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Mars2501 [29]
3 years ago
8

You might need:

Mathematics
1 answer:
PtichkaEL [24]3 years ago
5 0

Answer:

Sodium ion

Step-by-step explanation:

Hope this helps!

You might be interested in
The equation of a circle is given by (x + 3.5) ^ 2 + (y - 2.82) ^ 2 = 25 What is the area of a 52 degrees sector of this circle?
Sunny_sXe [5.5K]

Answer:

≈ 11.34 units²

Step-by-step explanation:

The equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h, k) are the coordinates of the centre and r is the radius

(x + 3.5)² + (y - 2.82)² = 25 ← is in standard form

with r² = 25 ⇒ r = \sqrt{25} = 5

The area (A) of the sector is calculated as

A = area of circle × fraction of circle

   = πr² × \frac{52}{360}

   = π × 5² × \frac{52}{360}

   = π × 25 × \frac{52}{360}

   = \frac{25(52)\pi }{360}

   ≈ 11.34 units² ( to the nearest hundredth )

3 0
3 years ago
What is the mean (average) of 2,4,5,6,8
irina1246 [14]

Answer:

5

Step-by-step explanation:

In order to figure out average, we need to add up all the numbers. So adding 2, 4, 5, 6, and 8 gives us 25. We now divide that total by the total number of terms we used to reach 25. So since we had 5 numbers, we divide 25 by 5 to get an average of 5.

6 0
3 years ago
Read 2 more answers
An image of a book shown on a website is 1.5 inches wide and 3 inches tall on a computer monitor. The actual book is 9 inches wi
valentina_108 [34]

Answer: 1 inches = 6 inches

Step-by-step explanation:

From the question, we are informed that an image of a book shown on a website is 1.5 inches wide and 3 inches tall on a computer monitor and that the actual width of the book is 9 inches.

Based on the above analysis, the scale that is being used for the image is:

= 1.5/9

= 1/6

= 1:6

Therefore, the scale is used is:

1 inches = 6 inches

3 0
4 years ago
Point M belongs to AN , point N belongs to BM , AB = 18 in and AM : MN : NB = 1:2:3. Find MN.
yulyashka [42]

MN = 6 in

add the parts of the ratio, 1 + 2 + 3 = 6

divide AB by 6 to find 1 part of the ratio

\frac{18}{6} = 3 ← 1 part

AM = 3 in ← 1 part

MN = 2 × 3 = 6 in ← 2 parts

NB = 3 × 3 = 9 in ← 3 parts

and 3 + 6 + 9 = 18 in = AB


3 0
3 years ago
What number added to 2 leaves 3 less than 3/5 of 10
inysia [295]
X + 2 = 3/5(10) - 3
x + 2 = 6 - 3
x + 2 = 3
x = 3 - 2
x = 1 <=== ur number
7 0
3 years ago
Read 2 more answers
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