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Nastasia [14]
3 years ago
7

PLEASE HELP THIS IS MY LAST QUESTION!

Mathematics
2 answers:
bija089 [108]3 years ago
8 0

☆Concept:-

The Question is based on the law of exponents .

The law to be used in this question is

\boxed{\sf a^m\times a^n=a^{m+n}}

Solution:-

\\ \tt\longmapsto (9\times 10^{-4})^2

\\ \tt\longmapsto 9^2\times 10^{-4(2)}

\\ \tt\longmapsto 81\times 10^{-8}

  • Simplify

\\ \tt\longmapsto 8.1\times 10^{-7}

yawa3891 [41]3 years ago
8 0

Answer:

<u>It</u><u> </u><u>is</u><u> </u><u>8</u><u>.</u><u>1</u><u> </u><u>×</u><u> </u><u>1</u><u>0</u><u>^</u><u>-</u><u>7</u>

Step-by-step explanation:

{(9 \times  {10}^{ - 4} )}^{2}  \\  =  \{{9}^{2} \times  {10}^{( - 4 \times 2)}   \} \\  = 81 \times  {10}^{ - 8}  \\  = 8.1 \times  {10}^{ - 7}

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fiasKO [112]

Answer:

C) \displaystyle f(x) = 25x + 15; f(3) = 90

Step-by-step explanation:

15 → initial value [tip]

25x → $25 per haircut

I am joyous to assist you anytime.

5 0
3 years ago
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Which shows the mean, median, mode, and range for this set of data?
Brums [2.3K]
8.3,4.5,6.2,9.6,4.3,11.2,5.9,9.7,10.5

Mean: 
To find mean you do the same as you would to find an average. Add up all of the numbers and divide by how many numbers are there. So, 
8.3 + 4.5 + 6.2 + 9.6 + 4.3 + 11.2 + 5.9 + 9.7 + 10.5 = 70.2 
Then divide by 9 since you have 9 numbers.
70.2 / 9 = 7.8 

Median:
To find median you set up the data from least to greatest and cross out one number from each side until you are left with one number as the middle number.
4.3, 4.5, 5.9, 6.2, 8.3, 9.6, 9.7, 10.5, 11.2 
       4.5, 5.9, 6.2, 8.3, 9.6, 9.7, 10.5
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Mode is the most, meaning the number that appears the most in your set of data. In this case there is no mode because in your set there is no number that occurs more than once.

Hope this helps!
6 0
3 years ago
Elizabeth has 8 ounces of chopped vegetables in a mixing bowl. She needs to have a minimum of 50 ounces for a party-sized salad
Lorico [155]

Answer:

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Visual explanation

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take 8 from both sides

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She needs at least 14 cups of chopped vegetables

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3 years ago
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mars1129 [50]

Answer:

1.5

Step-by-step explanation:

The rate of change is also the slope or m. This equation is in slope intercept form which is y=mx+b. m is the rate of change. m=1.5.

4 0
4 years ago
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Answer:

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scale factor is 0.25

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