 An integer is an element of the numeric set that contains the natural numbers {N} = {1,2,3,4, ...}, its opposite and zero.
 On the number line we find the negative numbers to the left of the zero and to its right the positive numbers.
 We have then, according to the definition, that the following are whole numbers:
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option D
7 0
3 years ago
Read 2 more answers
Convert 0.0150 km to meters and express the answer to the correct number of significant digits. a. 150 m b. 15 m c. 15.0 m d. 15
FromTheMoon [43]

The correct answer is option C which is 15 meters.

<h3>What is unit conversion?</h3>

Unit conversion is a multi-step process that entails multiplying or dividing by a numerical factor, selecting the correct number of significant digits, and then multiplying or dividing by another numerical factor.

The unit conversion will be done as:-

1 km  =  1000 meters

0.0150 Km = 0.0150 x 1000 meters

0.0150 Km = 15 meters

Therefore the correct answer is option C which is 15 meters.

To know more about unit conversion follow

brainly.com/question/141163

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5 0
2 years ago
X=1-2y how would you solve this?
Ivahew [28]

Answer:

You can't have a single answer.

Step-by-step explanation:

An indiviual equation can't be solved if it has 2 variables.

You can, however, graph it.

The line will create all the possible sets of answers for the problem.

5 0
2 years ago
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