How do u do these equations?

Answers

Answer 1

Answer: First, i would look at the word sum. what does it mean by sum? the sum of two numbers is what? I think of it as sum=its an addition problem and the sum is what those two numbers added together equal. For example the sum of one and two is thee.

Lets say Matt's number is x.

So we got three numbers here; x, 7.5 and 38.2.

how about i simplyfy; "the sum of his number and 7.5 is 38.2"

What it is saying is that...

x and 7.5's sum is 38.2

if sum means it is an addition problem and 38.2 is the answer to this addition problem between 7.5 and x, even though you want to find x... then if you know this, your neext step is to translate this into an equation.

x plus 7.5 equals 38.2

x+7.5=38.2.

when it is an equation, you must subtract 7.5 by both sides. so it would be x=38.2-7.5

38.2-7.5 is... 30.7

that means x, Matt's number, is 30.7.

to do some these kinds of problems, you have to translate the sentences into an equation.

when it says the word product it is a multiplication problem

when a number is decreased, it is less than the original amount. so you are subtracting from the original number. so it would be "the number minus lets say 2 is equal to lets say four." that would mean the number is 6. x-2=4 is the equation.

I hope this helped out... I don't have the time to explain everything... this info may help...

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What is the greatest common factor of 12 and 18

Answers

the gcf is 6 because both 12 and 18 can be divided by 6.

the gcf is 2 because you cannot have a higher number

PLS HELPPPP Write a linear equation in point slope form for the line that goes through (-1,3) and (1,-9) 15 pts

Answers

Solution:

First find the slope

$Slope=(y2-y1)/(x2-x1)\nSlope=((-9)-(3))/((1)-(-1))\nSlope = (-12)/(2)\nSlope=-6\n$

Secondly, write the equation

$y=m(x-xo)+yo\ny=-6(x-1)+(-9)\ny=-6x+6-9\ny=-6x-3$

Answer:

$y=-6x-3$

Check:

$(-1,3)\ny=-6(-1)-3\ny=6-3\ny=3$

$(1,-9)\ny=-6(1)-3\ny=-6-3\ny=-9$

Hope this was helpful.

What is the surface area of the rectangular prism?

Answers

SA = (L*W*2)+(W*H*2)+(L*H*2)

Answer:

184cm is the answer

Max tossed a fair coin 3 times. What is the probability of getting heads in the first two trials and tails in the last trial?

Answers

When you toss a coin 3 times here is what can happen:
H=heads
T= Tails
HHH TTT
HHT TTH
HTH THT
HTT THH
Since 8 things can happen and only one of them is what you want, the probability is 1/8
Another way to think about it is each toss has 1/2 of coming up as you want it to.
Three tosses are 1/2 x 1/2 x 1/2 which is 1/8

$P\left( E \right) =\frac { 1 }{ 2 } * \frac { 1 }{ 2 } * \frac { 1 }{ 2 } =\frac { 1 }{ 8 }$

You could get this answer by creating a tree diagram or by thinking about the possibilities that exist.

Realm of possibilities with one toss:

H or T.

Realm of possibilities with two tosses:

H, H
H, T
T, H
T, T

Realm of possibilities with three tosses:

H, H, H
H, H, T <--- 1/8 chance of taking place
H, T, T
T, T, T
T, T, H
T, H, H
T, H, T
H, T, H

How is the 2 in the number 582 similar to the 2 in the number 528

Answers

they are both the same number.

What is the exponent on 10 when you write 5.3 in scientific notation

Answers

It's 1. Because 5.3 can't be simplified to any other scientific notation. It's 5.3 x 10^1

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