All categories

2 years ago

Solve the system of equations using substitution.

Mathematics

1 answer:

OLEGan [10]2 years ago

7 0

$y=4x+6\\
y=2x\\\\
4x+6=2x\\
2x=-6\\
x=-3\\\\
y=2\cdot(-3)\\
y=-6\\\\
\boxed{(x,y)=(-3,-6)}$

You might be interested in

What is the answer to this equation? 5/4 + 4m/9 = 65/36

____ [38]

M=1.25 should be your answer!

7 0

2 years ago

HELP PLEASE!!!!!!!!!!!

Alona [7]

Answer:

Step-by-step explanation:

Step-by-step explanation:

The volume of a cylinder = πr²h

= 33 cubic inches

The volume of a cone = ¹/3 πr²h

If the cylinder and come share the same radius and height then ‘πr²h’ part of the formulas is the same for both;

It means the difference in proportionality is ¹/3 (because even π is the same across board). The volume of the cone is therefore;

¹/3 (33)

= 11

= 11 cubic inches

Hope this helps!

6 0

2 years ago

Please i really need it rn pls

Step2247 [10]

The 3rd option is correct

7 0

2 years ago

Read 2 more answers

Samantha's parents are going to paint her room. Her color choices for the

Phantasy [73]

Answer:the answer will be 6/16

Step-by-step explanation:

3/8

4 0

2 years ago

Small notebooks cost $3.50 and large notebooks cost $5.00. She needs to buy 31 notebooks, and she has $134 to spend. How many sm

Darina [25.2K]

Let's assume

number of small notebooks =x

number of large notebooks =y

we are given

total number of notebooks =31

so, we get

$x+y=31$

now, we can solve for y

$y=31-x$

we have

Small notebooks cost $3.50 and large notebooks cost $5.00

she has $134 to spend

so, we get

$3.50x+5y=134$

now, we can plug y

$3.50x+5(31-x)=134$

$3.50x+5*31-5x=134$

$-1.5x+155=134$

$-1.5x+155-155=134-155$

$x=14$

now, we can find y

$y=31-14$

$y=17$

so,

number of small notebooks is 14

number of large notebooks is 17.............Answer

6 0

3 years ago

Read 2 more answers