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navik [9.2K]
3 years ago
7

Write the rule for the following arithmetic sequence: 11, 15, 19, 23, …

Mathematics
1 answer:
miv72 [106K]3 years ago
5 0
11,15,19,23

an = 11 + 4(n-1)
an = 11 + 4n - 4
an = 4n + 7
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Need help with the question at the top<br><br> Thanks
Effectus [21]

First we must find area of a single square.

Meaning we divide total area of 80 centimetres squared by 5 since we have 5 squares in the shape.

A_{square}=\frac{A_{shape}}{5}=\underline{16}

Now from the picture we can see that the perimeter of shape is combined by 4 times 3 times the length of side of 1 square.

So we need to find side of 1 square.

a=\sqrt{A_{square}}=\sqrt{16}=\underline{4}

As we stated before the formula for perimeter of this shape is:

P=4(3\cdot a)=4(3\cdot4)=4\cdot12=\boxed{48}

The perimeter of shape is 48 centimetres.

Hope this helps.

r3t40

8 0
3 years ago
I need help is it A B C or D
kkurt [141]
Anwer is B...... . ........
7 0
3 years ago
Someone rides a bike at a constant speed. they go 30 miles in 2 hrs. What was their speed?
lesantik [10]

Answer:

They were going at 15 mph. Scroll down for step-by-step! :)

Step-by-step explanation:

2 hours, 30 miles. 30 divided by 2 :)

8 0
3 years ago
Read 2 more answers
I need help please can someone help
Liono4ka [1.6K]

Answer:

A 6 cm²

Step-by-step explanation:

The formula for the Surface Area of a Rectangle Prism and Square Prism [Cube] is below:

S.A = 2hw + 2bw + 2hb

Since 1 is the length of all edges, and also because all edges are congruent on a cube, you plug in 1 for the <em>height</em>, <em>width</em><em>,</em><em> </em>and<em> </em><em>base</em>:

6 = 2[1][1] + 2[1][1] + 2[1][1]

2 2 2

Or, you can just simply plug in 1 into the formula the exercise gave you and be done with it.

I am joyous to assist you anytime.

8 0
3 years ago
In △DEF, DF = 17 and m∠F=32. Find DF to the nearest tenth.
SSSSS [86.1K]
FE=14.42
ED=9.01
angle D=58
hope this helps
8 0
3 years ago
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