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4 years ago

Hi i need help with these questions

Mathematics

1 answer:

gregori [183]4 years ago

4 0

Answer:

for 18 i got $28 100×.04×7

and for 19 i got $348.92

300(1+.051 or [5.1/100] /2)to the power of 6 or [3×2]

Step-by-step explanation:

Simple interest is Principal × Rate ×Time but you turn the rate into a decimal

Compounded interest is (F)inal (V)alue(1+(r)ate/(n)umber of times interest is compounded) to the power of (N×T)ime

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The time it takes for a statistics professor to mark a single midterm test is normally distributed with a mean of 4.8 minutes an

Bess [88]

Answer:

Step-by-step explanation:

SD of mean = 2.3/ $\sqrt{55}$ = 0.418

5 hours = 300 minutes

300 minutes/55 students = 5.45 min/student

The problem asks what is the probability he needs more than an average of 5 min/student

P(XBAR < 5.0) = P((XBAR - 4.8) / 0.418) < (5.0 - 4.8) /0.418) = P(Z < 0.478) = 0.8893

P(XBAR > 5.0) = 1 - 0.8893 = 0.1107

7 0

3 years ago

Use synthetic division to find (x^4-2x^3+x-9) / (x-2)

Mademuasel [1]

Set up the synthetic division using the coefficients of the numerator and the root in the denominator. Divide using the rules for synthetic division.
x^3 + 1 - 7 / x -2
Hope this helps! :)

5 0

3 years ago

Express the sum of each pair of numbers as a product of the greatest common factor of the numbers and another sum.

Sonbull [250]

9) 147
10) 145
greatest common factor is 14 I think

8 0

3 years ago

A right triangle includes one angle that mesures 30 degrees. What is the measure of the third angle?

Airida [17]

The third angle is 60 degrees. A triangle has 180 degrees so 180-30-90=60

5 0

4 years ago

Read 2 more answers

There are 10 friends who are trying to play and beat the video game, Breath of the Wild. There are 76 side quests in this game.

victus00 [196]

Answer:

2; 28.5 ; 34 ; 36 ; 38

Step-by-step explanation:

Given the data:

X = 25, 28, 29, 30, 34, 35, 35, 37, 38

n = 9

Values have been arranged in ascending order ;

The 5 number summary :

Maximum value : highest data value in the list = 38

Minimum value : Lowest data value in the list = 25

The lower quartile ; Q1 = 1/4(n+1)th term

Q1 = 1/4(10) th term = 2.5th term

Q1 = (2nd + 3rd) / 2 = (28+29)/2 = 28.5

Q2 = 1/2(n+1)th term

Q2 = 1/2(10) th term = 5th term

Q2 = 34

Q3 = 3/4(n+1)th term

Q3 = 3/4(10) th term = 7.5th term

Q3 = (7th + 8th) / 2 = (35+37)/2 = 36

Maximum value = 38 (highest data value in the list)

5 0

3 years ago