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
creativ13 [48]
3 years ago
11

2a+6b=100 what is 5a+15b=?

Mathematics
2 answers:
algol [13]3 years ago
8 0

Answer:

Step-by-step explanation:Simplifying

2a + 6b = 100

Solving

2a + 6b = 100

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-6b' to each side of the equation.

2a + 6b + -6b = 100 + -6b

Combine like terms: 6b + -6b = 0

2a + 0 = 100 + -6b

2a = 100 + -6b

Divide each side by '2'.

a = 50 + -3b

Simplifying

a = 50 + -3b

Damm [24]3 years ago
7 0

Answer:

5(50x - 3bx + 50 - a) or 5(a + 3b) (Depending on the question and what is asked)

Step-by-step explanation:

2a + 6b = 100

a = 50-3b

b = 50/3 - 1/3a

replace

5a + 15b =

5*50-3b + 15*50/3 - 1/3a =

5(50x - 3bx + 50 - a)

^This would be the answer if we use the same value of a and b from the 2a+6b=100 equation.

If we use a unknown value for a and b. Then, the answer would be 5(a + 3b).

You might be interested in
Pls help this is major, ill mark u brainliest
Lera25 [3.4K]

Answer:

105

Step-by-step explanation:

A=lw   A=(.5)πr²

to get the area of the shaded parts you have to subtract the area of the semicircle from the area of the rectangle

A=(16)(9)

A=144

A=\frac{(3.14)(5)^2}{2} A=\frac{(3.14)(25)}{2} A=\frac{78.5}{2}

A=39.25

subtract the areas

144-39.25=104.75

104.75 ≅ 105

4 0
2 years ago
PLEASE HELP ME OUT!!
andrey2020 [161]
Short answer A
This one is exactly the same (with number changes) as the last one. You cannot use t which is in time, to mix with pure numbers which in this case is grams. That means that both C and D are incorrect.

Now as with the last one, are you going to raise e to a minus number or a plus number? Remember that if e is raised to a plus number, the sample in this case will increase. You are watching a radioactive decay. The number has to be smaller. So B is eliminated. There is only one answer left and that's A. It should be correct.

A <<<<< answer
8 0
3 years ago
(w-2) (w+5) <br> I need help I don't understand ...
Phantasy [73]
<h3>Answer: w^2 + 3w - 10</h3>

===============================================

Work Shown:

Let x = w-2

This will allow us to replace the (w-2) with x to get...

(w-2)(w+5)

x(w+5)

x*w + x*5 ... distribute

w(x) + 5(x)

Now replace x with w-2 and distribute again

w(x) + 5(x)

w(w-2) + 5(w-2)

w*w + w*(-2) + 5*w + 5*(-2)

w^2 - 2w + 5w - 10

w^2 + 3w - 10

6 0
2 years ago
Read 2 more answers
Henry wants to paint the ceilings and the walls of his living room. One gallon of paint covers 450 ft squared. The rooms is 24 f
Mamont248 [21]
If you would like to know how many gallons of paint will Henry need to paint his living room, you can calculate this using the following steps:

the ceiling: 24 ft * 18 ft = 432 ft squared
walls: 2 * 24 ft * 9 ft + 2 * 18 ft * 9 ft = 2 * 24 * 9 + 2 * 18 * 9 = 432 + 324 = 756 ft squared

432 ft squared + 756 ft squared = 1188 ft squared

1 gallon of paint ... 450 ft squared
x gallons of paint = ? ... 1188 ft squared

1 * 1188 = 450 * x
1188 = 450 * x    /450
x = 1188 / 450
x = 2.64 gallons of paint

The correct result would be 2.64 gallons of paint.
6 0
3 years ago
What is the slope of a line PARALLEL to the graph?
SSSSS [86.1K]
If you mean parallel to another line, you have to find the the equation of that line. Lets just say it was y= 7x-2. To find the slope of a line parallel to that, then you look at the slope of that line, which in this case would be 7. The slope of a line parallel would have to be the same. So, I can't give you a direct answer because I can't see the graph but that is how you get the answer.
8 0
3 years ago
Other questions:
  • Suppose that a point moves along some unknown curve y = f(x) in such a way that, at
    12·1 answer
  • The right rectangular prism will be sliced perpendicular to its base along the dashed line. Select from the drop-down menus to c
    6·2 answers
  • -3x+18=7x what could you do to isolate the variable term to one side of the equation
    14·2 answers
  • The expanded form of this number.<br><br> 26,779
    15·1 answer
  • A rock has a mass of 84 grams and a volume of 12 cc what is density?
    5·2 answers
  • Hello can I have some help on this factorise question please 3a2 +7a <br> the 2 is a squared
    7·1 answer
  • Sam sells cars and earns 3.5% commission in sales. In one day he sold 3 of the same cars each for $21,500. How much did Sam earn
    11·1 answer
  • Evaluate (–1)8 + (–1)7 + –16 + –14 – (–1)2. A. 5 B. –3 C. –4 D. –23
    8·1 answer
  • I need to resolve this
    11·1 answer
  • PLZZ NEED HELP WITH THIS ILL MAKE YOU BRAINLIEST
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!