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lora16 [44]
3 years ago
11

What is the solution? -10 = 2a – 4

Mathematics
2 answers:
DENIUS [597]3 years ago
6 0

Answer:

a =  - 3

Step-by-step explanation:

- 10 = 2a  -  4 \\ 2a - 4 =  - 10 \\ 2a = 4 - 10 \\ 2a =  - 6 \\ a =  -  \frac{6}{2}  \\ a =  - 3

JulijaS [17]3 years ago
6 0

Answer:

a = -3

Step-by-step explanation:

- 10 = 2a - 4

- 10 + 4 = 2a

- 6 = 2a

- 6/2 = a

- 3 = a

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What is the value of the expression?<br> -16+ 12 <br>(A)-28 <br>(B)-4 <br>(C)4 <br>(D)28 ​
Elden [556K]

Answer:

-16+12= -4

Step-by-step explanation:

When we mins 12 from 16 (16-12) we get 4.

Similarly. When we minus 16 from 12 (12-16) we get -4 because we choose the sign with the greater number.

6 0
2 years ago
HELP ITS SOO HARD also can you please explain how to get the answer to where a dummy can understand cuz well I’m a dummy
Ksenya-84 [330]

Answer:

244.92 square inches

Step-by-step explanation:

You just have to fill in the formula with the information they gave you.

They gave you the diameter for base circle so you divide that number in half to get the radius which is what you need for the formula represent as "r".

r=3

h=10

and you know pi is 3.14

so just plug in the numbers.

SA=2x3.14x3^2+2x3.14x3x10

SA=6.28x9+6.28x30

SA=56.52+188.4

SA=244.92

7 0
3 years ago
3x-7&gt;8 and -3x ≥-36 solve the inequality
tamaranim1 [39]

Good evening,

Answer:

x > 5

x ≤ 12

Step-by-step explanation:

Visualize as if the inequality symbols are equal signs and then solve it as you would for a normal equation, note if you divide by two negative numbers at all you then switch the sign.

On a number line, an inequality sign without the “equal to” is plotted with an open circe.

An inequality sign, with the “equal to” is plotted with a closed circle.

3x - 7> 8

Add seven on both sides, we do this because we want to eliminate the 7 from one side.

3x > 15

Divide both sides by 3, we do this because you want to get rid of the 3 from x.

x > 5

As for the second inequality.

Divide both sides by -3, as I mentioned earlier switch the side since we are dividing by two negative numbers.

x ≤ 12

For the greater than inequality x > 5, plot a open circle on 5 and draw the line going to the right.

For the less than or equal to inequality x ≤ 12, plot a closed cirlce on 12 and draw the line going to the left.

A unique trick is to graph the line based on the direction (right or left) the inequality symbol is pointing to.

7 0
3 years ago
Four letters are selected at random with replacement from the word MATHCOUNTS. What is the probability that the letters in the o
vovikov84 [41]

The no. of letters in the world (MATH) = 4

the no. of favourable outcomes = 10

hence‚ probability of getting the letters (MATH) 2/5

7 0
3 years ago
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Graph the line y = kx +1 given that point M belongs to the line.<br> M(2, -7)
IgorC [24]
Lol I like your da baby pfp.

Oh, and the answer is y = -4x + 1

Here’s the graph:

8 0
2 years ago
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