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
Scrat [10]
3 years ago
9

If 2a + b = 13 and 3c-6a = 5, what is the value of b + c?

Mathematics
2 answers:
ElenaW [278]3 years ago
7 0

Step-by-step explanation:

Solve the first eqn for b, b=13–2*a, and the 2nd for c, c=(6*a+5)/3. Then

b+c=13–2*a+(6*a+5)/3=13–2*a+2*a+5/3=44/3. We see that b+c has a definite value because the terms in a cancel.

FinnZ [79.3K]3 years ago
4 0

Answer:

44/3 (a fraction)

Step-by-step explanation:

If 2a + b = 13. Equation 1 and

3c – 6a = 5. Equation 2.

From Equation 1.

2a + b = 13 so

2a = 13 - b so

a = (1/2)(13 - b). Equation 3.

Substitute a from Equation 3 into Equation 2:

From Equation 2:

3c - 6a = 5 or

3c - 6[ (1/2)(13 - b) ] = 5 or

3[ c - 2(1/2)( 13 - b ) = 5 so

3[ c - ( 13 - b ) ] = 5

Expanding:

c + b - 13 = ( 5/3)

Therefore...

b + c = ( 5/3 ) + 13 or

b + c = [ (13)(3) + 5 ]/( 3 ) so

b + c = ( 44 )/( 3 ) = ( 44/3 )

You might be interested in
HELP I WILL MARK BRAINLIEST
Ede4ka [16]

Answer:

the answer is A.

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
What are the coordinates of E??
Paraphin [41]

Answer:

(10, 1)

Step-by-step explanation:

It tells you that when you translate it you add 2 to the x-coordinate and subtract 7 from the y-coordinate. This means that the point E, (8, 8), would become (8 + 2, 8 - 7) or (10, 1).

7 0
3 years ago
Read 2 more answers
Assuming that boy and girl babies are equally likely, what would be Kathy's probability of having at most one daughter if she
JulijaS [17]

Answer: 0.3125.

Step-by-step explanation:

  • The chance of having a boy is 0.5,
  • the chance of having a girl is also 0.5.

<u>Outcome 1: all boys</u>

boy  boy  boy  boy

0.5 * 0.5 * 0.5 * 0.5 = 0.0625

<u>Outcome 2: first child is a girl, all others are boys</u>

girl   boy   boy   boy

0.5 * 0.5 * 0.5 * 0.5 = 0.0625

<u>Outcome 3: second child is a girl, all others are boys</u>

boy   girl   boy   boy

0.5 * 0.5 * 0.5 * 0.5 = 0.0625

<u>Outcome 4: third child is a girl, all others are boys</u>

boy   boy   girl   boy

0.5 * 0.5 * 0.5 * 0.5 = 0.0625

<u>Outcome 5: fourth child is a girl, all others are boys</u>

boy   boy   boy   girl

0.5 * 0.5 * 0.5 * 0.5 = 0.0625

Therefore,

0.0625 + 0.0625 + 0.0625 + 0.0625 + 0.0625 = 0.0625 * 5 = 0.3125

4 0
2 years ago
Help!!!!!!!!!!!!!!!! The Question is attached below.<br>8+4 pts
Pie
Well the line is plotted on (1,1) so that would be my answer.
5 0
3 years ago
PLEASEEE I NEED HELPPP!!!!
taurus [48]

Answer:

#carry on learning

mark me as brainliest

Find a point-slope form for the line that satisfies the stated conditions. Slope , passing through (-5,4)

I really need this question answered

By:

I don't see a value for the slope. We need that to set the equation, otherwise I can write an unlimited number of equations that pass through (-5,4).

I'll assume a slope so that you can see how the procedure would work. I like 6, so we'll assume a slope of 6.

The equation for a straight line has the form y = mx + b, where m is the slope and y is the y-intercept, the value of y when x = 0. We want a line that has slope 6, so:

y = 6x + b

We need to find b, so substitute the point (-5,4) that we know is on the line:

4 = 6*(-5) + b and solve for b

4 = -30 + b

b = 34

The line is y = 6x + 34

4 0
3 years ago
Other questions:
  • Withdrawing $10 every week from an outstanding balance of $400
    12·2 answers
  • Solve the system of equations -5y+4x= 49 7y+2x= -23 Find X and Y<br> Will mark Brainlest
    11·1 answer
  • The value of m is equal to three times n divided by the difference of 4p and 5n. which of the equations below is equivalent to t
    8·1 answer
  • A t-shirt increased in price by 14. After the increase it was priced at £30. What was the original price of the t-shirt?
    14·2 answers
  • Need help with the slope​
    8·1 answer
  • The profit for a car company can be represented by the function P=−0.5 x² +4 x+ 12,
    10·1 answer
  • Who wants to help me with my homework? <br><br>anyone please? <br>​
    5·1 answer
  • What is the number for x <br> 5= x over 6
    6·1 answer
  • What else would need to be congruent to show that triangle ABC is congruent to triangle DEF by ASA?
    15·1 answer
  • The price p (in dollars) and the demand X for a particular clock radio are related by the equation X = 3000 -10p. Find and answe
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!