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Thepotemich [5.8K]
3 years ago
9

9.80x10^-3 + 1.60x10^-4 scientific notation

Mathematics
2 answers:
e-lub [12.9K]3 years ago
6 0
<span>0.00996 would be it I just took a quiz like that but good luck</span>
Llana [10]3 years ago
3 0
<span>0.00996 would be your answer</span>
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Draw a rectangle that has a perimeter of 20 units and an area of 25 square units
marissa [1.9K]
<h2>Explanation:</h2><h2></h2>

For any rectangle the dimensions are given by:

w:width \\ \\ l:Length

So the perimeter (P) is given by the following equation:

P=2(w+l)

And the area is:

A=w\times l

We know that:

P=20units \\ \\ A=25units^2

By substituting:

20=2(w+l) \\ \\ \therefore w+l=10 \ \ldots eq1 \\ \\ \\ 25=w\times l \ldots eq2

Solving for w from eq1:

w=10-l

Substituting into eq2:

25=(10-l)\times l

Then:

\text{Solving for l:} \\ \\ \\ 10l-l^2=25 \\ \\ 10l-l^2-25=25-25 \\ \\ -l^2+10l-25=0 \\ \\ x_{1,\:2}=\frac{-b\pm \sqrt{b^2-4ac}}{2a} \\ \\ \\ a=-1,\:b=10,\:c=-25 \\ \\ \\ l_{1,\:2}=\frac{-10\pm \sqrt{10^2-4\left(-1\right)\left(-25\right)}}{2\left(-1\right)} \\ \\ l_{1,\:2}=\frac{-10\pm \sqrt{0}}{2\left(-1\right)} \\ \\ l=5

Solving for w:

w=10-5=5

So this rectangle is a square and is shown below.

8 0
2 years ago
What is the volume of the cube? 2 1/2<br>​
alekssr [168]

Answer:

a^3

Hope this helps

3 0
3 years ago
During a sale, an appliance that costs $275 is being sold at a discount for $220. Which equation can be used to find the rate of
Olin [163]

your mom lol iwjdvdhaikabdbkos

6 0
2 years ago
What is the sum of the exterior angles of polygon QRST?
Whitepunk [10]

Answer:

360°

Step-by-step explanation:

The sum of the exterior angles of any polygon is 360°

3 0
3 years ago
Please hurry! How is the area of a rectangle related to the area of a triangle?
cricket20 [7]
The area of a rectangle is Base x height whereas the area of a triangle is Base x height divided by 2
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3 years ago
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