Mathematics College

Solve each system by elimination.

3) 3x + 4y = 12
-3x - y = 6

4) -5x – 6y = 5
-6x + 6y = 6

5) 7x - 4y = 19
10x - 2y = 16

6) 10x - 9y=-13
5x – 3y =-11

Answers

Answer 1

Answer:

3) x = -4 and y = 6

4) x = -1 and y = 0

5) x = 1 and y = -3

6) x = -4 and y = -3

Step-by-step explanation:

3) Add the equations:

(3x + 4y = 12) + (-3x - y = 6) (eliminate the x)

= 3y = 18

y = 18/3

y = 6

3x + 4(6) = 12

3x = 12 - 24

x = -12/3 = 4

4) Add the equations:

(-5x - 6y = 5) + (-6x + 6y = 6)

-11x = 11

x = -1

-5(-1) -6y = 5

-6y = 5 - 5

y = 0

5) 7x -4y = 19

10x - 2y = 16

Multiply the second equation by -2 to eliminate the y and add both equations.

-2(10x -2y = 16) =

(-20x + 4y = -32) + (7x - 4y = 19)

-13x = -13

x = 1

7(1) - 4y = 19

-4y = 19-7

y = 12/-4

y = 3

6) multiply the second equation by -2 to eliminate the x and then add the equations.

-2(5x - 3y = - 11) =

(-10x + 6y = 22) + (10x - 9y = - 13)

= -3y = 9

y = - 3

10x - 9(-3) = - 13

10x = -13 - 27

x = -40/10

x = -4

Related Questions

Find the indicated values by using the table.

X= g(x)=2x+1

Answers

Answer:

g(10) = 21

g(0) = 1

g(10) = 21

g(22) = 45

g(28) = 57

g(16) = 33

Step-by-step explanation:

g(x) = 2x + 1

Then in order to find g(10), replace x over 10

g(10) = 2(10) + 1

g(10) = 20 + 1

g(10) = 21

so g(10) = 21

keep doing this to all of the problems and it should be answered the same way.

What term describes the amount you must pay in order to be considered “up-to-date” with your credit card payments?
Interest
Minimum payment
Closing balance

Answers

Answer:

Minimum payment

Step-by-step explanation:

A minimum payment is the least amount that one must pay to be "up-to-date" with one's credit card payments.

In this exercise we have to use the knowledge of finance and identify in the given statement which term is used correctly:

Minimum payment

So the term used in this exercise corresponds to:

A minimum fee happen the minimal amount your credit card issuer will acknowledge toward your charge card balance each temporal length of event or entity's existence. You must pay not completely this amount for your fee to be deliberate "according to schedule," and to prevent late charge for service or privilege and other punishment.

See more about  finance  at brainly.com/question/10024737

A class is selling magazines as a fund raiser. of the 500 magazines sold, allie sold 1/7 of them. Gary sold 0.085 of the magazines. rob sold 9/100 of the magazines, and felisha sold 0.185 of the magazines. who sold the most magazines?
PLS ANSWER QUICKLY THANK YOU :)

Answers

Answer:

Felisha

Step-by-step explanation:

please help me with this sum​

Answers

Hello there!

4,968:8=621

3,960:6=660

2,728:4=682

1,584:2=792

2,527:7=361

2,586:3=862

4,205:5=841

8,550:9=950

2,200:4=550

1,923:3=641

Hope this helps you!

~Just a joyful teen

[tex]SilentNature\\(GraceRosalia)[/tex]

solve pls brainliest

Answers

39.2
give brainless thanks
Answer above is correcttttttt

What is the equation of a line that passes through the points (6,-4) and (1,6)

Answers

Answer: y = -1/2x + 8

Step-by-step explanation:

Answer: Y=-1/2x+8

Step-by-step explanation:

You have to divide

I will gladly give brainliest.
4 ( 2x - 3) -2 ( x + 1)

Answers

Answer:

6x - 14

Step-by-step explanation:

4(2x - 3) - 2(x + 1)

1. Expand both brackets

(8x - 12) - (2x + 2)

2. Simplify

8x - 2x = 6x

-12 - 2 = -14

Therefore, 4(2x - 3) - 2(x + 1) = 6x - 14

Once the high temperature was 30°F. Then at night the temperature dropped by 23 degrees. does the expression 30 + (-23) mean the temperature at night? explain.​

Answers

Answer:

7°

Step-by-step explanation:

simple arithmetic duh

Solve for the variable

9b+4−8b=7

b = ?

Answers

The answer is 3
B+4=7
B=7-4
B=3

answer I'll give brainliest to the first one
SERIOUS ANSWERS ONLY​
10 points

Answers

Answer:

1: 24 girls

2: 640

3: 300

4: 3/10

5: 42

Step-by-step explanation:

1: 2/5 × 40

80÷ 5

16

girls = 40- 16

= 24

2: 1/3 × 960

960 ÷3

= 320

Left = 960 - 320

= 640

3: 3/8 × 480

1440 ÷ 8

= 180.

