All categories

2 years ago

Solve this system of equations. y = 2x – 12 y = -x + 3

Mathematics

1 answer:

3241004551 [841]2 years ago

4 0

X = 5, y = -2
-x +3 = 2x - 12
-3x = -15
3x = 15
x = 5
y = -5+3
y=-2

You might be interested in

Tran drove his car at a constant speed of 55 miles per hour.

eimsori [14]

Answer: don't know sorry

Step-by-step explanation:

8 0

2 years ago

Read 2 more answers

Carlos wants to practice piano 2 hours each day. He practices piano for 3/4 hour before school and 7/10 hour when he gets home.

kiruha [24]

Answer

Find out the how many hours has Carlos practiced piano .

To prove

As given

$He\ practices\ piano\ for\ \frac{3}{4}\ hour\ before\ school.$

$\frac{7}{10}\ hour\ when\ he\ gets\ home.$

Than

$Total\ hours\ carlos\ practiced\ piano = \frac{3}{4} + \frac{7}{10}$

L.C.M of (4,10) = 20

$Total\ hours\ carlos\ practiced\ piano = \frac{3\times 5+7\times 2}{20}$

$Total\ hours\ carlos\ practiced\ piano = \frac{15+14}{20}$

$Total\ hours\ carlos\ practiced\ piano = \frac{29}{20}\ hours$

Therefore the total hours Carlos practiced piano is 1.45 hours .

4 0

3 years ago

Read 2 more answers

Help 50 points and brainlest only if you answer all the questions

klasskru [66]

Answer: See below

Step-by-step explanation:

a) 6(3x+4y-8)

Use the distributive property:

6*3x + 6*4y - 6*8

18x + 24y - 48

So D is the correct answer

b) Factor out 4 because it can fit into 12 - 3 times - and 4 - one time.

12+4x

= 4(3+x)

So D is the correct answer

c) When you expand both C and D and simplify, you get 16x+36 as solution

d) 14x+2y+10z

Factor out 2 because it can fit into 14, 7 times. 2, one time. And 10, 5 times

14x+2y+10z

= 2(7x+y+5z)

So D is the correct answer again ;)

6 0

2 years ago

Read 2 more answers

Use the GCF and the distributive Property to find the sum of 29 + 91

irinina [24]

First you add them and then factor them the biggest factor is the answer

3 0

2 years ago

Please help. 21 points

Eduardwww [97]

Answer:

4/5 ÷3/5

4/5×5/3(any time one is dividing a fraction, the dominator would go up while the numerator would come down).

=4/3

4 0

2 years ago