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ivanzaharov [21]
3 years ago
14

-3a + 6b= a + 4b Write a formula for f (a) in terms of a.

Mathematics
2 answers:
belka [17]3 years ago
7 0

Answer:The formula for a can be calculated by the following steps;

Step-by-step explanation:

-3a-a=4b-6b

-4a=-2b

cancelling the negative sign;

4a=2b

a=2b/4

a=b/2

Mariulka [41]3 years ago
3 0

Answer:

f(a)=2a

Step-by-step explanation:

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find the equation of the line passes through the point (-1,2) and making an angle of 45° with the line x-y+1=0​
Vlad1618 [11]

Answer:

Step-by-step explanation:

line given is x-y+1= 0

you can rewrite it in slope intercept y=mx+b where m is the slope, and b is the y-intercept where the line meets the y-axis

x-y+1 =0 subtract x and 1 from both sides of the equation

-y = -x-1 multiply both sides by -1

y = x+1 so the slope of this line is 1 and the y-intercept is 1

If you draw this line you can see that there are actually 2 lines that form 45° angles with y=x+1 and pass through (-1, 2), one is vertical x= -1 and one horizontal y =2

8 0
3 years ago
I marked all 3 parts. I need to know part C (the shaded part). anybody mind helping?​
Mnenie [13.5K]

Answer:

Area of shaded part ABCEF = 66 sq.cm

Step-by-step explanation:

AB = 8cm

CD = 8cm

Let DE = x cm

CE = 3x cm

CD =  CE + DE = 8cm

        x + 3x = 8

4x = 8

x = 8/4 = 2 cm

DE = 2cm

CE = 3 * 2 = 6 cm

Area of triangle ADE = 1/2 * base * height

                                   = 1/2 * DE * AD

                                    = 1/2 * 2 * 11 = 11 sq. cm

Area of triangle AEF = Area of triangle ADE = 11 sq. cm

Area of Rectangle ABCD =  l * b = 8 * 11 = 88 sq.cm

Area of shaded part ABCEF =  Area of Rectangle ABCD - (Area of triangle AEF + Area of triangle ADE)

    = 88 - ( 11 + 11 )  = 88 -22 = 66 sq.cm

6 0
3 years ago
After a sleepover, 3/4 of a large pepperoni remained. The next day, he ate 1/8 of what was left over. What fraction of a large p
jekas [21]

Answer:

9/100

Step-by-step explanation:

You find 1/8 of 3/4 which is 9/100

4 0
3 years ago
Solve the system of two equations 2y=8 and 15y=2x-4
damaskus [11]
To find y, divide the first equation by 2.
  y = 4

To find x, use that value for y in the second equation. Add 4, then divide by 2.
  15·4 = 2x -4
  60 +4 = 2x
  64/2 = x = 32

The solution is (x, y) = (32, 4).

8 0
3 years ago
a bag contains 4 green marbles, 6 red marbles, 14 orange marbles, 5 brown marbles, and 8 blue marbles. you choose a marble, repl
Triss [41]
By what is P i assume you mean what is the probability.
Well probability is always the specific group divided by the total
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Before we move on notice the question says that the marble is replaced after being chosen meaning the total stays the same for every pick
Red Marbles Probability:
red marbles/ total
6/37 or if you divide it out 0.162
Blue Marbles Probability:
blue marbles/total
8/37 or 0.216


8 0
3 years ago
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