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iragen [17]
4 years ago
11

Raj adds 4 more layers of 4 unit how many

Mathematics
2 answers:
sweet-ann [11.9K]4 years ago
7 0
I believe the correct answer is 8
satela [25.4K]4 years ago
6 0
I think it's 8 because 4+4=8
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Solve for X and Y using substitution.<br> 1)<br> 12x +y = 36<br> x+4y=24
vovikov84 [41]
{x,y}={24,12} I think that is the answer to this question....
8 0
3 years ago
What is the equation of a vertical ellipse with a major axis= 20 and a minor axis = 14?​
Sunny_sXe [5.5K]

\bold{\text{Answer:  b.}\quad \dfrac{y^2}{100}+\dfrac{x^2}{49}=1}

<u>Step-by-step explanation:</u>

The ellipse is vertical so y has the biggest radius.

Major axis (y) = 20 so the y-radius is 20/2 = 10

Minor axis (x) = 14 so the x-radius is 14/2 = 7

The equation of an ellipse is:   \dfrac{(x-h)^2}{a^2}+\dfrac{(y-k)^2}{b^2}=1   where

  • (h, k) is the center of the ellipse
  • a is the x-radius
  • b is the y-radius

Given: a = 7, b = 10

Assume: (h, k) = (0, 0)

\dfrac{(x-0)^2}{7^2}+\dfrac{(y-0)^2}{10^2}=1\\\\\\\dfrac{x^2}{49}+\dfrac{y^2}{100}=1\\\\\\\longrightarrow \dfrac{y^2}{100}+\dfrac{x^2}{49}=1

6 0
3 years ago
the ratio of pennies to quarters in a piggy bank is 14:3. if there are 51 quarters in the bank, how many pennies are there
malfutka [58]

The number of pennies in bank is 42

<em><u>Solution:</u></em>

Given that ratio of pennies to quarters in a piggy bank is 14 : 3

Let 14x be the number of pennies in piggy bank

Let 3x be the number of quarters in piggy bank

<em><u>To find: number of pennies</u></em>

Given that there are 51 quarters

number of pennies in piggy bank + number of quarters in piggy bank = 51

14x + 3x = 51

17x = 51

x = 3

number of pennies = 14x = 14(3) = 42

Thus the number of pennies in bank is 42

4 0
3 years ago
Marcy is concerned that her findings may be due to an extraneous uncontrolled variable and not her treatment. Marcy is most conc
Westkost [7]

Answer:

c

Step-by-step explanation:

because it's her extraneous uncontrolled variable

4 0
3 years ago
Please help will give brainliest
Olegator [25]

Answer:

I hope u understand ...

4 0
3 years ago
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