I found the image that should have accompanied this problem.

Given:
equilateral triangle with sides that measures 7cm.
hexagonal shape meaning 6 sides or 6 equilateral triangles used.

Area of an equilateral triangle = √3/4 * a²
A = √3 /4 * (7cm)²
A = 1.73/4 * 49cm²
A = 21.20 cm²

21.20 cm² * 6 tiles = 127.20 cm² ARea of the hexagon.

7 0

4 years ago

Louisa has $145 saved in her account. She makes $8 an hour at work. How many hours must she work to have at least $320?

musickatia [10]

$145 saved in her account.
$8 an hour at work.
at least $320

320 - 145 = 175

175 ÷ 8 = 21.875

Louisa needs to work about 22 more hrs to have at least $320!

6 0

3 years ago

A motorcycle travels 1076 meters in 12 minutes. What was the average speed of the motorcycle?

Inga [223]

Answer:

89.6 meters per minute

Step-by-step explanation:

6 0

3 years ago

Two random samples of 40 students were drawn independently from two populations of students. Assume their aptitude tests are nor

dybincka [34]

Answer:

b. Do not reject the null hypothesis

Step-by-step explanation:

Given that two random samples of 40 students were drawn independently from two populations of students. Assuming equal variances

we have the following data.

Sample 1

Mean:

Standard deviation:

Sample size:

Sample 2

Mean:

Standard deviation:

Sample size:

$H_0: \bar x_1=\bar x_2\\H_a: \bar x_1\neq \bar x_2$

Difference -3.000

Standard error 1.681

95% CI -6.3462 to 0.3462

t-statistic -1.785

DF 78

Significance level P = 0.0782

Since p value >0.05,

b. Do not reject the null hypothesis

7 0

4 years ago