Left = 480 - 180

= 300

4: 2/5 × 3/4

= 6/20

= 3/10

5: 2/5 × x = 18

2x = 28 × 5

2x = 140

x = 70

70 - 28

= 42

Step-by-step explanation:

1. 24 girls

2.600

3.300

yan lang alam ko insan

A) AAS
B)ASA
C)not enough information
D) SSS

Answers

A) AAS I think not sure

I need help please and thanks
Number 9

Answers

Answer:

x= 1.75

Step-by-step explanation:

Use the associative property to simplify the expression 50 + 20 + 37​

Answers

Answer:

(50+20) +37=70+37=107

6.71 x 10^6 divided by 3.6185 x 10^4

Answers

Answer:

185.436

Step-by-step explanation:

10^6=1000000

6.71×1000000=6710000

10^4=10000

3.6185×10000=36185

6710000÷36185=185.436

"andrea sells cell phones in sydney, but never on sunday. she is paid 3500 a month plus 20% of her monthly sales. she needs to earn atleast 4800 a month to pay for her rent, food, fun, and other life essentials. to afford her lifestyle, what amount of sales will andrea need to achieve?"

Answers

Answer: Answer.  $6500.

Step-by-step explanation:

The equation to solve it is

3500 + 0.2*x = 4800,

Simplify and solve it:

0.2x = 4800 - 3500,

0.2x = 1300,

x = 1300%2F0.2 = 6500.

Find h(-1) if h(x) =- 3|3x – 6|– 3?

Answers

Answer:

Step-by-step explanation:

h(-1) = - 3|3(-1) - 6| - 3

h(-1) = - 3|-3 - 6| - 3

h(-1) = - 3|-9| - 3

h(-1) = - 3(9) - 3

h(-1) = - 27 - 3

h(-1) = - 30

Please help me I need this done

Answers

Answer:

I will help you but question is not clear

Which of the following functions is graphed below?

Answers

Answer:

ITS A

Step-by-step explanation:

the y intercept is at positive 4 so y will be at 4

I want to say A, but at the same time, is the x in an absolute value function?

Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the
correct position in the answer box. Release your mouse button when the item is place. If you change your mind, drag
the item to the trashcan. Click the trashcan to clear all your answers.
Place the indicated product in the proper location on the grid.
6xy(3x2 - xy + $x2)
III
у
Х
y
a b cx y
1234567890
Z

Answers

Answer:

2345677888yffycchujbvfsxbjydcbtscno

put the boxes in the correct place given equation is first to let you know

Answers

When converted to a household measurement, 9 kilograms is approximately equal to a

In one season a basketball player missed 45% of her free throws. How many free throws did she attempt if she made 176 free throws?

Answers

Step-by-step explanation:

she missed 45%, so that means she made 55% of her free throws.

and these 55% correlate to the absolute number of 176 successful throws.

so,

55% = 176

1% = 55%/55 = 176/55

100% = 1%×100 = 176×100/55 = 320

so, she attempted 320 free throws in total.

Hey , help maybe please thanks<3?

Answers

Answer:

48 fluid ounces= 3 pints

Answer:

3 pints

Step-by-step explanation:

[tex]48 \: fl \: oz \: \div \frac{8 \: fl \: oz}{cup} = 6 \: cups[/tex]

[tex]6 \: cups \: \div \frac{2 \: cups}{pint} = 3 \: pints[/tex]

Find the value of x.

Answers

calculate the formula of the triangle and then use pythagoras thereom to solve the values according to their sides

Don't forget to thank me later

We need to find the scale factor for this which will give us how much the triangle was scaled down.
We can find this out by doing 8/12 which is simplified to 2/3.

We can check this is correct because 12 x 2/3 gives us 8.
So now we do 15 x 2/3 = 10

This means x - 4 = 10
x = 14

Determine the number of terms n in each arithmetic series

a1 = -29, an = -119, Sn = -740

Please help :,(

Answers

n=the number of terms, so I believe the answer is 10

if 126 base n =86 base ten, find the positive value of n​

Answers

Answer:

8

Step-by-step explanation:

The value of sin 240° is

Answers

Answer:

-0.5879

......................................

Answer:

-0.866

Step-by-step explanation:

or  -(√3/2)... same thing just different format. Hope this helps

Don’t answer on this or ur sus

Answers

>:)

heheheheheheheherhehehehreh

please help.... fast​

Answers

Answer:

HL

Step-by-step explanation:

It tells you the triangle is a right triangle and it tells you that the hypotenuse of both triangles is congruent.

I'm confident that this is the answer.

Does anyone know this?

Answers

Answer:

Simple as 3x + 1

The answer above is correcttttttt

z i = -5 3 , có R 1 1 e z z = 5, Im 3 = -

Answers

Your answer will be 2m
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