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soldi70 [24.7K]
3 years ago
6

How many times greater is 8×10 to the 4 power than 4×10 to the -5 power

Mathematics
2 answers:
Ksju [112]3 years ago
8 0
8 x 10^4 = 80,000
4 x 10^-5 = 0.00004
jasenka [17]3 years ago
4 0

Answer:

2,000,000,000 times

...........

8*10^4=80000

4*10^-5=0.00004

80000/0.00004=2,000,000,000

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Alinara [238K]

The answer is C. half of 10 x 7


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3 years ago
If the black cloth absorbs heat energy, why was the ice cube at room temperature covered with the black cloth the slowest to mel
lozanna [386]
The cloth acts as insulation it doesn't matter the colour . And as to Black cloth attracting Heat this is only partially true if you put a black cloth in the room with no windows and the temperature of the room was 70° the cloth will not get any hotter black cloth absorbs infrared energy this makes it feel warmer
5 0
2 years ago
Alberto’s monthly income is $3,200. Part of Alberto’s monthly budget is shown in the table.
Sladkaya [172]

Using the percentage concept, it is found that 40% of Alberto’s income is used to pay for his rent and groceries.

<h3>What is a percentage?</h3>

The percentage of an amount a over a total amount b is given by a multiplied by 100% and divided by b, that is:

P = \frac{a}{b} \times 100\%

In this problem:

  • Alberto’s monthly income is $3,200, hence b = 3200.
  • He spends 896 + 384 = $1280 in rent and groceries, hence a = 1280.

Then, the percentage is given by:

P = \frac{1280}{3200} \times 100\% = 40\%

More can be learned about the percentage concept at brainly.com/question/10491646

7 0
1 year ago
A piece of land is shaped like a right triangle. Two people start at the right angle at the same time, and walk at the same spee
sweet [91]

Answer:

1 m/s

Step-by-step explanation:

the area of the triangle = A = ¹/₂ab

where a is the distance covered by the first person and b is the distance covered by the second person. since they walk at the same speed, then a = b, so our formula can be changed to A = ¹/₂x²

now we find the derivative of both sides:

dA/dt = ¹/₂ ⋅ dx²/dt

dA/dt = ¹/₂ ⋅ 2x ⋅ dx/dt

dA/dt = x ⋅ dx/dt = x ⋅ velocity

we are told that x = 5 m, and dA/dt = 5 m²/s

velocity = dA/dt / x

velocity = 5 m²/s / 5 m = 1 m/s

7 0
3 years ago
Rachel bought 7 cookies and 5 muffins. The equation 7c+5m=10.45 represents the amount of money she spent. Jack bought 3 cookies
malfutka [58]
M=1.25
c=0.6
I got this by creating a systems of equations and I used the substitution method
4 0
3 years ago
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