What is the solution to the system of equations

Answers

Answer 1

Answer:

Step-by-step explanation:

$5x + 3y = 13 \n 7x + 8y = - 16 \n 5x = 13 - 3y \n x = (13 - 3y)/(5) \n 7( (13 - 3y)/(5) ) + 8y = - 16 \n 18.2 - 4.2y + 8y = - 16 \n 3.8y = - 34.2 \n y = - 9 \n$

$x = (13 - 3( - 9))/(5) = (13 + 27)/(5) = (40)/(5) = 8 \n x = 8 \n y = - 9$

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If z=4.0 and y= 7.2 what is the value of x?
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Can u help me in this algebra problem??

Answers

40.
ok so
1 part almods
2 parts walnuts
3 part rasins
multiply them
almonds=12 per pound
walnuts=9 per pound
rasins=5 per pound

therefor
12 times 1+9 times 2+5 times 3=cost of ratio=45
45=a ratio with 1lb almond, 2lb walnuts, 3lb rasins

we need it to get down to 15
45/x=15
x=3

$45=1a+2w+3r
divide both sides by 3
$15=1/3a+2/3w+1r

we need to find total so add them
1/3+2/3+1=2

answer is 2lb

41.
repair
so he has to pay the employees so that is a minus from his income
therefor
8600-22x
8600 is his income
-22x is the amount he has to pay his employees

they are paid 22 dollars an hour and that is taken from his income so
-22 times number of hour=amoont to pay employee
therefor x=number of hours worked per week

answer is 2

40. 2lb
41. no. 2 'hours worked per week'

What is the KE of a 1 kg ball traveling at 20 meters per second?

Answers

The easiest way to find that answer is to look at the solution that I just gave you for the same ball traveling at 30 M/Sec, and just substitute 20 in place of 30 in that solution.

Which unit would you use to measure the weight of a car?
O mg
O kg
O g
O km

Answers

Answer:

The weight of an object is defined as the force of gravity on the object and may be calculated as the mass times the acceleration of gravity, w = mg. Since the weight is a force, its SI unit is the newton.

hope that helps love!

What is the value of d?

11d = –44

Answers

11d = -44
d = -44/11
d = -4

The answer is: d = -4.

Can someone explain the steps to solve this so I can graph it?
y = 2x + 3?

Answers

y =mx+b y=2x+3
m is the slope
b is your yintercept [write it as a point (0,b) ]
Step 1: Plot the y intercept (0,3)
Step 2: Trace slope from yintercept ... go 2 place up them 1 place right you should end up on the point (5,1)
Step 3: Draw a line through the two points

How far up the wall does the shorter ladder reach ? Have no idea how to do these problems. Thank you.

Answers

45 minus 24 = 21 ft

Hope this helps ! :)

Other Questions

A merry-go-round has a radius of 10 ft. To the nearest tenth of a foot, what distance does the merry-go-round cover when it rotates through an angle of 72°?For my first try, I got 62.9 as my answer, and it was marked wrong. I did this a second time, and got 12.6. I would like to check with anyone else to see if I got the answer right.The answers for this question were:62.9, 12.6, 25.1, or 125.7

Numbers 20 - 22 please

Which ratio is equivalent to 4 to 5?

Fastest answer gets brainliest!!! 20x4-5+2001/974=