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UNO [17]
3 years ago
7

Help plz, i would be so happy if you did nobody's been answering my questions lately :(

Mathematics
2 answers:
Vlada [557]3 years ago
8 0

Answer:

D

-5x + y = 7

x+3y = 5

Step-by-step explanation:

when you graph the equations, they are parallel. as you know, solutions are the point where the lines meet. if they are parallel, it's not possible for the lines to intersect.

maria [59]3 years ago
8 0

Answer and Step-by-step explanation:

Lets solve each one and see which has solutions and which one doesn't have a solution.

__________________________________________________________

A) x + y = -6

   x + y = 12

Solve for y for one of the equations, then plug it into the other equation.

y = -6 - x                  

x + (-6 - x) = 12     =    -6 = 12  No Solution

__________________________________________________________

B) y = 2x + 5

   y = -3x + 1

2x + 5 = -3x + 1

4 = - 5x

-\frac{4}{5} =x Solution

_________________________________________________________ C) y = 4x - 8

    y = 2x - 4

4x - 8 = 2x - 4

2x = 4

x = 2 Solution

__________________________________________________________

D) -5x + y = 7

     x + 3y = 5

x = 5 - 3y

-5(5 - 3y) + y = 7

-25 + 15y + y = 7

16y = 32

y = 2 Solution

__________________________________________________________

So, A is the correct answer. Sorry for the late answer!

#teamtrees #WAP (Water And Plant)

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50 points and I’ll mark you brainiest if correct.
Goryan [66]

Answer:

The container can hold 18 gallons

Step-by-step explanation:

Assume the container can hold x gallons

∵ The container is \frac{2}{3}  full with water

∵ It can hold x gallons

→ Multiply \frac{2}{3} by x to find the number of gallons in the container

∴ The number of gallons in the container = \frac{2}{3} x

∵ 4 gallons of water pouring out

∵ It is  \frac{4}{9} full

→ Multiply \frac{4}{9} by x to find the number of gallons left in it

∴ The number of gallons left in the container = \frac{4}{9} x

→ The difference between the numbers of gallons is 4 gallons

∵  \frac{2}{3} x - \frac{4}{9} x = 4

→ Subtract the terms of the left side

∴ \frac{2}{9} x = 4

→ Multiply both sides by 9

∴ 2x = 36

→ Divide both sides by 18

∴ x = 18

∵ x represents the full of the container

∴ The container can hold 18 gallons

7 0
3 years ago
Not a math question but they dont have a PE subject (math nerd who dont know sports needs help)
eduard

Answer:

i think its cancellation the others don't make sense.

Step-by-step explanation:

6 0
2 years ago
What is the ratio of 2ft 4in to 2 yards? (A) 2.4:2 (wrong) (B) 1:1 (wrong) (C) 7:18 (D) 1:2 (E) 2:9
andriy [413]

Hey there! :)

Answer:

C. 7 : 18.

Step-by-step explanation:

To solve this, we need to convert each of the measurements given to inches:

2 ft 4 in = 28 inches.

2 yard = 6 feet = 72 inches.

Therefore, expressing this as a ratio would give us:

28 : 72

Simplify by reducing by a factor of 4:

7 : 18. This is the ratio in simplest form.

8 0
4 years ago
Ms. Willer wanted to donate 27 cans of food to each of 8 food banks each of food to each of 8 food banks each of the 23 students
Natali [406]
It will need to be 9 as 27 by 8 is 216 and 23 by 9 is 207 and the you subtract 207 from 216 and get 9
7 0
4 years ago
372 to the nearest 100
dimulka [17.4K]

Answer: 400

Explanation: To round 372 to the nearest hundred, we first find the digit in the rounding place which in this case is the 3 in the hundreds place.

To decide whether to round up or down, we look

at the digit to the right of the 3, which is 7.

According to the rules of rounding, if the digit to the right of the

rounding place is greater than or equal to 5, we round up.

So in this problem, since 7 is greater than or equal to 5, we round up.

This means that we add 1 to the 3 in the rounding place

to get 4 and all digits to the right of 4 become 0.

So 372 rounded to the nearest hundred is 400.

5 0
3 years ago
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