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EastWind [94]
3 years ago
8

Find the x and y intercepts. Write your answer as x = y = 10x + 5y = 120

Mathematics
2 answers:
inna [77]3 years ago
7 0

Answer:

y=2× -24

Step-by-step explanation:

-5y=-10× +120

-5y/-5=10×/-5 +120/-5

y=2× -24

sattari [20]3 years ago
5 0

Answer:

x = 24 - y / 2

y = 2(-x + 12)

Step-by-step explanation:

<u>Solving for x:</u>

10x + 5y = 120

       -5y      -5y

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

10x = 120 - 5y

/10      /10

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

x = 24 - y / 2        (write 24 - y at the top of the fraction and 2 in the bottom)

<u>Solving for y:</u>

10x + 5y = 120

-10x           -10x

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

5y = 120 - 10x

/5         /5

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

y = 120 - 10x / 5

Factor 120 - 10x

= 10(12 - x)

Now divide by 5

y = 2(-x + 12)

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Mnenie [13.5K]

Answer:

where is the function? where are the equations?

7 0
3 years ago
Can you help me with this problem please
Over [174]

Remark

I think you want us to do both 3 and 4


Three

QR is 4 points going left from the y axis + 2 points going right from the y axis.

QR = 6 units long.


RT is 4 units above the x axis and 3 units below the x axis

RT = 7 units long


TS = 3 units. For this one you just go from T to S. The graph really helps you. You just need to count.


Problem 4

You need to find the area of the combined figure. You could do it as a trapezoid, which might be the easiest way. I'll do that first.


Area = (b1 + b2)*h/2


Givens

B1 = QR = 6

B2 = UT + TS = 6 + 3 = 9

h = RT = 7


Area

Area = (6 + 9)*7/2

Area = 15 * 7 / 2

Area = 52.5


Comment

You could break this up into a rectangle + a triangle

Find the area of QRTU and add the Area of triangle RTS


<em>Area of the rectangle </em>= L * W

L = RT = 7

W = QR = 6

Area = 7 *6 = 42


<em>Area of the triangle</em> = 1/2 * B * H

B = TS = 3

H = RT =7

Area = 1/2 * 3 * 7

Area = 1/2 * 21

Area = 10.5


Total Area = 42 + 10.5 = 52.5 Both answers agree.

3 0
3 years ago
The price of an item costs $13 to make. It is marked up $6.50 to sell. What is the percent marked-up
Whitepunk [10]

(1 + x) (13) = 13+6.5

13x + 13 = 19.5

13x = 6.5

x = 0.5

The item was marked up by 50%

4 0
3 years ago
53 - 9y = 1<br> -7.2 + 2y = -5
telo118 [61]

Answer:

1.1, -5

Step-by-step explanation:

53 - 9y = 1

from equation i

53-9y = 1

-9y= 1-53 = -52

y = -52/-9= 52/9 = 5⁷/₉

-7.2 + 2y = -5

add 7.2 to both sides

2y= -5+7.2 = 2.2

y= 2.2/2 = 1.1

7 0
3 years ago
6. Michael Johnson holds the Olympic record for the men's 400m race at 43 seconds. His
vlada-n [284]

The difference between both unit rates rounded off to the nearest tenth is: 0.4 meters per second

Step-by-step explanation:

We have to calculate his unit rate for both type of races

So,

<u>Unit rate for 400m race:</u>

Distance = 400m

Time = 43 sec

Unit\ rate = U_1= \frac{Distance}{Time}\\=\frac{400}{43}\\=9.30\ meters\ per\ second

<u>Unit rate for 300m Race:</u>

Distance = 300m

Time = 31 sec

Unit\ Rate= U_2=\frac{300}{31}\\=9.68\ meters\ per\ second

The difference between both unit rates is:

U_2-U_1 = 9.68-9.30\\=0.38 => 0.4\ meters\ per\ sec

Hence,

The difference between both unit rates rounded off to the nearest tenth is: 0.4 meters per second

Keywords: Unit rate, Speed

Learn more about unit rate at:

  • brainly.com/question/10364988
  • brainly.com/question/10435816

#LearnwithBrainly

7 0
3 years ago
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