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Nana76 [90]
2 years ago
15

Convert this number expressed in standard form to scientific notation. 28,500,000 1. Move the decimal to create the coefficient:

2.8500000 2. Write in scientific notation: 2.85 × 10x What is the value of x in the scientific notation?
Mathematics
2 answers:
Oduvanchick [21]2 years ago
8 0

Answer:

2.85 x 10⁷

Step-by-step explanation:

suter [353]2 years ago
4 0

Answer:

The value of x is 7.

Step-by-step explanation:

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Karim began his day by drinking 1 cups of milk at breakfast. By the end of the day, he drank a total of 2
uranmaximum [27]

Answer:

Equation:

21 = 1 + m

Solution:

20 = m

Step-by-step explanation:

What we know:

  • Karim drank 1 cup of milk at breakfast
  • Karim drank a total of 21 cups of milk
  • m = the amount of milk, in cups, Karim drank after breakfast

We know that Karim drank 21 cups of milk in a day. In an equation, that would look like this:

21 =

What does 21 equal?

The amount of milk Karim drank at breakfast plus the amount of milk Karim drank after breakfast.

21 = milk at breakfast + milk after breakfast

Let's substitute what we know into this equation:

21 = milk at breakfast + milk after breakfast

21 = 1 + m

Now that we have our equation, let's solve.

21 = 1 + m

-1    -1

20 = m

Therefore, Karim drank 20 cups of milk after breakfast.

4 0
3 years ago
A bag contains three white marbles, two black marbles, and five red marbles. Find the probability of picking a black marble.
Sveta_85 [38]
Hope this helps you!

3 0
3 years ago
I cannot figure this out. Any help would be appreciated.
Lesechka [4]
So you are finding M
90+x+15+3x+15=180
4x=60
X = 15
LMN = 15+15
LMN = 30
hopefully this is correct :)
7 0
2 years ago
Find the total area for the regular pyramid.
hram777 [196]

Answer:

  • Option B

Step-by-step explanation:

Given is the hexagonal pyramid.

We know the radius of the base is same as its side.

<u>Find the base area:</u>

  • A = 3√3/2a²
  • A = 3√3/2*6² = 54√3

<u>Given the height and radius, find the side of the lateral triangular faces:</u>

  • \sqrt{8^2+6^2} =\sqrt{100} =10

Each of 6 triangles have sides 10, 10 and 6 units.

<u>Find the area using heron's formula:</u>

  • s = P/2 = (10*2 + 6)/2 = 13
  • s - a = s - b = 13 - 10 = 3
  • s - c = 13 - 6 = 7
  • A = \sqrt{s(s-a)(s-b)(s-c)} =\sqrt{13*3*3*7} =3\sqrt{91}

<u>Total surface area:</u>

  • S = 6*3\sqrt{91}+54\sqrt{3}  =18\sqrt{91}+54\sqrt{3}

Correct choice is B

3 0
2 years ago
This is hard i need help
taurus [48]

Answer:

a. 6  b. -2

Step-by-step explanation:

a. x^3 = 216

x = ³√216

x = 6

b. -n^3/4 = 2

-n^3 = 8

-n = ³√8

- n = 2

n = -2

3 0
3 years ago
Read 2 more answers
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