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Sergeu [11.5K]
2 years ago
8

Explain why my calculator gives an error when you enter cos^-1 (5/4)

Mathematics
2 answers:
Gemiola [76]2 years ago
5 0

Answer:

see explanation

Step-by-step explanation:

To obtain a solution for cos^{-1} (x) , then

- 1 ≤ x ≤ 1

That is the value of x cannot be greater than 1 or less than - 1

here x = \frac{5}{4} = 1.25 which is greater than 1 , thus calculator will return ' error'

Gnoma [55]2 years ago
4 0

Step-by-step explanation:

because the is no answer for that in the calculator

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Circle each number that is a solution of the given inequality.
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C i think I’m not 100% sure
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3 years ago
In the data set shown below, what is the value of the quartiles? {56, 58, 64, 68, 72, 75, 78} A. Q1 = 58; Q2 = 68; Q3 = 73.5 B.
Marysya12 [62]

Answer:

(C) Q1: 55.5 Q2: 110 Q3: 295

Step-by-step explanation:

Given the dataset:

There are 25 items in the dataset.

To find Q2, We divide it into two equal parts and consider the middle term

Therefore: Q2 =110

Q1 = the median of the lower half of the data set.

Q3 = is the median of the upper half of the data set.

In the lower half of the data

Since there are even number of terms,

Median = (55+56)/2=55.5

Therefore: Q1=55.5

In the upper half of the data

Since there are even number of terms,

Median = (239+351)/2=295

Therefore: Q3=295

Q1: 55.5,  Q2: 110,  Q3: 295

The correct option is C.

8 0
2 years ago
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2. Tania went to Italy. She changed £325 into euros (€). The exchange rate was £1 = €1.68 (a) Change £325 into euros (E). ​
aalyn [17]

Answer:

£325 is €546

Step-by-step explanation:

325 times 1.68 is 546

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3 years ago
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devon writes a number pattern. he starts wit 3 and follows the rules. multiply by 2. which numbers could be in devons pattern? A
Pie

Answer:

C. 24 and 96

Step-by-step explanation:

He starts with 3 and follows the rules. multiply by 2

which numbers could be in devons pattern?

3 × 2 = 6

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12 × 2 = 24

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96 × 2 = 192

The numbers that could be in Devon's pattern includes: 6, 12, 24, 48, 96, 192 etc

Therefore, the answer is C. 24 and 96

3 0
3 years ago
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