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3 years ago

Using elimination.

Mathematics

1 answer:

Svet_ta [14]3 years ago

8 0

Answer: x=2 y=1

Step-by-step explanation:

11x = 22

x = 2

5*2-2y=8

10-2y=8

10-8=2y

y=1

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Jacki evaluated the expression below.

Maru [420]

Answer: Jacki did not subtract 12 from 8 correctly

Step-by-step explanation: it should be -4

5 0

2 years ago

Read 2 more answers

Dylan walks into a video arcade with a pocketful of quarters. He spends them at a rate of nine every half hour until he runs out

jok3333 [9.3K]

Answer: The answer is A, y-intercept.

Step-by-step explanation:

4 0

3 years ago

A train from Portland, Oregon, to Los Angeles, California, travels at an average speed of 60 miles per hour and covers a distanc

seropon [69]

Answer:

The train need to leave Portland at 03:27 am

Step-by-step explanation:

step 1

Find out how long it takes the train to travel from Portland, Oregon, to Los Angeles, California

Remember that

The speed is equal to divide the distance by the time

The time is equal to divide the distance by the speed

Let

s ---> the speed in miles per hour

d ---> the distance in miles

t ---> the time in hours

$t=\frac{d}{s}$

we have

$d=963\ mi$

$s=60\ mi/h$

substitute

$t=\frac{963}{60}=16.05\ hours$

step 2

Adds 30 minutes (time it takes to get from the train station to her aunt's house)

Remember that

$30\ minutes=0.50\ hours$

$16.05+0.50=16.55\ hours$

Convert to minutes

$16.55\ h=16.55(60)\ min=993\ min$

step 3

Remember that

$8 p.m=20:00\ hrs$

Convert to minutes

$20(60)=1,200\ min$

Subtract 993 minutes from 1,200 minutes

$1,200-993=207\ min$

Convert to hours+minutes

$207\ min=207/60=3.45\ hours$

$0.45\ h=0.45(60)=27\ min$

$3\ h+27\ min$

$00:00 + 03:27=03:27\ am$

therefore

The train need to leave Portland at 03:27 am

8 0

3 years ago

5x - 4y = 19 <br> x + 2y = 8

klemol [59]

Answer:

(5x-4y)=19

5×19-4×19

95-76

Step-by-step explanation:

x+2y=8

x=8-2

x=6

7 0

2 years ago

If I buy 3 4/5kg of cherries and 2 1/4 of strawberry's what is the Mass kilograms of fruit

lisov135 [29]

If you would like to know how many kilograms of fruit do you have, you can calculate this using the following steps:

3 4/5 kg of cherries + 2 1/4 kg of strawberries = 3 4/5 + 2 1/4 = 19/5 + 9/4 = 76/20 + 45/20 = (76 + 45) / 20 = 121/20 = 6 1/20 kg of fruit

The correct result would be 6 1/20 kilograms of fruit.

3 0

3 years ago