Solve the system of equations by substitution.
5x + y =18
Y=4x

Answer:

x=1 or x=9

Step-by-step explanation:

make x the subject of the formula by correcting the right terms and then divid both sides by 2

Answer:

Step-by-step explanation:

Answer:

-17/44

Step-by-step explanation:

87n - 8 = -42 - n

88n = -34

n = -34/88

n = -17/44

Answer: 36.4

Explanation:

First, you have to find how much she walked in one day(15.6/3)

which is 5.2. Then, multiply 5.2 by 7 and you get 36.4.

Answer:

1. 1,200 people

2. 95

3. true proportion of adults who

Step-by-step explanation:

Answer:

x=78

Step-by-step explanation:

q is 90 degrees since it is a right angle,

p=12

90 plus 12 =102

x=180-102

x=78

Answer:

faces = 8

edges = 12

vertices = 6

Answer:

7 17/100

Step-by-step explanation:

Answer: I think it’s 7 17/100

Step-by-step explanation:

Answer:

x=70

Step-by-step explanation:

To solve this problem, you set up the equation 45+(2x-5)=180

Next, subtract 45 from 180 to get the equation 2x-5=135

After that, add 5 to 135 to get 2x=140

Divide 140 by 2 to get X=70

Answer:

123

Step-by-step explanation:

492 divided by four equals 123

Answer:

110 = 12

110 + 110 + 110 + 110 = 440

so 110 × 4 = 440

4 × 12 = 48 days

hope this helps

Answer:

hope it helps.

Answer:

210 degrees

Step-by-step explanation:

This question involves the unit circle. The unit circle is generally something you need to memorize, but if you can remember one quadrant you can just change the signs to apply it to other quadrants. In this case, when sinθ = -1/2, θ is 7π/6, which is equal to 210° (remember that π is equal to 180°)

Answer:

30.6%

Step-by-step explanation:

Use the rule of three

Answer:

960? i dont see what shape ur talking abt

Step-by-step explanation:

Answer:

37

Step-by-step explanation:

if you put it in a calculator thats the answer

9514 1404 393

Answer:

  $2.50

Step-by-step explanation:

The question asks for the total cost of a notebook and pen together. We don't need to find their individual costs in order to answer the question.

Sometimes we get bored solving systems of equations in the usual ways. For this question, let's try this.

The first equation has one more notebook than pens. The second equation has 4 more notebooks than pens. If we subtract 4 times the first equation from the second, we should have equal numbers of notebooks and pens.

  (8n +4p) -4(3n +2p) = (16.00) -4(6.50)

  -4n -4p = -10.00 . . . . . . . . . . . simplify

  n + p = -10.00/-4 = 2.50 . . . . divide by the coefficient of (n+p)

The total cost for one notebook and one pen is $2.50.

__

Additional comment

The first equation has 1 more notebook than 2 (n+p) combinations, telling us that a notebook costs $6.50 -2(2.50) = $1.50. Then the pen is $2.50 -1.50 = $1.00.

One could solve for the costs of a notebook (n) and a pen (p) individually, then add them together to answer the question. We judge that to be more work.

Answer:

2x - 2x + 6y + y = 6 + 8

7y = 14

y = 2

2x + 6(2) = 6

2x + 12 = 6

2x = -6

x = -3

Answer:

X=-3, y=2

Step-by-step explanation:

Answer:

I gotchu

Step-by-step explanation:

The volume triples

Odysyware

Answer:

The volume triples

Step-by-step explanation:

i got 100% on quiz for odysseywa

9514 1404 393

Answer:

  2580 g

Step-by-step explanation:

The conversions are ...

  1 oz = 1/16 lb

  1 lb = 453.59237 g (exactly)

So, your roast is ...

  (5 11/16 lb)(453.59237 g/lb) = (91·453.59237/16) g ≈ 2579.8066... g

The weight is about 2580 grams.

Answer:

D. 2

Step-by-step explanation:

The only possible outcomes that Janessa could possibly calculate would be 5 and 6. This is because a single die has 6 possible outcomes. If Janessa's friends rolled a 3 and a 4, and Janessa needs to roll something higher, then the only higher possible outcomes would be a 5 or a 6. Meaning that Janessa can only use a total of 2 desired outcomes for her to actually win the game.

Answer:

sorry i need more points

Step-by-step explanation:

197.8

Pog Pog Pog Pog Pog

Answer:

68

Step-by-step explanation:

Answer:

x = 68°

Step-by-step explanation:

measure of angle adjacent to 128° equals 52°

60 + 52 + x = 180

x = 180 - 112

x = 68

[tex]\huge\text{Hey there!}[/tex]

[tex]\mathsf{\dfrac{2}{3}\times\dfrac{5}{9}}[/tex]

[tex]\mathsf{= \dfrac{2\times5}{3\times9}}[/tex]

[tex]\mathsf{= \dfrac{2 + 2 + 2 + 2 + 2}{3 + 3 + 3 + 3 + 3 + 3 + 3 + 3 + 3}}}}[/tex]

[tex]\mathsf{= \dfrac{4 + 4 + 2}{6 + 6 + 6 + 6 + 3}}[/tex]

[tex]\mathsf{= \dfrac{8 + 2}{12 + 12 + 3}}[/tex]

[tex]\mathsf{= \dfrac{10}{24 + 3}}[/tex]

[tex]\mathsf{= \dfrac{10}{27}}[/tex]

[tex]\huge\textbf{Therefore, your answer should be:}[/tex]

[tex]\huge\boxed{\frak{\dfrac{10}{27}}}\huge\checkmark[/tex]

[tex]\huge\text{Good luck on your assignment \& enjoy your day!}[/tex]

Answer:

$542.50

Step-by-step explanation:

Answer:

Step-by-step explanation:

so brh

Answer:

Modern technology allows businesses to create products and conduct their services at a faster rate and for a lower price. Because modern technology helps people to complete tasks at a faster rate, less people are needed, less mistakes occur, and more money can be earned.

Step-by-step explanation:

Answer:

1 [tex]\frac{1}{2}[/tex]

Step-by-step explanation:

There are a total of 2 friends, if they have 3 cereal bars and want to split it equally then we simply need to divide the number of cereal bars by the number of friends which would give us the number of cereal bars that each individual will get, which will be represented by x

x = 3 / 2

x = 1 [tex]\frac{1}{2}[/tex]

Finally, we can see that each friend will get a total of 1 and a half of a cereal bar.

Answer:

wait can you post the questions