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boyakko [2]
3 years ago
15

Part C If you use 10^-4 as the power of 10, what is the mass of an average grain of rock salt?

Mathematics
1 answer:
sleet_krkn [62]3 years ago
6 0

Answer:

120 x 10^-4

Step-by-step explanation:Multiplying 1.2  by  10^2 and multiplying 10^-2  by  10^-2.Gives 120 x 10^-4  So, the mass of an average grain of rock salt is 120 x 10^-4  .

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What is the value of the expression 3p (4p +5) + 3 for p= -1 is<br>plzzzzzzzz i want it fast
AleksAgata [21]

Answer:

0

Step-by-step explanation

well at least thats my guess!

we have to go by bidmas. so you substitute first!

so its going to be: 3(-1)(4(-1)+5)+3

all I did is that I replaced all p's by -1 and then you multiply it!

so its gonna be: -3(-4+5)+3

you first solve what's in the brackets which is -4+5 so the answer is 1 like this: -3(1)+3 now its much simpler. all we have to do is to expand the bracket so its going to be -3+3 so the answer is 0!

7 0
3 years ago
What is the negative reciprocal of 7/3?
-BARSIC- [3]

Answer:

-3/7

Step-by-step explanation:

Negative reciprocal means to put a negative and sign and change the numerator and denominator to be in opposite places.

7/3 -> -3/7

Best of Luck!

8 0
2 years ago
Read 2 more answers
Let f(x)=4x and g(x)=(4)x−1+2 . Which transformations are needed to transform the graph of f(x) to the graph of g(x) ? Select ea
Inessa05 [86]

Answer:

horizontal translation 1 unit right  and vertical translation 2 unit up

Step-by-step explanation:

we are given

f(x)=4^x

g(x)=4^{x-1}+2

We can see that in place x , we have x-1

So, it is shifted horizontally right side by 1 unit

We have +2 added to f(x)-value

It means 2 is added to y-value

So, it is shifted vertically upward by 2 units

So, horizontal translation 1 unit right  and vertical translation 2 unit up

5 0
3 years ago
Read 2 more answers
Solve the quadratic equation:<br> 3x^2+x-5=0
adell [148]

3x²+x-5=0

a = 3, b = 1, c= -5

-> ∆ ( delta ) = b²-4ac = 61 > 0

-> x1 =( -b+√∆ )÷ 2a =...

x2 = (-b-√∆)÷2a =...

p/s: do your teachers teach you how to use ∆ ( delta ) in maths calculation ? i live in europe and our teachers teach us that way. however, it is a rịght and fast way. you should learn it.

4 0
2 years ago
Which of the following is a solution of the equation -5x + 2 = -13: answers: x=-9, x=75 x=3 x=-3
slamgirl [31]

Answer:

x= 3

Step-by-step explanation:

1. -5(3) + 2 = -13      

2. -15 + 2 = -13         <em>A positive times a negative will always equal a negative</em>

3. -13 = -13         <em>Whenever you add anything to a negative number, the                    </em>

<em>                            number becomes smaller   </em>

                     Ex:  -10, -9, -8, -7, -6, -5, -4, -3, -2, -1, 0, 1, 2, 3, ...........

                           <em>Although the number itself becomes smaller, its value    </em>

<em>                             becomes bigger       </em>

Hope this helps.

7 0
3 years ago
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