1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
PSYCHO15rus [73]
3 years ago
9

How do i solve by using substitution​

Mathematics
1 answer:
elena55 [62]3 years ago
3 0

Answer:

a = 0, b = 3

Step-by-step explanation:

3a + b = 3

b = - 3a +3

2a - 5b = - 15

2a - 5(-3a + 3) = - 15

2a + 15a - 15 = - 15

17a = 0

a = 0

b = -3a +3 = - 3 *0 +3 = 3

You might be interested in
Loretta grew 54 watermelons in her garden last year. This year, that number increased by 5/9. Which expression shows the number
Mars2501 [29]

Answer:

54+\frac{5}{9}\times 54

Step-by-step explanation:

We are given that

Loretta grew  watermelons in her garden last year=54

We have to find the expression which shows the number of watermelons Loretta grew this year.

To find the expression which shows the  number of watermelons Loretta grew this year by adding watermelons grew in her garden last year and number of watermelons increased .

According to question

5/9 of 54=\frac{5}{9}\times 54

Therefore, the expression which shows the  number of watermelons Loretta grew this year

=54+\frac{5}{9}\times 54

6 0
2 years ago
The local high school is hosting an ice cream social for new students. They record the ice cream choices of the students through
Step2247 [10]
Apex Students Answer is 3/7
7 0
3 years ago
Winnie can walk 2 miles in 30 minutes. How many miles can she walk in 2 hours? (Remember 1hr = 60 min) A. 2 B. 4 C. 6 D. 8
Sati [7]
The answer is D-8.

If Winnie walks 2 miles in 30 minutes, 30 minutes is half an hour so for 1 hour which is 60 minutes, she can walk 4 miles, 90 minutes she can walk 6 and for 120 minutes which is 2 hours she can walk 8.

So all I did was multiply 2 by 4 and got 8. The number 4 came from the thought that 2 hours have 4 sets of 30 minutes
3 0
3 years ago
A circle had a sector with area 33pi and central angle of 11/6pi radians
MissTica

Answer:

The area of the circle is 36\pi\ units^{2}

Step-by-step explanation:

we know that

The area of a circle subtends a central angle of 2\pi radians

so

By proportion find the area of the circle

\frac{33\pi }{(11\pi /6)}=\frac{x}{2\pi}\\ \\ x=2\pi*( 33*6)/11\\ \\x=36\pi\ units^{2}

3 0
3 years ago
Read 2 more answers
Three kids are dividing a pizza with a total of 8 pieces. How many pieces can each kid
Alex

Answer:

Each kid can have 2 pieces

Step-by-step explanation:

8 / 3 = 2.67

6 0
3 years ago
Other questions:
  • Use the graph to determine the function's domain and range. Explain your answer.
    7·1 answer
  • Define the term probability
    10·2 answers
  • What is the area of the triangle portion of one end of the roof
    6·2 answers
  • What number comes next 2000018_28 ???
    15·2 answers
  • Simplify y 2 + 4y - 16y + 3y 2.
    11·2 answers
  • Three bags of rice weigh 90 kgs. How much do 9 bags weigh?
    11·2 answers
  • The following figure shows \triangle ABC△ABCtriangle, A, B, C with side lengths to the nearest tenth. Triangle ABC. Side AC meas
    14·1 answer
  • K divided by 11 is 7 <br><br> Solve for k<br><br> k= ?
    5·1 answer
  • The members of a book club spend the same amount of money for refreshments at each meeting. At one meeting they bought 6 bagels
    8·1 answer
  • At a balloon festival, 268 people
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!