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3 years ago

NEED HELP ASAP:

Mathematics

2 answers:

OLga [1]3 years ago

8 0

Answer:

Heya, your answer would be 2034.72 mm^3.

Step-by-step explanation:

You would find the volume of a cone by using the formula <u>v = πr²h/3</u>.

Plug in your values, which gives you:

v = 3.14(18mm)² x 6mm/3

v = 3.14 *324mm² x 2mm

v = 2034.72 mm³

zepelin [54]3 years ago

6 0

Answer:

2035.8 (approximately)

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Find the interval on which the curve of y equals the integral from 0 to x of 2 divided by the quantity 1 plus 3 times t plus t s

rewona [7]

Answer:

Interval: (-3/2, ∞)

Explanation:

Let me double check.

6 0

3 years ago

a truck is going to a village and stops to see four trucks. how many trucks are going to the village?

solmaris [256]

Originally, one truck was going to a village. It later stopped to see four trucks, so currently, no trucks are going to the village.

3 0

3 years ago

Grace [21]

Answer:

a true

b false

c. false

d. true

e. false

f. true

Step-by-step explanation:

The function is y =35+8x where x is the number of items sold and y is the earnings

To determine if the point is on the graph substitute the point in and see if it is true

a (7,91)

91 = 35+ 8(7)

91 = 35+ 56

91 = 91 true

b(11, 121)

121 = 35+ 8(11)

121 = 35+ 88

121 = 123 false

c. (9, 110)

110 = 35+ 8(9)

110 = 35+ 72

110 = 107 false

d. (4,67)

67 = 35+ 8(4)

67 = 35+ 32

67 = 67 true

e. (5,72)

72 = 35+ 8(5)

72 = 35+ 40

72 = 75 false

f. (3, 59)

59 = 35+ 8(3)

59 = 35+ 24

59 = 59 true

8 0

3 years ago

Directions for questions 4 & 5: We selected a random sample of 100 StatCrunchU students, 67 females and 33 males, and analyz

GaryK [48]

Answer:

The 95% confidence interval for the difference between means is (-2164.21, -299.13).

The lower limit on the confidence interval is -$2164.21.

The upper limit on the confidence interval is -$299.13.

Step-by-step explanation:

The sample data is:

Gender Mean Std. dev. n

Female 2577.75 1916.29 67

Male 3809.42 2379.47 33

We have to calculate a 95% confidence interval for the difference between means, with a T-model.

The sample 1, of size n1=67 has a mean of 2577.75 and a standard deviation of 1916.29.

The sample 2, of size n2=33 has a mean of 3809.42 and a standard deviation of 2379.47.

The difference between sample means is Md=-1231.67.

$M_d=M_1-M_2=2577.75-3809.42=-1231.67$

The estimated standard error of the difference between means is computed using the formula:

$s_{M_d}=\sqrt{\dfrac{\sigma_1^2}{n_1}+\dfrac{\sigma_2^2}{n_2}}=\sqrt{\dfrac{1916.29^2}{67}+\dfrac{2379.47^2}{33}}\\\\\\s_{M_d}=\sqrt{54808.468+171572.045}=\sqrt{226380.513}=475.795$

The t-value for a 95% confidence interval is t=1.96.

The margin of error (MOE) can be calculated as:

$MOE=t\cdot s_M=1.96 \cdot 475.795=932.54$

Then, the lower and upper bounds of the confidence interval are:

$LL=M_d-t \cdot s_{M_d} = -1231.67-932.54=-2164.21\\\\UL=M_d+t \cdot s_{M_d} = -1231.67+932.54=-299.13$

The 95% confidence interval for the difference between means is (-2164.21, -299.13).

6 0

3 years ago

A sixth-grade science club needs $180 to pay for the tickets to a science museum. All tickets cost the same amount. What could "

ollegr [7]

Answer:

Step-by-step explanation:

180 ÷ 15 = 12

15 can go into 180 , 12 times

15 x 12 = 180

6 0

3 years ago