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3 years ago

Do u add or multiply to find area

Mathematics

2 answers:

evablogger [386]3 years ago

8 0

Answer:

To find the area of a rectangle multiply its height by its width, meaning, you have to multiply to find the area.

Step-by-step explanation:

For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area. ... Solution 1 and 2 require that you make two shapes and add their areas together to find the total area.

Sincerely, Lily

nata0808 [166]3 years ago

4 0

Answer:

Multiply. To find the area of a shape, you multiply. Conversely, you add to find the perimeter of a shape.

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A compound contains 40% calcium, 12% carbon, and 48% oxygen by mass. What is the empirical formula of this compound?

astraxan [27]

Answer:

Step-by-step explanation:

Explanation:

Although you have not been provided with direct masses, you can use the percentage composition values in place of masses.

First, calculate the number of moles of each element:

This is the formula for the ionic compound calcium carbonate, confirming that our result is indeed in the magnitude of a plausible answer. In fact, given the fact that calcium carbonate is ionic, it is also true that this empirical formula equates to the unit formula of the compound.

8 0

3 years ago

I need help with this any one please help me

alexandr1967 [171]

Answer:

b. y = 1000x

Constant of proportionality = 1,000

Step-by-step explanation:

The equation that represents a proportional relationship between variable x and y usually takes the following form, y = kx.

Where,

k = constant of proportionality.

From the three given equations, the only equation that takes the form is b. y = 1000x.

The constant of proportionality (k) of the equation = 1,000.

5 0

3 years ago

In a game called taxation and evasion, a player rolls a pair of dice. if on any turn the sum is 7, 11, or 12, the player gets au

bezimeni [28]

The probability that she gets audited no more than 2 times is 0.896482...

As, a pair of dice are rolling here, so the number of total possible outcome = (6×6) = 36

For Sum = 7 , the favorable outcomes are: (1,6) (2,5) (3,4) (4,3) (5,2) and (6,1)

For Sum = 11 , the favorable outcomes are: (5,6) and (6,5)

For Sum = 12 , the favorable outcome is: (6,6)

Probability = (Number of favorable outcomes)÷(Number of total outcomes)

So, $P(7)= \frac{6}{36} =\frac{1}{6}$

$P(11) = \frac{2}{36} = \frac{1}{18}$

$P(12) = \frac{1}{36}$

P( 7 or 11 or 12) = $\frac{1}{6}+\frac{1}{18}+\frac{1}{36} = \frac{6+2+1}{36}=\frac{9}{36} = \frac{1}{4}$

Here the total number of trials = 5 and the probability of getting audited = $\frac{1}{4}$

According the binomial distribution formula:

P(X) = (ⁿCₓ )(P)ˣ (1-P)ⁿ⁻ˣ

where P(X) is the probability of x successes out of n trials

Here, n= 5 and P = 1/4 and we need to find the probability of getting audited no more than 2 times. This means she can gets audited 0, 1 or 2 times.

So,

$P(X=0)+P(X=1) +P(X=2)\\\\= [^5C^0 (\frac{1}{4})^0 (1-\frac{1}{4})^5^-^0 ]+[^5C^1 (\frac{1}{4})^1 (\frac{3}{4})^5^-^1]+[^5C^2 (\frac{1}{4})^2 (\frac{3}{4})^5^-^2]\\\\= (\frac{3}{4})^5+ (5) (\frac{1}{4}) (\frac{3}{4})^4 +(10)(\frac{1}{4})^2 (\frac{3}{4})^3\\\\=0.237304... +0.395507...+0.263671...\\\\ = 0.896482...$

So, the probability that she gets audited no more than 2 times is 0.896482...

5 0

3 years ago

Plz show work 3x-5=1/2x+2x

Troyanec [42]

3x - 5 = 1/2x + 2x 3x - 5 = .5x + 2x3x - 5 = 2.5x-3x = -3x -5= -.5x divide by -.5 on both sidesx = 10

8 0

3 years ago

WILL GIVE BRAINILIST HELPPPPPPPPPPPPPPPPPPPPPPPPPPPP Point P is plotted on the coordinate grid. If point S is 6 units above poin

BaLLatris [955]

Answer:

The coordinates of point S are (6, 2).

Step-by-step explanation:

(x, y) where x is horizontal and y is vertical.

Point P's coordinates are (6, -4). Point S is 6 units above point P. This means we need to add 6 to point P's y value; -4.

-4 + 6 = 2

The y value is 2 for point S. The x value stays the same because we are not moving point S to the left or right of point P. The coordinates of point S are (6, 2).

Hope this helps,

♥A.W.E.S.W.A.N.♥

8 0

4 years ago