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Len [333]
3 years ago
11

What is (7s^2+3s)-(4s^2-3s+1) in simplest form?

Mathematics
1 answer:
DENIUS [597]3 years ago
5 0
First distribute the negative over the parentheses:-
= 7s^2 + 3s - 4s^2 + 3s - 1
= 3s^2 +6s - 1
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WILL MARK BRAINLIEST AND THANK YOU!!! PLEASE HELP!!
Nadya [2.5K]

Answer:

426.9 Km²

Step-by-step explanation:

The shaded area is the area of the triangle subtract the area of the circle.

Area of triangle = 0.5 bh ( b is the base and h the perpendicular height )

Here b = 40 and h = 27, thus

Area = 0.5 × 40 × 27 = 20 × 27 = 540 Km²

Area of circle = πr² ← r is the radius

Here the diameter is 12, thus radius = 12 ÷ 2 = 6

Area = π × 6² = 36π ≈ 113.1 Km²

Shaded area = 540 - 113.1 = 426.9 Km²

6 0
3 years ago
Joan is planting a rectangular garden that is 20ft long and 25ft wide. What is the total area of the garden?
laila [671]

Answer:

Length • Width

20 • 25 = 500

So the area is 500ft! :)

Step-by-step explanation:

3 0
3 years ago
Anyone know how to do this???
frosja888 [35]
Assuming the board games are rectangular boards (which most are) you simply multiply the length with the width to get the area.
6 0
4 years ago
QUESTION 10
Bezzdna [24]

The correct answer is A. The 200 randomly selected students

Explanation:

In most studies, the complete population is not surveyed or studied instead, a specific number of individuals are selected, this group is known as the sample. Additionally, the sample represents the population, and due to this, their answers are used to make inferences about all the population.

According to this, the population is all the students in the school, while the sample is the 200 randomly selected students because this is the group that is going to be studied to make conclusions and inferences about all the population.

7 0
3 years ago
Find the area of the kite. ) 210m ^ 2 ) 140m ^ 2; 420m ^ 2; 224m ^ 2
Nikolay [14]

Answer:

from the image above

Triangle ABE = Triangle ADE

AE = AE ( common).

angle AEB = angle AEO ( each 90°)

AB = AD ( given).

by side angle side criteria

so area of ABE = area of ADE

similarly,

BC = DC ( given)

BEC = DEC ( 90°)

EC = EC ( 9m each)

so area of BEC = Area of DEC

<h3><u>Area </u><u>of </u><u>Kite </u><u>=</u><u> </u><u>2</u><u>1</u><u>0</u><u> </u><u>m²</u></h3>

6 0
2 years ago
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