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nexus9112 [7]
2 years ago
15

Work out (8×10^-2)−(4×10^-4) Give your answer in standard form.

Mathematics
2 answers:
creativ13 [48]2 years ago
8 0
The answer is -39,200

Explanation:
If you do (8x10^-2) that would = 800
And then if you do (800 - 4 x 10^-4) = 10 x 10 x 10 x 10 = -39,200
tiny-mole [99]2 years ago
7 0

Answer:

7.96 x 10^2

Step-by-step explanation:

Move the decimal so there is one non-zero digit to the left of the decimal point. The number of decimal places you move will be the exponent on the

10

. If the decimal is being moved to the right, the exponent will be negative. If the decimal is being moved to the left, the exponent will be positive.

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fredd [130]

Answer: D . N(t) = 3 + (0.25t)^3 - 8(1.06)^t

Step-by-step explanation:

Given : Jenny studied the characteristics of two species of bacteria. The number of bacteria of species A, A(t), after t hours is represented by the function,

A(t) = 5 + (0.25t)^3

The number of bacteria of species B, B(t), after t hours is represented by the function, B(t) = 2 + 8(1.06)^t

Then, the difference in the number of bacteria, N(t), of both the species after t hours will be :-

N(t)=A(t)-B(t)\\\\=5 + (0.25t)^3-(2 + 8(1.06)^t)\\\\=5 + (0.25t)^3-2-8(1.06)^t\\\\=5-2 +(0.25t)^3-8(1.06)^t\\\\=3+(0.25t)^3-8(1.06)^t

Hence, the correct answer should be : D . N(t) = 3 + (0.25t)^3 - 8(1.06)^t

7 0
3 years ago
Anyone good at trigonometry?<br> I need a tutor or something cause I suck
SVEN [57.7K]

Answer:

I'll help if you need it.

Step-by-step explanation:

5 0
3 years ago
Find the quotient for 7.868+1.4
Ira Lisetskai [31]

Answer:

9.268

Step-by-step explanation:

7 0
3 years ago
Order from least to greatest 1.25, 1.52, 1.02, 1.50
marusya05 [52]

Answer:

1.02 1.25 1.50 1.52.

Step-by-step explanation:

|•-•|

7 0
2 years ago
Read 2 more answers
Plz help
Mazyrski [523]

Answer:

12.

Step-by-step explanation:

This is how to round 12.36 to the nearest whole number. In other words, this is how to round 12.36 to the nearest integer.

12.36 has two parts. The integer part to the left of the decimal point and the fractional part to the right of the decimal point:

Integer Part: 12

Fractional Part: 36

Our goal is to round it so we only have an integer part using the following rules:

If the first digit in the fractional part of 12.36 is less than 5 then we simply remove the fractional part to get the answer.

If the first digit in the fractional part of 12.36 is 5 or above, then we add 1 to the integer part and remove the fractional part to get the answer.

The first digit in the fractional part is 3 and 3 is less than 5. Therefore, we simply remove the fractional part to get 12.36 rounded to the nearest whole number as:

12

5 0
3 years ago
Read 2 more answers
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