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2 years ago

If 2.2x10^6 - 4.3x10^5 what does this equal

Mathematics

2 answers:

bearhunter [10]2 years ago

6 0

Answer:

If the decimal is being moved to the left, the exponent will be positive. 1.77×10 ...

Step-by-step explanation:

Arte-miy333 [17]2 years ago

3 0

Answer:

The answer is 1,770,000

Step-by-step explanation:

$2.2 \times 10 {}^{6 } - 4.3 \times 10 {}^{5}$

1. Orders of Operation. Exponents come first before multiplication. So do the exponents first.

2.2×1,000,000-4.3×100,000

2. Order of Operation. Mutilpication comes before subtraction.

2,200,000-430,000

3. Subtract

1,770,000

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A printer has a contract to print 100,000 posters for a political candidate. He can run the posters by using any number of plate

yulyashka [42]

Answer:

Step-by-step explanation:

From the given information;

Numbers of posters that can be printed in an hour = no of impression/hour × no of plate utilized in each impression.

= 1000x

Thus, the required number of hours it will take can be computed as:

$\implies \dfrac{100000}{1000x} \\ \\ =\dfrac{100}{x}$

cost per hour = 125

If each plate costs $20 to make, then the total number of plate will equal to 40x

∴

The total cost can be computed as:

$C(x) = (\dfrac{100}{x}) \times 125 + 20 x --- (1)$

$C'(x) = (-\dfrac{12500}{x^2}) + 20 --- (2)$

At C'(x) = 0

$\dfrac{12500}{x^2} = 20$

$\dfrac{12500}{20} = x^2$

$x^2= 625$

$x = \sqrt{625}$

x = 25

$C'' (x) = -12500 \times \dfrac{-2}{x^3} +0$

$C'' (x) = \dfrac{25000}{x^3}$

where; x = 25

$C'' (x) = \dfrac{25000}{25^3}$

C''(x) = 1.6

Thus, at x = 25, C'' > 0

As such, to minimize the cost, the printer needs to make 25 metal plates.

4 0

3 years ago

Maria Krisp, a licensed physical therapist assistant, earns an hourly

Masteriza [31]

9514 1404 393

Answer:

straight time: $699.20
overtime: $165.60
total pay: $864.80

Step-by-step explanation:

(a) Maria's straight time pay is ...

(38 h)×($18.40 /h) = $699.20

(b) Maria's overtime pay is ...

(6 h)×(1.5×$18.40 /h) = $165.60

$699.20 +165.60 = $864.80

8 0

3 years ago

You want to test the effect of light on the distribution of Artemia in your 35cm long testing chamber. If you measure the light

Dvinal [7]

Answer:

64.3 lumens

Step-by-step explanation:

Data provided in the question:

Length of the testing chamber = 35 cm

Light at one end = 10 lumens

Light at other end = 200 lumens

now,

since the variation is linear,

therefore, the gradient of the variation

= $\frac{200-10}{35}$

= 5.43

also,

the darkest end is the end with 10 lumens

therefore,

The lumens at 10 cm from the darkest end

= 10 + 5.43(10)

= 10 + 54.3

= 64.3 lumens

6 0

3 years ago

Y-intercept: (0, y=-2x2 – 16x – 34 What is the y intercept?

tekilochka [14]

Answer: Solve for Y

y = -16x - 38

And then y intercept is

(0, -38)

Step-by-step explanation:

8 0

1 year ago

Read 2 more answers

Help please!!! Fast!! The answer choices are: 30 ft 40 ft 50 ft 70 ft

valkas [14]

50 the answer is most likely 50

6 0

2 years ago