1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
faust18 [17]
3 years ago
10

Plzzzzzz help Solve the system by Substitution.

Mathematics
1 answer:
tankabanditka [31]3 years ago
4 0

Answer:

B

Both systems can be sloved by susbituding (1,2)

Step-by-step explanation:

(1)- x−4y=−7

Substitute in the x and y values: 1 - 4 (2) = -7

Multiply the numbers : 1 - 8 = -7

Calculate the difference: -7 = -7

(2) - −x+2y=3

Substitute in the x and y values: -1 + 2 (2) = 3

Multiply the numbers : -1 + 4 = 3

Calculate the sum: 3 = 3

You might be interested in
What is the value of n? Enter your answer in the box. n = cm Circle with two intersecting chords forming an x shape in the circl
Contact [7]
Answer: The length of the bottom left side is 14.

To find the length of this side, we need to know the relationship between the different sections when chords cross each other.

The relationship is that if you multiply the 2 parts of each chord together, it will equal the product of the two sides in the other chord.

Our equation can be written as:

7(8) = 4(x)
56 = 4x
14 = x
3 0
3 years ago
Read 2 more answers
Will give point to first correct answer!!
neonofarm [45]

Answer:

f(x) = 3(0.2)^x

Step-by-step explanation:

The leading coefficient is 3 as  x = 0 gives f(x) = 3.

When x = 1, f(x) = 0.6. so try :

0.6 =3(1.2)^1 = 3.6 so it's not the fiirst choice.

0.6 = 3(0.2)^1 = 0.6 so its last choice.

Check when x = -1:

3(0.2)^-1

= 3/ 0.2

= 15

3 0
2 years ago
Help me someone plz I need help
Tema [17]
Your answer would be -17 I think
7 0
4 years ago
Read 2 more answers
Marcus works at a coffee shop. He earns $10.25 each hour. Use marcus's time sheet for the week to answer the questions.
ASHA 777 [7]

Answer:

Should he take the new position?

He shouldn't not take the new position

Why or why not?

This is because he makes a lot more at his old job than his new position

Step-by-step explanation:

Please find attached to this answer, Marcus worksheet at for a week at the coffee shop

For his first job

Marcus works at a coffee shop. He earns $10.25 each hour.

Let the number of hour is = x

The equation is given as:

$10.25x

For a week

October 11, He worked from 5:45 - 12.00pm = 6 hours 15 mins = $61.5

For his

October 12, He worked from 5:45 - 1:00pm = 7 hours 15 mins = 71.75

October. 13

3. Marcus was offered a position which pays a salary of $150 every week and a 25 cent commission for each ice cream cone he sell.

Let the number of ice cream sells be equal to x

25cent = $0.25

$150 + $0.25× x

$150 + $0.25x

Marcus sells an average of 125 ice cream cones each week.

The amount Marcus makes in his new position in 1 week =

$150 + $0.25 × 125

= $150 + $31.25

= $181.25

Compare this to how much he made for a week at his current job.

Marcy makes more at his old job than his new position.

Should he take the new position?

He shouldn't not take the new position

Why or why not?

This is because he makes a lot more at his old job than his new position

3 0
3 years ago
The Gotemba walking trail up Mount Fuji is about 9km long. Walkers need to return from the 18km walk by 8pm. Toshi estimates tha
stiv31 [10]

Answer:

Toshi must begin his walk at 11:00 AM in order that he can return by 8:00 PM.

Step-by-step explanation:

Since the Gotemba walking trail up Mount Fuji is about 9km long, and walkers need to return from the 18km walk by 8pm, if Toshi estimates that he can walk up the mountain at 1.5km / h on average, and down at twice that speed , these speeds taking into account meal breaks and rest times, to determine what is the latest time he can begin his walk so that he can return by 8pm the following calculation must be performed:

Climb: 1.5 km / h

Descent: 2 x 1.5 km / h = 3 km / h

Climb: 9 km / 1.5 km / h = 6 hours

Descent: 9km / 3 km / h = 3 hours

Total: 9 hours

8 PM = 20:00

20:00 - 09:00 = 11:00

Thus, Toshi must begin his walk at 11:00 AM in order that he can return by 8:00 PM.

3 0
3 years ago
Other questions:
  • Find the value of x round to the nearest tenth 22 11.
    11·1 answer
  • How to draw a graph your cost c to buy w pounds of walnuts at 6$\lb is represented by c =6w
    9·1 answer
  • Jade and Dwayne work at a candy store. Every day for 7 days, Jade sold 10 packs with 6 candies each, and Dwayne sold 8 packs wit
    11·1 answer
  • I put 41 points.
    11·1 answer
  • WILL GIVE BRAINLIEST!!!!ASAP!!!!<br> What is (fg)^9 <br><br> f__ g__
    5·1 answer
  • The Marshall Plan, a plan to rebuild Europe, was seen by Stalin as a means to control Europe through western _______.
    10·1 answer
  • |-6|-|7-41|? <br><br> A. -40<br> B. -28<br> C. 28<br> D. 40<br> E. 54
    8·1 answer
  • What is 100,000+1,000,003 984
    7·1 answer
  • Find the volume (in cubic feet) of a rectangular moving van with length 12 feet, width 6 feet, and height 6 feet.
    10·2 answers
  • Two spheres have volumes of 8π cm3 and 64π cm3. if the surface area of the smaller sphere is 16π cm2, what is the surface area o
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!