In scientific notation, what is the sum of 2.3 times 10^{-3} and 5.4 times 10^{-4}?a. 2.84 times 10^{-3}b. 5.63 times 10^{-3}c. 7.7 times 10^{-7}d. 12.42 times 10^{-12}

Answers

Answer 1

Answer: 2.3 x 10⁻³
5.4 x 10⁻⁴

It is better to add this using standard form because these two have different decimal places.

2.3 x 10⁻³ ⇒ 0.00230
5.4 x 10⁻⁴ ⇒ 0.00054
0.00284

0.00284 in scientific notation is 2.84 x 10⁻³

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A pair of dice is rolled. What is the probability that a 3 shows up on the second one?

Answers

1/12 since most die are 6 sided the first dice does not matter to the 3 but must be included. so 2, 6 sided die are rolled and 6 +6 equals 12. the probability is 1/12

What is 34+p+112=78-7

Answers

Simplify both sides of the equation34+p+112=78-734+p+112=78+ - 7(P) + (34+112) = (78+ - 7 )Combine like termsP+146=71Subtract 146 from both sidesP+146-146 = 71-146P= -75I do it for you step by step so you the teacher can see where you found that answer . It's not just put -75 , that's not help .So let me know if you got it or not ?

What mathematical operation does a fraction represent?

Answers

It represent division

A fraction represents division

Layla spent 25 minutes onher math homework and
30 minutes on her social
studies homework. Elijah
spent 3 times as much time
on his homework. Which
expression represents the
number of minutes that Elijah
spent on his homework?
A 25 + (30 X 3)
B 25+ 30 + 3
C 3 x 25 + 30
D 3 x (25 + 30)

Answers

Answer:

Step-by-step explanation:

25+30= time Layla spent. 3x time layla spent = elijah's time

Answer:

I would say letter D because Elijah spent 3 times as much time on his homework as layla . Therefor layla's total minutes of homework would be 25+30 = 50 times 3 would then equal elijahs total number of minutes

Step-by-step explanation:

Based on the given inequality statement, which statement correctly describes where the values are located on a number line relative to each other? −19<−16 Select from the drop-down menu to correctly complete the statement.-19 is located on the left, on the right, on the same position on a number line.

(;

Answers

As can be seen in the figure attached, -19 is located on the left of -16.

Every point of a number line is assumed to correspond to a real number, and every real number to a point. So as we love leftwards on the number line, the values keep on decreasing. Similarly while moving rightwards on the number line, the values keep on increasing.

So, because it is known that -19 < -16,

-19 is located on the left of -16.

What is 36/40 as a percentage and can you show me how to work it out as well please thanks x

Answers

36/40=90
36/40=0.9
0.9*100=90

36/40 = 90%

work
36/40= 0.9
0.9x100 =90

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