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tatuchka [14]
3 years ago
12

Help meeeeeeeeeeee with all of these questions

Mathematics
1 answer:
kaheart [24]3 years ago
6 0
Answer:
1. Step 2: 2a-6+6 Step 3: 2a
2. Step 2: 8(2d+3)

Step by step explanation:
Here’s my work form what I seen:

You might be interested in
The measures of 13 of the 14 angles of a 14−gon add up to 2,016°. What must the fourteenth angle measure be?
Ainat [17]

Answer:

x = 155 \frac{1}{13} or 155 1/3 degrees. If you want a decimal, 155.076923 degrees.

Step-by-step explanation:

2,016 is the sum of 13 identical numbers. Let's say the unknown number is x. We'll now write an equation to solve it.

13x = 2016

Divide both sides by 13.

x = \frac{2016}{13}

Now, I went ahead and solved this and ended up with a repeating decimal. But for your sake we'll just make it a nice mixed number.

13 goes into 2016 155 times.

Here, I'll check for you.

13 * 155 = 2015

So, if we were to turn this into a mixed number, we'd get something like this.

x = 155 \frac{1}{13}

That should be your fourteenth angle measure.

7 0
3 years ago
a rectangle has an area of 651m². One of the sides is 7m in length. Work out the perimeter of the rectangle​
Grace [21]

Answer:

200

Step-by-step explanation:

So first off, let's find the other side.

651 divided by 7 = 93

93 would be the other side measurement. There are two sides that measure 93 degrees, two sides that measure 7 degrees.

93 + 93 + 7 +7 = perimeter

Once we add up like terms, 200

5 0
3 years ago
Is -12.452 a rational or irrational number??
Over [174]

Answer:

Rational

Step-by-step explanation:

Rational number is kind of like a number that you can understand, i.e 4.567,

7.67.

Irrational number is kind of like a number that you can't really understand, like π, pi. 3.1415926535897...

3 0
3 years ago
Read 2 more answers
What is the expressions of 2/5and5/2?
ladessa [460]
Inversely proportional representation
4 0
3 years ago
Which graph shows y = 2x - 1/2?
Arisa [49]
Answer :
the third graph
explanation :
typed in the equation on desmos and compared
4 0
3 years ago
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