2 years ago

PLEASEE IF YOU COULD ANSWER 5 QUESTIONS WILL BE HELPFULL

2 answers:

8 0

The answer to 1. (1, -2)
The answer to 2. (-2, -2)
The answer to 3. (4, -1/2)
The answer to 4. (3, -1/2)
The answer to 5. No solution.

Masteriza [31]2 years ago

6 0

Question 1 - x = 1 and y = -1

Question 2 - x = 4 and y = 20

Question 3 - x = 2/9 and y = -1/9

Question 4 - x = 2/9 and y = -2/9

Question 5 - x = 49/4 and y = 49/2
I say C

You might be interested in

Simplity 5x 2x + 7

babymother [125]

Answer:

7x + 7

Step-by-step explanation:

7x + 7

5x + 2x = 7x

7x + 7

3 0

3 years ago

Read 2 more answers

A team of runners ran a relay race. Each runner ran 7 1/2 kilometers. The total length of the race was 45 kilometers. Write and

Travka [436]

Answer:

6 runners

Step-by-step explanation:

Each runner ran 7.5 km. If there were n runners, then (7.5 km)n = 45 km.

Solve this for n by dividing 7.5 km into 45 km:

n = 6

There were 6 runners.

7 0

2 years ago

a quantity of ethanol is cooled from 47.9° C to 12.3°C and releases 3.12 KJ of heat. what is the mass of the ethanol sample?

victus00 [196]

Answer:

35.9 grams

Step-by-step explanation:

We use the formula:

$q=m*C_p*\Delta T$

Where

q is heat released

m is mass

C_p is the constant 2.44

ΔT is change in temperature

We put the info in the formula and solve for m (mass):

$q=m*C_p*\Delta T\\-3.12 = m*2.44(12.3-47.9)\\-3.12*10^3=m*(-86.864)\\m=35.9$

The mass of ethanol is 35.9 grams

8 0

3 years ago

Tell whether the ratios form a proportion. 7 /16 2 /6 yes no

svlad2 [7]

No they are have a great day

8 0

3 years ago

15/8 + (-3 4/7) plz help me.

givi [52]

I think it’s -1.69642857143

4 0

3 years ago