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artcher [175]
4 years ago
9

A+a+3=a+13 solve the equation​

Mathematics
1 answer:
mart [117]4 years ago
3 0
A+a+3=a+13
2a+3=a+13
From here you want the variables on the same side, so you would subtract the a from a+13 and move it to 2a+3
2a+3=a+13
-a -a
a+3=13
Now you want the numbers on the same side
a+3=13
-3 -3
a=10
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1 2 3 4 5 6 7 8 9 10 Susan plans to use 120 feet of fencing to enclose a rectangular area for a garden. Which equation best mode
Troyanec [42]

Answer:

Area = 60x - x^2

Step-by-step explanation:

Given

Perimeter = 120

Side\ 1 = x

Required

The area of the garden

First, we calculate the length of the other side using:

Perimeter = 2 *(Side\ 1 + Side\ 2)

This gives:

120 = 2 *(x + Side\ 2)

Divide both sides by 2

60 = x + Side\ 2

Make Side 2 the subject

Side\ 2 = 60 - x

So, the area of the garden is:

Area = Side\ 1 * Side\ 2

Area = x * (60 - x)

Expand

Area = 60x - x^2

7 0
3 years ago
A table has an area of 12 feet squared and a perimeter of 16 ft. What are the dimensions of the table?
lana [24]
The dimensions are 2 ft. by 6 ft. 2*6 is 12, the area. 2+2+6+6 is 16, the perimeter.
5 0
3 years ago
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2x + (20-y) x=6. y =17
aleksklad [387]
(2x6) + (20-17)
12 + 3
15
6 0
4 years ago
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Elizabeth brought a box of donuts to share. There are two-dozen (24) donuts in the box, all identical in size, shape, and color.
pashok25 [27]

The probability of selecting two jelly-filled donuts in a row is 1/ 22

<h3>What is probability?</h3>

Probability is simply the chance that a given event will occur.

It is also the ratio of the number of outcomes in a set of equally likely outcomes that produce a given event to the total number of possible outcomes.

From the information given, we have that the donuts are:

  • 6 are jelly-filled
  • 10 are lemon-filled
  • 8 are custard-filled

Note that two jelly - filled donuts were taken without replacement

Probability( 2 jelly -filled donuts) = 6 / 24 × 4/ 22 = 24/ 24 × 22 = 1/ 22

Thus, the probability of selecting two jelly-filled donuts in a row is 1/ 22

Learn more about probability here:

brainly.com/question/24756209

#SPJ1

8 0
2 years ago
What is the sign of x/y times 7y^3 when x&lt;0 and y&gt;0? A. Positive B. Negative C. Zero​
11111nata11111 [884]

X <0 means x would be negative.

For x/y, a negative divided by a positive would give a negative answer.

A negative multiplied by a positive would result in a negative.

The answer would be B. Negative

4 0
3 years ago
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