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
Luden [163]
3 years ago
5

Solve each system of equations (show steps) y=2x x+y=12

Mathematics
1 answer:
Hunter-Best [27]3 years ago
7 0
Im learning this too right now hope this helps

1.you get y by itself and put what y equals where y is in the other equation
y=2x. x+y=12

x+2x=12
3x=12. (divided 3 on both sides)
x=4

2.after you find x(or y) put it in one of the problems above and solve for whats missing which in this case is y

y=2(4) 4+y=12
y=8. -4. -4
y=8
You might be interested in
[20 POINTS] Find the area of the rectangle
zvonat [6]
5 points

Hope this helps

8 0
3 years ago
Philip’s rectangular deck is 5 yards wide. The ratio of the width to the length is 4 to 5. What is the approximate length of Phi
VladimirAG [237]

Answer:

12 feet

Step-by-step explanation:

just convert 4 yards into feet

8 0
3 years ago
Read 2 more answers
(5ab-9a-4) - (-4ab + 5)
qaws [65]

Answer:

9ab - 9a +1

Step-by-step explanation:

first, we can distribute the negative sign to the second set of parentheses.

-(-4ab + 5) becomes + 4ab - 5

now let's put the values in (5ab-9a-4) side by side with the corresponding values in + 4ab - 5

5ab + 4ab - 9a - 4 - 5

= 9ab - 9a - 9, because 5ab + 4ab = 9ab, -9a is alone, and -4 - 5 = -9.

8 0
3 years ago
(10+-7 - -2) / (-2 - -1)
Scrat [10]

Nice use of brackets. We know exactly what you mean.

(10 - 7 + 2) / (-2 + 1) Notice that with an even number of - signs, you get a plus and with and odd number you get a minus.

(5) / (-1) = - 5 answer

Edit

Numerator

10 does not change.

+ - 7 Here a plus and a minus are put together. There is 1 minus sign which is an odd number of minus signs so the 7 is minus

- - 2 Here there are 2 minus signs. They become plus because 2 is even, and an even number of minuses become a plus so you have +2

10 - 7 + 2 = 5

Denominator

-2 does not change. It remains minus 2.

- - 1 There are 2 minus signs so this becomes plus 1.

- 2 + 1 = - 1

Numerator over denominator = 5/-1 = - 5. I'll probably run out of editing time. If you still don't understand, try and pinpoint the problem and we'll keep trying until you do see it. This question is worth it.

4 0
3 years ago
Read 2 more answers
An isosceles triangle has a base 9.2 units long. If the congruent side lengths have measures to the first decimal place, what is
Nadusha1986 [10]

Question:

An isosceles triangle has a base of 9.6 units long. If the congruent side lengths have measures to the first decimal place, what is the possible length of the sides? 9.7, 4.9, or 4.7

Answer:

4.9 is the shortest possible length of the sides.

Step-by-step explanation:

Given:

The base of the triangle base  =   9.2 units

To Find:

The shortest possible length of the sides = ?

Solution:

The Triangle Inequality Theorem states that the sum of any 2 sides of a triangle must be greater than the measure of the third side.

So According to the theorem

x+x > 9.6

2x > 9.6

x > \frac{9.6}{2}

x > 4.8

In the given option 4.9 is the shortest length greater than 4.8 that can be possible.

3 0
3 years ago
Other questions:
  • 3. The average annual income of 100 randomly chosen residents of Santa Cruz is $45,221 with a standard deviation of $30,450. a.
    8·1 answer
  • 7. David bought two types of cards. He bought x type of cards that cost $4 andy
    10·1 answer
  • 2x to the fourth power + 5x squared + 3, factored
    10·2 answers
  • What value should go in the empty box to complete the calculation for finding the product of 73.458 × 0.39? the empty box in the
    13·1 answer
  • Solve the following<br> if 7+2x all divided by three equals 5 what is x?
    14·2 answers
  • A grocer is stocking cans of beans on his shelf for a 7-day week and will
    5·1 answer
  • Please help, I'll mark brainlist
    5·1 answer
  • Please help need answer today!!
    12·1 answer
  • Can anyone help me answer this?
    14·2 answers
  • WILL GIVE BRAINLIEST TO ANSWERER!<br> (3/y-3)=(12/y+3)<br><br> Please help me...
    5·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!