All categories

3 years ago

3a - 6a + 2 = 8a + 20 - 5a pls help!!! step by step!! URGENT!

Mathematics

2 answers:

Dahasolnce [82]3 years ago

6 0

Answer:

a = -3

Step-by-step explanation:

3a−6a+2=8a+20−5a ( original equation)

Step 1: Simplify both sides of the equation.

3a−6a+2=8a+20−5a

3a+−6a+2=8a+20+−5a

(3a+−6a)+(2)=(8a+−5a)+(20)(Combine Like Terms)

−3a+2=3a+20

Step 2: Subtract 3a from both sides.

−3a+2−3a=3a+20−3a

−6a+2=20

Step 3: Subtract 2 from both sides.

−6a+2−2=20−2

−6a=18

Step 4: Divide both sides by -6.

−6a/−6 = 18/-6

a=−3

Lubov Fominskaja [6]3 years ago

4 0

The answer is
a = -3

You might be interested in

What's additive inverse? Like for example this expression 2-16 what's the additive inverse??

Stels [109]

Answer: The multiplicative inverse is 1/2 the addition inverse is -2

Step-by-step explanation:

Since the inverse of multiplication is division, use a fraction. The inverse of addition is subtraction.

4 0

3 years ago

Read 2 more answers

Which equation represents the graphed function?

Neporo4naja [7]

Answer:

y=1/4x-2

Step-by-step explanation:

the first y axis number it touches is -2 and the slope is 1/4.

5 0

2 years ago

Read 2 more answers

The Sum of twice a number and 5 is at most 15. What are the possible values for the number?

NISA [10]

Let's call that number x, twice the number will be 2x, sum of it and 5 is, 2x+5. So if this expression is at most 15, it means, it can be only less than 15 and equal to 15. Let's show this as an inequality.

$2x+5\le 15$

Let's solve.

$2x+5\le 15\\ \\ 2x\le 15-5\\ \\ 2x\le 10\\ \\ x\le \frac { 10 }{ 2 } \\ \\ x\le 5$

$x\quad \in \quad \left[ -\infty ,5 \right]$

If the number is a natural number. The values it can take is, $x\quad \in \quad \left[ 0,1,2,3,4,5 \right]$

6 0

3 years ago

Read 2 more answers

A bicycle manufacturing plant is producing the first few frames for their new electric bicycle design. The first batch of 60 fra

Dmitry_Shevchenko [17]

Answer:

a) 131/450

b) 1233/1276

Step-by-step explanation:

P(bad) = P(1st batch)*P(bad 1st batch ) + P(2nd batch )*P(bad 2nd batch) + P(3rd batch )*P(bad 3rd batch)

p(bad) =(60/360)*(1/3) + (120/360)*(1/4 ) + (180/360)*(1/5)

= 43/180

And that of P(good )

= 1 - 43/180

= 137/180

P(defective) = P(bad)*P(defective /bad) + P(good)*P(defective /good)

= (43/180)*(9/10) + (137/180)*(1/10)

= 131/450

P(Bc I Dc ) = P(good)*P(not defective |good) / P(not defective)

= (137/180)*(1 - 1/10) / (1 - 131/450)

= 1233/1276

5 0

3 years ago

Alice and Claire go apple picking. When they are done, Claire has 3 times as many apples in her basket as Alice has in hers. (No

ElenaW [278]

Answer:

6 apples, 21 apples, 30 apples respectively

Step-by-step explanation:

Let us first start by writing expressions so that we can easily solve for the problems below.

Let us suppose Alice is x. In this case, Claire has 3 times Alice's apples, so 3x.

1. If Alice has 2 apples (x), then Claire has 3x

3*2=6 apples

Claire has 6 apples.

2. If Alice has 7 apples (x), then Claire has 3x

3*7=21 apples

Claire has 21 apples.

3. If Alice has 10 apples (x), then Claire has 3x

3*10=30 apples

Claire has 30 apples.

I hope this helps! Please let me know if you have any further questions :)

5 0

3 years ago