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Illusion [34]
2 years ago
10

Ent

Mathematics
1 answer:
CaHeK987 [17]2 years ago
7 0
B that is the equivalent answer
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Pls help I don’t get any of them
JulijaS [17]

Answer:

Step-by-step explanation:

28.   Area of the circle = πr^{2} where r is the radius of the circle.

       Given diameter = 14m, therefore radius = \frac{14}{2} = 7m

       Now area of the circle = 49\pi ^{2} or = 49 * 3.14 * 3.14 = 483.12m^{2}

29. Volume of cylinder = πr^{2}h = π*1.5^{2} * 3 = 6.75π cu. feet or 21.195 cu. feet

30. A ball resembles a sphere. Volume of the sphere = \frac{4}{3} \pi r^{3}

      Given diameter = 30inches; Therefore, radius = 15 inches

 Now, Volume of the ball = \frac{4}{3} \pi 15^{3} = 4500π cu. inches or 14310 cu.inches

7 0
3 years ago
Solve the following inequality: 3-5x-x^2>=0
Dennis_Churaev [7]

Answer:

-5/2+-1/2√37≤x≤-5/2+1/2√37

Step-by-step explanation:

Step 1: Find the critical points

-x^2-5x+3=0

For this equation: a=-1, b=-5, c=3

−1x^2+−5x+3=0

x=−b±√b2−4ac/2a

x=−(−5)±√(−5)2−4(−1)(3)/2(-1)

x=5±√37 /−2

x=-5/2+1/2√37

Step 2: Check intervals in between critical points

x≤-5/2+1/2 √37 (Doesn't work in original inequality)

-5/2+-1/2√37≤x≤-5/2+1/2√37 (Works in original inequality)

x≥-5/2+1/2 √37 (Doesn't work in original inequality)

5 0
3 years ago
Name 2 semi circles<br><br><br>​
mart [117]

Answer:

Arc CDE and arc EAC.

Step-by-step explanation:

Semicircles are exactly one-half of a circle and are always equal to 180 degrees. Since line CE is a horizontal line, measuring 180 degrees, 2 semicircles can be arcs CDE and EAC because they equal half of the circle.

I hope this helps!

8 0
1 year ago
Give me example of a unit rate used in real life
lana66690 [7]

Before you begin this lesson, please print the accompanying document, Unit Rates in Everyday Life].

Have you ever been at the grocery store and stood, staring, at two different sizes of the same item wondering which one is the better deal? If so, you are not alone. A UNIT RATE could help you out when this happens and make your purchasing decision an easy one.

In this lesson, you will learn what UNIT RATES are and how to apply them in everyday comparison situations. Click the links below and complete the appropriate sections of the Unit Rates handout.

[Note: The links below were created using the Livescribe Pulse Smartpen. If you have never watched Livescribe media before, take a few minutes to watch this very brief Livescribe orientation]

<span>What is a UNIT RATE – definitionView some examples of Unit RatesSee a process to compute Unit Rates</span>
3 0
3 years ago
The solution of 2x2 + x = 3 is shown below.
Yanka [14]

Answer:

b. {(-1.5, 9.5), (1,7)}

Step-by-step explanation:

brainliest please? :)

9 0
2 years ago
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