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3 years ago

14

How is the answer with a power of 15? I got -2 the first time

2 answers:

lakkis [162]3 years ago

8 0

That's the same answer I got 2

Irina18 [472]3 years ago

7 0

It's not entirely clear what the full problem is as it is cut off; however, it looks like you're using the speed of light (c) which is 3.00*10^8 meters per second. So you would use that instead of 3.00*10^(-9).

Doing so yields the following
c/lambda = (3.00*10^8)/(1.26*10^(-7)) = (3.00/1.26)*10^(8-(-7)) = 2.38*10^15
which fits with the result you have on the right side

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A pillow that usually costs $20 is marked down 45%. Table Use the table to find the new price of the pillow. $9 $11 $29 $33

sattari [20]

It would now cost $11. 45% of 20 is 9, therefore, you would subtract 9 from 20 (since it is getting marked down).

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4 years ago

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8^x=2 write down the value of x

e-lub [12.9K]

Answer:

x = $\frac{1}{3}$

Step-by-step explanation:

Using the rule of exponents

$a^m^{n}$ = $a^{mn}$

Note that 8 = 2³ and 2 = $2^{1}$ , then

$(2^3)^{x}$ = $2^{1}$ , that is

$2^{3x}$ = $2^{1}$

Since the bases on both sides are equal, equate the exponents

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4 years ago

Find the circumference of a circle whose area is 247 ft2.

gizmo_the_mogwai [7]

Answer:

B is the answer

Step-by-step explanation:

A = πr²

24π = πr²

24 = r²

24 = r²

$\sqrt{24}$ = r

r = $\sqrt{4}$ $\sqrt{6}$ = 2 $\sqrt{6}$

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3 years ago

Which choice is equivalent to the expression below?

alekssr [168]

Answer: OPTION A

Step-by-step explanation:

We need to remember that Product of powers property, which states that:

$(a^m)(a^n)=a^{(m+n)}$

Let's check the options:

A. For $5^9*5^{\frac{9}{10}}*5^{\frac{6}{100}}*5^{\frac{9}{1000}}$ you can apply the property mentioned before. Then:

$5^{(9+\frac{9}{10}+\frac{6}{100}+\frac{9}{1000})=5^{9.969}$

(It is the equivalent expression)

B. Add the exponents:

$5^9*5^{(\frac{9}{10}+\frac{9}{10}+\frac{6}{1000})=5^{10.806}$

(It is not the equivalent expression)

C. For $5^9*5^{\frac{96}{10}}*5^{\frac{9}{100}}}$ you can apply the property mentioned before. Then:

$5^{(9+\frac{96}{10}+\frac{9}{100})=5^{18.69}$

(It is not the equivalent expression)

D. We know that $5^{9.969}=9,290,347.808$ and we maje the addition indicated in this option, we get:

$5^9+5^{\frac{9}{10}}+6^{\frac{6}{100}}=1,953,130.37$

(It is not the equivalent expression)

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4 years ago

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Ms. Wilson surveyed her class of 36 students about their favorite ice cream flavors.

ruslelena [56]

Answer:

1 student.

Step-by-step explanation:

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9+24= 35

<em>--------------------------------------------------------------------------------------</em>

36-35=1

Only one student preferred vanilla ice-cream.

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2 years ago

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