2 years ago

Solve this system of equations using substitution:

Mathematics

1 answer:

yanalaym [24]2 years ago

4 0

I’m thinking your r in the first equation is actually an x.

X + 2(2x -4) =10

X +4x -8 =10

5x = 18

You might be interested in

Help me please I have the faintest clue

djverab [1.8K]

Answer:

chord CD is 11

Step-by-step explanation:

just add 2 and 9

7 0

2 years ago

The perimeter of a flag is 474 inches. The flag is 100 inches tall. How long is it?

zhannawk [14.2K]

The answer is 136 I hope this helped

3 0

2 years ago

Read 2 more answers

6. Emily rides her bike with a constant speed of

qaws [65]

Answer:

42 miles

Step-by-step explanation:

If it's a constant 12 miles per hour then it would be

12 mph x 3 hours = 36

then you would add that with the 1/2 hour for

12 mph x 1/2 hours = 6

36 + 6 = 42 miles traveled

8 0

1 year ago

The waiting time to ride a roller coaster is 20 minutes when 150 people are in line. How long is the waiting time when 240 peopl

laiz [17]

Answer: The waiting time will be 32 minutes when 240 people in line.

Step-by-step explanation:

Let us assume that the waiting time is directly proportional to the number of people in the queue.

Equation of direct proportion between variables x and y : $\dfrac{x_1}{y_1}=\dfrac{x_2}{y_2}$

Put $x_1=20,\ y_1=150,\ y_2=150$ to find $x_2$ .

$\dfrac{20}{150}=\dfrac{x_2}{240}\\\\\Rightarrow\ x_2=\dfrac{20}{150}\times240\\\\\Rightarrow\ x_2=32$

Hence, the waiting time will be 32 minutes when 240 people in line.

3 0

2 years ago

Read 2 more answers

PLS HELP MY HWS DUE IN 30 MINS AND PLS SHOW WORK TY <br> find each missing measure <br> m m

bezimeni [28]

Answer:

measure is the angle right- if so it's 76 each

180-28=152

152÷2=76

5 0

2 years ago