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Tcecarenko [31]
3 years ago
6

What do I do I can't understand it my teacher stupid

Mathematics
1 answer:
denpristay [2]3 years ago
5 0
Make them all fractions over 4, so 3 would be 12/4, and 1 1/4 would be 5/4 so add them together 
12/4+5/4= 17/4 then divide by 4 to reduce it, to get 4 1/4
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Please help. I’ll mark you as brainliest if correct
saul85 [17]

Answer:

25.12

Step-by-step explanation:

C = 2pir

2 * pi = 6.28, 6.28 * 4 = 25.12

5 0
3 years ago
How to find the area of three fourths of a circle
professor190 [17]
To find<span> the perimeter of the </span>quarter circle<span>, </span>find<span> the circumference of the whole </span>circle<span>, divide by 4, and then add the radius twice. To </span>find<span> the radius when you are given the </span>area<span> of the </span>quarter circle<span>, multiply the given </span>area<span> by 4, then plug this number in for A into the formula A = pi * r^2 and then solve for r.</span>
7 0
3 years ago
What is the value of q?<br> A.122<br> B.116<br> C.180<br> D.58
Studentka2010 [4]

Step-by-step explanation:

A cyclic quadrilateral is a quadrilateral whose vertices all lie on a single circle. A convex quadrilateral ABCD is cyclic if and only if its opposite angles are supplementary, means

∠q + 58 =180

∠q = 180 -58

∠q = 122 degree

∠p + 90 = 180

∠p = 180 -90

∠p = 90 degree

4 0
3 years ago
If the test scores in Personal Finance Unit 9 are normally distributed with a
nasty-shy [4]

Answer:

68.269%

Step-by-step explanation:

We start by calculating the z-scores of both numbers

Mathematically;

z-score = (x-mean)/SD

where x represents the raw score

For 82;

z-score = (82-87)/5 = -5/5 = -1

For 92;

z-score = (92-87)/5 = 5/5 = 1

So the probability we want to calculate would be;

P(-1 < x< 1)

We can use the standard normal distribution table to get this.

By using the distribution, P(-1<x<1) = 0.68269

By converting this to percentage, we have 68.269%

3 0
3 years ago
If the exchange rate when converting US Dollars to ZA rands is $1=R17
NikAS [45]

Answer:

200 US DOLLARS

Step-by-step explanation:

Given; $1=R17

To find: How much is Zar3400 in US DOLLARS

$1=R17

R3400=3400/17 US DOLLARS

=200 US DOLLARS

Hope my answer is right thank you.

5 0
2 years ago
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