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Brums [2.3K]
3 years ago
7

The system of equations is given:

Mathematics
1 answer:
Ainat [17]3 years ago
7 0

Answer:

45

Step-by-step explanation:

You might be interested in
How many different three digit odd numbers can be formed from the digits 1 2 3 4?
melomori [17]
1.) 3124

2.) 3214

3.) 3412

4.) 1432

5.) 1342

6.) 1234

7.) 1423

I hope I helped
4 0
3 years ago
11x - 3 + 4x greater than or equal to 142 1/2
oksian1 [2.3K]

Answer:

x > or equal to 9.7

Step-by-step explanation:

Don't let the inequality intimidate you.  Treat the > or equal sign like it is an equal sign.

Any thing you do on the right you must do on the left.

move 3 to other side

combine like terms

15x > or equal to 145.5

Divide both sides by 15

x > or equal to 9.7

4 0
3 years ago
Nvm bro i got the answer
KIM [24]
Ok and have a nice day
6 0
2 years ago
70 points and i’ll give brainliest!! please answer all the questions on the page! must show work and how you got the answer. ple
Bezzdna [24]

6. One variable only so pretty straightforward.

length-x+4

width-x

x+x+4=80

2x=76

x=38

x+4=42

answer: length 42cm and width 38cm

7. Another money problem!

n-# of nickels

q-# of quarters

n=3+q

0.05n+0.25q=2.85

Substitution works like a charm!

0.05(3+q)+0.25q=2.85

0.15+0.05q+0.25q=2.85

0.3q=2.7

q=9

n=3+q

n=3+9

n=12

answer: 9 nickels and 12 quarters

8. One variable situation again.

Ann's money-2b+9

Betty's money-b

b+2b+9=60

3b=51

b=17

2b+9=43

answer: Ann has $43 and Betty has $17.

9. # of red m&m's-x+1

# of blue m&m's-x

x+1+x=13

x=6

x+1=7

answer: 6 blue and 7 red m&m's

10. a-number of adult tickets

s-number of student tickets

a+s=785 ----> a=785-s

5a+2s=3280

5(785-s)+2s=3280

-3s=-645

s=215

a+s=785

a+215=785

a=570

answer: 215 children tickets and 570 adult tickets

3 0
3 years ago
Mike has 4 black marbles tom has 2 black marbles how many black marbles do they have in all​
kompoz [17]

Answer:

6

Step-by-step explanation:

4+2

4 0
3 years ago
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