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
natali 33 [55]
3 years ago
8

Y=2x+1 x+y=7 pls help meeeeeeeee

Mathematics
2 answers:
Gala2k [10]3 years ago
5 0

Answer:

y=2,\:x=\frac{5}{2}

Step-by-step explanation:

\begin{bmatrix}x+1\cdot \:x+y=7\\ y=2\end{bmatrix}

x+1· x+2=7

Simplify x+1· x+2:    2x+2x+1· x+2

Add similar elements: x+1· x=2x=2x+2

2x+2=7[ 2x+2=7 ]

Isolate x for 2x+2=7:    x=52 2x+2=7

Subtract 2 from both sides

2x+2−2=7−2

Simplify

2x=5

Divide both sides by 2

2x2 =52 Simplify

vlabodo [156]3 years ago
4 0

Answer:

y = 2x + 1 \\ substitute \: for \: y \: in \: x + y = 7 \\ x + (2x + 1) = 7 \\ 3x =   - 6 \\ x =  -  \frac{1}{2}  \\ y = 2( -  \frac{1}{2} ) + 1 \\ y =  - 1 + 1 \\ y = 0

You might be interested in
I NEED HELP ASAP 17 points and BRAINLIEST!!!!!!!!!!
guajiro [1.7K]

Answer:

1st 3rd and 4th

Step-by-step explanation:

I just did that

7 0
3 years ago
I need help figuring out the steps to do this question
krok68 [10]

6x-18                                  14x+38

subtract the 6 from the 6 and the 14 which will give you:                 then add the 18 to the the 18 and the 38  

8x = 56

then divide 8/8 which is zero and 8/56 which equals 7  so ur answer is x=7

3 0
3 years ago
a right triangle has a hypotenuse with a length of 20. the lengths of the legs are whole numbers. what are the lengths of the le
Y_Kistochka [10]

Answer:

12;16

Step-by-step explanation:

The Pythagorean theorem states that

a^2+b^2=c^2 where a and b are legs of a triangle, and c is the hypotenuse.

This means that we have to find 2 values that once squared, add up to 400. (20^2)

Based on this, we can use the values of 12 and 16 to satisfy this.

12^2+16^2=144*256=400

Therefore, the legs of the triangle are 12 and 16.

5 0
3 years ago
Hi how is your hiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii
kicyunya [14]
How is your.....what?
6 0
4 years ago
Which of the following equations matches the function shown above?
Ksenya-84 [330]

So, the function is obviously shifted up by 1 so it rules out A and B, and we also see that the period is 4pi rather than 2pi, and using the fact that:

\frac{2\pi}{b}=4\pi \implies \frac{b}{2\pi}=\frac{1}{4\pi}\implies b=\frac{1}{2}

Now that we know our b value, we see that the correct answer would be C.

3 0
3 years ago
Other questions:
  • What is 4.3(v+2.5)=8.11+4v
    10·1 answer
  • A ceramic vase that cost an antique store $5 was marked $20. what is the percentage markup on the price of the ceramic vase?
    8·1 answer
  • Show how to use the distributive property to simplify 4(5+x).
    11·1 answer
  • How many rectangles can u make with 20 cubes
    15·2 answers
  • Use the table below.
    11·2 answers
  • Mr. Palmer deposited $850 into a simple interest account for 8 years, earning at an 8% interest rate. What will his total balanc
    11·1 answer
  • If the price of a yo-yo in a shop increased by 20% and is now $6.00, what was the original price?
    8·1 answer
  • What is the equation of the line that passes through the point (-1, -5) and has a slope of -2?
    14·1 answer
  • HELPP
    15·2 answers
  • Help!!!me please please
    10·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!