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Tatiana [17]
4 years ago
12

Solve for a.

Mathematics
1 answer:
egoroff_w [7]4 years ago
3 0

Answer: a=\sqrt{\frac{30}{23} }

Step-by-step explanation:

23a^2=30

Divide by 23

a^2=\frac{30}{23}

Extract the square root.

a=\sqrt{\frac{30}{23} }

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Event A: Flipping heads on a coin #1. Event B: Flipping heads on a coin #2. What is P(A and B)?
8_murik_8 [283]

Answer:

coin 1

Step-by-step explanation: i think this is it

4 0
3 years ago
The radius of a circular baking tray is 6 cm. Find its area correct to 2 decimal places. Use the π button on your calculator for
ELEN [110]

Answer:

A \approx 113.10cm^2

Step-by-step explanation:

The circle is a flat surface or area limited or closed by a circumference. It is a two-dimensional figure and is formed by making a curve where it will always have the same distance to the center. Its area can be calculated using the following formula:

A=\pi r^2\\\\Where:\\\\r=radius

Therefore the area of the circular baking tray is:

A=\pi (6)^2=\pi*36=36 \pi=113.0973355\approx 113.10 cm^2

5 0
4 years ago
Find slope of line through each pair of points (3,9), (-19, -12)
koban [17]
21/22

use y2-y1 / x2-x1
(9-(-12)) / (3-(-19))
21/22
5 0
3 years ago
Lisa sold 11 shirts for every 7 shirts Becky sold. If the girls sold 72 shirts in all, how many shirts did Becky sell?
Eva8 [605]

Answer: 28 shirts

Step-by-step explanation:

From the question, we are informed that Lisa sold 11 shirts for every 7 shirts Becky sold. This can be expressed in a fraction as:

Lisa = 11/(11 + 7) = 11/18

Becky = 7/(11 + 7) = 7/18

If the girls sold 72 shirts in all, the number of shirts sold by Becky will be:

= 7/18 × 72

= 7 × 4

= 28

8 0
3 years ago
The length of a rectangle is twice its width. The perimeter is 60 ft. Find its area.In the form of a paragraph, explain in compl
Vika [28.1K]

Set the following: Length = L    Width = W

The length is twice the width:    L = 2*W     or:  W = L/2

Perimeter: P = 60ft = 2*L + 2*W

Substituting L for W in the perimeter equation gives:

P = 60ft = 2*L + 2*(L/2) = 2*L + L = 3L

L = 60ft/3 = 20ft    W=L/2=20ft/2=10ft

Verify result:  Perimeter= P = 60ft = 2L + 2W = 2*20ft +2*10ft = 40ft+20ft = 60ft

The area of the rectangular is: Area = A = Length*Width = L*W = 20ft*10ft = 200 (ft)^2

-Mabel <3

7 0
3 years ago
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