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sashaice [31]
2 years ago
14

Can someone please help me with this question

Mathematics
1 answer:
navik [9.2K]2 years ago
5 0
It is C: 80° A circle's interior angle is 360°, and 360-280° is 80°!
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A pyramid with a square base has how many faces?
mylen [45]

Answer:

It has 5 Faces. The 4 Side Faces are Triangles. The Base is a Square. It has 5 Vertices (corner points)


Step-by-step explanation:


3 0
3 years ago
Ricky is playing a racing game on PS5.
stepan [7]

Answer:

192 points

Step-by-step explanation:

he earned 120 points for passing 6 levels and getting 20 points per level

he earned 72 points for racing 45 laps and getting 24 points per every 15 laps

8 0
3 years ago
In a random sample of 500 handwritten zip code digits, 464 were read correctly by an optical character recognition (OCR) system
In-s [12.5K]

Answer:

z= 2.38

P = 0.008656

Step-by-step explanation:

Here n= 500 and p~= 464/500= 0.928 and q`= 1- 0.928 = 0.072

We formulate our null and alternate hypothesis as

H0 =  0.9 ;       H0 > 0.9

The degree of confidence = 90%

z₀.₀₅ = 1.645 for  α= 0.05

We use the test statistic

z=  x- np/√npq

z= 466-500 *0.9/ √500 * 0.9(1-0.9)

z= 466- 450/ √45

z= 16/6.7082

z= 2.38

As the calculated value of z= 2.38  is greater than α =1.645 so we reject H0.

If H0 is true the P value is calculated as

P = 1- Ф( 2.38)

P = 1-0.991344=0.008656

7 0
3 years ago
Rose writes down all of her math quiz scores. Her math scores are 98,78,84, and 96. What is the mean of her math quiz scores?
KATRIN_1 [288]

Answer:

89

Step-by-step explanation:

Hi, there to find the mean

you need add the numbers and count how many numbers are there and divide

In this case 98+78+84+96= 356

Now we will count

there are 4 numbers

\frac{356}{4}= 89

Your mean will be 89

If you ever have trouble with mean remember this

Mean\frac{SumofDataPoints}{NumberofDataPoints }

well it is supposed to be:

Sum of Data Points/Number of Data Points

4 0
3 years ago
Which expression represents five more than one-third y?
MaRussiya [10]

Answer:

1/3 y  +5

Step-by-step explanation:

five more than one-third y

1/3 y  +5

5 0
3 years ago
Read 2 more answers
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