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aalyn [17]
3 years ago
7

3x+2y=3y line 1 x+y=10 line 2 solve for x/y

Mathematics
1 answer:
Mazyrski [523]3 years ago
3 0

Answer:

x/y=1/3

Step-by-step explanation:

3x+2y=3y

x+y=10

---------------

3x=3y-2y

3x=y

x+3x=10

4x=10

x=10/4=5/2

5/2+y=10

y=10-5/2=20/2-5/2=15/2

x/y=(5/2)/(15/2)=(5/2)(2/15)=5/15=1/3

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Which of the following expressions represents "the sum of n and the sum of 8 and 6"?
Tju [1.3M]
Answer: n( 8+6) because it shows the sum of n and the sum of 8+6 seperately like in the sentence.
8 0
4 years ago
This is easy for some ppl but not me
WINSTONCH [101]

Answer:

- 5  \frac{1}{3}  \div 3 \frac{1}{10}  \\  =  \frac{ - 5 \times 3 + 1}{3}  \div  \frac{3 \times 10 + 1}{10}  \\  =   \frac{ - 16}{3}  \times  \frac{10}{31}  \\  =  \frac{ - 160}{93}

Hope it will help :)

8 0
3 years ago
Read 2 more answers
Solve for x: 2(2a+3)-6=5a+2
coldgirl [10]

Answer:

a=-2

We move all terms to the left:

2(2a+3)-6-(5a+2)=0

We multiply parentheses

4a-(5a+2)+6-6=0

We get rid of parentheses

4a-5a-2+6-6=0

We add all the numbers together, and all the variables

-1a-2=0

We move all terms containing a to the left, all other terms to the right

-a=2

a=2/-1

a=-2

Step-by-step explanation:

We move all terms to the left:

2(2a+3)-6-(5a+2)=0

We multiply parentheses

4a-(5a+2)+6-6=0

We get rid of parentheses

4a-5a-2+6-6=0

We add all the numbers together, and all the variables

-1a-2=0

We move all terms containing a to the left, all other terms to the right

-a=2

a=2/-1

a=-2

Please like and give me Brainliest!

3 0
3 years ago
Read 2 more answers
Help find the missing lengths round to nearest tenth
Mama L [17]

Answer:

<h2>x = 20.8</h2><h2>y = 22.3</h2>

Step-by-step explanation:

  • Theta is 21 degrees
  • x is the adjacent side
  • 8 is the opposite side
  • y is the hypothenuse

SOH - CAH - TOA

Since the opposite side is given and we need to find the length of the adjacent side, we can use tangent to solve for x.

tan 21=\frac{opposite}{adjacent} \\tan 21 =\frac{8}{x} \\0.384 =\frac{8}{x} \\0.384x =8 \\x=\frac{8}{0.384} \\x=20.84

Since the opposite side is given and we need to find the length of the hypotenuse, we can use sine to solve for y.

sin 21=\frac{opposite}{hypotenuse} \\sin21 =\frac{8}{y} \\0.358 =\frac{8}{y} \\0.358y=8 \\y=\frac{8}{0.358} \\y=22.32

6 0
3 years ago
In a normal distribution, 99.7% of the data fall within how many standard
Mazyrski [523]

Answer: Three standard deviation

Step-by-step explanation:

6 0
3 years ago
Read 2 more answers
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