The dimensions of a block are 4m x 3m x 2m and the relative density is 2.7. what is its mass?

Answers

Answer 1

Answer: the density is defined as the quotient of the mass by the volume, lets calculate the volume, we have density, we can solve for the mass.
volume = 4*3*2 = 24 m^2
density = mass/volume
mass = density*volume
mass = 2.7*24
mass = 64.8
we don't know the units because we do not know the density units

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(?,3) is on the line y=2x+5 find the other coordinate

Answers

Think about this. What do the numbers in a coordinate stand for? They stand for X and Y. If you're trying to figure out what the X is, wouldn't you be solving for x? And didn't they just give you an equation? ;) First off, do you see how the "Y" value is given to you in the coordinate? All you have to do is substitute that 3 in for the "y" in the equation! 3=2x+5. Hey.... that looks like a simple equation! First, you need to subtract 5 from the other side of the equation. Now you're left with 2x=-2. Divide both sides by 2, and you get that x=-1. Now, just substitute that "x' value into the coordinate, and your answer should come out to be (-1, 3). :D

What 2 numbers multiplied equal -48 and 2 numbers added equals -2

Answers

-8 and 6.

work: -8 x 6 = -48
-8 + 6 = -2

Answer:

6 and -8

Step-by-step explanation:

6x-8=-48

6+(-8)=-2

to find these number list what numbers you multiply together to get -48 but if you add them together u get -2

since in multiplication the 48 has a negative sign the one number is negative the other is positive

and since in addition the 2 is negative then the bigger number is also negative

2x-24=-48 but 2+(-24)=-22 wrong

3x-16=-48 but 3+(-16)=-13 wrong

4x-12=-48 but 4+(-12)=-8 wrong

--->6x-8=-48 and 6+(-8)=-2 correct

A+(-b) where a=4 and b=2

Answers

Answer:

The sum of a and (-b) is 2

Step-by-step explanation:

method 1:First, we take the negate(negative) of b to get -2. Then, we take the sum of 4 and -2 to get 2.

method 2: since adding a negative is the same as subtracting a positive, we get 4-2, which is 2.

Raymond bought a used truck for $18,800. If the sales tax in his state is 7 percent, what was the final price for his car?

Answers

Answer:

$1316

Step-by-step explanation: You would multiply 18,800 by 0.07 and Your would get $1316

Solve 4x = 16 for x.
x =

Answers

Well what ever you do to one side, you do to the other.
Your goal is to get the x alone
in order to do that we divide both sides by 4
4x = 16
÷4 = ÷4 The left side cancels out and the right side gets solved
********* because 16 ÷ 4 = 4 :)
x = 4

And there's your answer
x = 4

When in doubt, eat a pineapple :)

Just divide both sides by 4.

4x / 4 = 16 / 4

x = 4

Write the quadratic equation in standard form. What is the value of b 2 - 4ac?1 = 2x 2 + 7x

Answers

b^2 - 4ac > 0
2x^2 +7x -1 =0
b =7 a=2 c= -1
b^2 - 4ac = 7^2 - 4*2*(-1)
= 49 + 8
= 57

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