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chubhunter [2.5K]
3 years ago
15

Tiffany answered 90% of the questions on her test correctly. There were 50 questions on the test. How many questions did she get

right?
Mathematics
2 answers:
jarptica [38.1K]3 years ago
7 0
Tiffany got 45 questions right
saw5 [17]3 years ago
3 0
45 questions was how many she got right.
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Use technology or a z-score table to answer the question.
FinnZ [79.3K]

Answer:

C

Step-by-step explanation:

First we find the z-score.

z = (x - μ) / σ

z = (520 - 500) / 60

z = 0.33

Using a calculator or z-score table:

P(z < 0.33) = 0.6293

The probability is approximately 63%.  Answer C

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4 years ago
Tanisha gets estimates from two auto shops for
Agata [3.3K]

Answer: 1. True 2. True 3. False. Number 4 True

Step-by-step explanation: PLS GIVE ME BRAINIEST

5 0
3 years ago
Who had a head start, and how many miles was the head start? Rita had a 28-mile head start. Roger had a 26-mile head start. Roge
serg [7]

Complete question is;

Roger and Rita each drive at a constant speed between Phoenix and San Diego. Each driver’s distance for the same section of the trip is displayed below. Who had a head start, and how many miles was the head start?

A) Rita had a 28-mile head start.

B) Roger had a 26-mile head start.

C) Roger had a 25-mile head start.

D) Rita had a 22-mile head start.

Answer:

A) Rita had a 28-mile head start.

Step-by-step explanation:

Let's assume that Roger travelled a distance of 60 miles

And that;

Rita travelled a distance of 32 miles

We are told that they travelled between Phoenix and San Diego.

Thus, it means that if they have different distances but covered same section of the trip, it means the one with higher distance started before the section of the trip.

Thus, it means that Rita had a head start of Roger since she covered only 32 miles.

Thus;

Rita had a head start of; 60 - 32 = 28 miles

4 0
3 years ago
Arrange in order from least to greatest 0.38, 0.3886, 0.3722
My name is Ann [436]
Least to greatest
0.3722, 0.38, 0.3886
4 0
4 years ago
Read 2 more answers
PLEASE HELP ASAP!!!!!
Akimi4 [234]

Answer:

Part A: 140

Step-by-step explanation:

Line ACE is a straight line meaning it equals 18 degrees. To find out what Angle CEF is you have to subtract 40 from 180. That gives you 140 degrees.

Hope its helpful!

3 0
3 years ago
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