All categories

2 years ago

How do you write 3.9 × 103 in standard form?

Mathematics

2 answers:

Luden [163]2 years ago

7 0

3.9 x 103 is 401.7
answer,
4.017 x 10^2

Ierofanga [76]2 years ago

4 0

Answer:

3.9 x (1.03× $10^2$ ) or 4.017 x $10^2$

Step-by-step explanation:

3.9 x 103 can be written in standard form to:

3.9 x (1.03× $10^2$ ).

If you also wanted to solve the equation, the answer would be:

4.017 x $10^2$

You might be interested in

Smallest to largest <br> 60% 0.4 1/2

Wittaler [7]

0.4 then 1/2 then 60% is smallest to largest. Because if you make them all decimals then it would be 0.4 then 0.5 (1/2) then 0.6 (60%)

6 0

2 years ago

Which expression has a positive value?

Black_prince [1.1K]

Answer:

3 (negative 64 divided by 8) + 25 = 1

Step-by-step explanation:

Negative 4 + (negative 5) (negative 6) divided by (negative 3) = -4 + (-5)(-6)/(-3) = -4 + 30/-3 = -4 - 10 = -14

8 Left-bracket 10 divided by (2) (negative 2) Right-bracket = 8(10/((2)(-2)) = -20

3 (negative 64 divided by 8) + 25 = 3(-64/8) + 25 = 3(-8) + 25 = -24 + 25 = 1

Negative 2 (negative 5) (negative 3) divided by 10 = (-2)(-5)(-3)/10 = -3

The only positive value here is 1, which is a result of 3 (negative 64 divided by 8) + 25

6 0

3 years ago

Read 2 more answers

Please help to solve this question

sweet-ann [11.9K]

Answer:

10,972yd²

Step-by-step explanation:

the area of a triangle formula is base×height ÷ 2

104×211÷2 = 10972

6 0

2 years ago

NEED HELP ASAP PLEASE I CANT FAIL

kati45 [8]

Answer:

220 miles

Step-by-step explanation:

65 miles per hour for 2 hours — 65+ 65 = 130

60 miles per hour for 1.5 hours — 60 (for the 1 hour) + 30 (for the half hour) = 90

130 + 90 = 220

7 0

3 years ago

Read 2 more answers

A restaurant operator in Accra has found out that during the lockdown,if she sells a plate of her food for Ghc 20 each,she can s

ella [17]

The demand equation illustrates the price of an item and how it relates to the demand of the item.

The slope of the demand function is -1/2
The equation of the demand function is: $R(x) = (300 - 10x) \times (20 + 5x)$
The price that maximizes her revenue is: Ghc 85

From the question, we have:

$Plates = 300$

$Price = 20$

The number of plates (x) decreases by 10, while the price (y) increases by 5. The table of value is:

$\begin{array}{cccccc}x & {300} & {290} & {280} & {270} & {260} \ \\ y & {20} & {25} & {30} & {35} & {40} \ \end{array}$

The slope (m) is calculated using:

$m = \frac{y_2 - y_1}{x_2 - x_1}$

So, we have:

$m = \frac{25-20}{290-300}$

$m = \frac{5}{-10}$

$m = -\frac{1}{2}$

The equation of the demand is as follows:

The initial number of plates (300) decreases by 10 is represented as: (300 - 10x).

Similarly, the initial price (20) increases by 5 is represented as: (20 + 5x).

So, the demand equation is:

$R(x) = (300 - 10x) \times (20 + 5x)$

Open the brackets to calculate the maximum revenue

$R(x) =6000 + 1500x - 200x - 50x^2$

$R(x) =6000 + 1300x - 50x^2$

Equate to 0

$6000 + 1300x - 50x^2 =0$

Differentiate with respect to x

$1300 - 100x =0$

Collect like terms

$100x =1300$

Divide by 100

$x =13$

So, the price at maximum revenue is:

$Price= 20 + 5x$

$Price= 20 + 5 * 13$

$Price= 85$

In conclusion:

The slope of the demand function is -1/2
The equation of the demand function is: $R(x) = (300 - 10x) \times (20 + 5x)$
The price that maximizes her revenue is: Ghc 85