Ask question

Ask question

All categories

2 years ago

14

A school wants to buy a chalkboard that measures 4 feet by 6 feet. The chalkboard costs $7.21 per square foot. How much will the

chalkboard cost?

1 answer:

kkurt [141]2 years ago

5 0

Area of chalkboard = 4 feet x 6 feet = 24 square feet.

Total cost = 24 square feet x $7.21 per square foot = $173.04

Answer: $173.04

You might be interested in

Write as a decimal number.<br> 9-10

Ad libitum [116K]

Answer:

.9

Step-by-step explanation:

9 divided by 10

8 0

2 years ago

An Italian restaurant made 6 breadsticks for a table of four people. How many breadsticks will they need to make if they are exp

inessss [21]

Answer:

i think that is 147

Step-by-step explanation:

6 0

2 years ago

Which fraction has a repeating decimal as its decimal expansion?<br> w<br> w<br> w<br> cow

ArbitrLikvidat [17]

Answer:

w

Step-by-step explanation:

idk whats cow but w over co

8 0

2 years ago

Complete parts (a) through (c) below.

Yuki888 [10]

Answer:

a) $t_{crit}= 1.34$

b) $t_{crit}=-2.539$

c) $t_{crit}=\pm 2.228$

Step-by-step explanation:

Part a

The significance level given is $\alpha=0.1$ and the degrees of freedom are given by:

$df = n-1= 15$

Since we are conducting a right tailed test we need to find a critical value on the t distirbution who accumulates 0.1 of the area in the right and we got:

$t_{crit}= 1.34$

Part b

The significance level given is $\alpha=0.01$ and the degrees of freedom are given by:

$df = n-1= 20-1=19$

Since we are conducting a left tailed test we need to find a critical value on the t distirbution who accumulates 0.01 of the area in the left and we got:

$t_{crit}=-2.539$

Part c

The significance level given is $\alpha=0.05$ and $\alpha/2 =0.025$ and the degrees of freedom are given by:

$df = n-1= 11-1=10$

Since we are conducting a two tailed test we need to find a critical value on the t distirbution who accumulates 0.025 of the area on each tail and we got:

$t_{crit}=\pm 2.228$

4 0

3 years ago

I totally forgot how to do #4. Can you plz explain?

Dahasolnce [82]

The answer is F because you would have to multiply both 4 and 3 to get 12. Then you add both of the exponents for X to get 5. You wouldn't have to do anything for Y because you can't add it to anything.

4 0

3 years ago