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3 years ago

Calculate your age in hours to the nearest hour.

Mathematics

2 answers:

ale4655 [162]3 years ago

8 0

Answer:

50000000000000000000

Step-by-step explanation:

Reika [66]3 years ago

6 0

Answer:

122640

Step-by-step explanation:

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The proportion of students at a college who have GPA higher than 3.5 is 19%. a. You take repeated random samples of size 25 from

melomori [17]

Answer:

$\mu_{\hat{p}}=0.19$

$\sigma_{\hat{p}}=0.0785$

Step-by-step explanation:

We know that the mean and the standard error of the sampling distribution of the sample proportions will be :-

$\mu_{\hat{p}}=p$

$\sigma_{\hat{p}}=\sqrt{\dfrac{p(1-p)}{n}}$

, where p=population proportion and n= sample size.

Given : The proportion of students at a college who have GPA higher than 3.5 is 19%.

i.e. p= 19%=0.19

The for sample size n= 25

The mean and the standard error of the sampling distribution of the sample proportions will be :-

$\mu_{\hat{p}}=0.19$

$\sigma_{\hat{p}}=\sqrt{\dfrac{0.19(1-0.19)}{25}}\\\\=\sqrt{0.006156}=0.0784601809837\approx0.0785$

Hence , the mean and the standard error of the sampling distribution of the sample proportions :

$\mu_{\hat{p}}=0.19$

$\sigma_{\hat{p}}=0.0785$

8 0

3 years ago

If f(x)=x^2 what is g(x) A. g(x)=1/9x^2 B. g(x)=(1/3x)^2 C. g(x)=3x^2 D. g(x)=1/3x^2

Pavlova-9 [17]

Answer:

the answer is B

Step-by-step explanation:

3 0

3 years ago

Triangle DEF (not shown) is similar to ABC shown, with angle B congruent to angle E and angle C congruent to angle F. The length

Bezzdna [24]

Answer:

Area of ΔDEF is $45\ cm^2$ .

Step-by-step explanation:

Given;

ΔABC and ΔDEF is similar and ∠B ≅ ∠E.

Length of AB = $2\ cm$ and

Length of DE = $6\ cm$

Area of ΔABC = $5\ cm^2$

Solution,

Since, ΔABC and ΔDEF is similar and ∠B ≅ ∠E.

Therefore,

$\frac{Area\ of\ triangle\ 1}{Area\ of\ triangle\ 2} =\frac{AB^2}{DE^2}$

Where triangle 1 and triangle 2 is ΔABC and ΔDEF respectively.

If two triangles are similar, then the ratio of the area of both triangles is proportional to the square of the ratio of their corresponding sides.

$\frac{5}{Area\ of\ triangle\ 2} =\frac{2^2}{6^2}\\ \frac{5}{Area\ of\ triangle\ 2}=\frac{4}{36}\\ Area\ of\ triangle\ 2=\frac{5\times36}{4} =5\times9=45\ cm^2$

Thus the area of ΔDEF is $45\ cm^2$ .

4 0

3 years ago

Read 2 more answers

I really need help plzzzzz

Marianna [84]

Answer:

All similar, see below

Step-by-step explanation:

Angles

26° & 64° & 90°
AA similarity

Ratios of corresponding sides:

6/8 = 9/12 = 12/16 ⇒ 3/4
SSS similarity

Angle C is vertical

∠ACB ≅ ∠DCE

Ratios of corresponding sides:

9/15 = 18/30 ⇒ 3/5
SAS similarity

6 0

2 years ago

7. Sarah bought a lawnmower for $320. She signed up for the buy now pay later plan at the store with the following conditions: $

erastova [34]

Amount financed
320−100=220

Total paid
100+25×12=400

Interest paid
400−320=80

Interest rate=(2yc)÷(m (n+1))
I=(2×12×80)÷(220 (12+1))
I=(2×12×80)÷(220×13)
I=0.67×100
I=67%

4 0

3 years ago

Read 2 more answers