All categories

3 years ago

Need help before 6:30 please help me before then and have more to do

Mathematics

2 answers:

fiasKO [112]3 years ago

3 0

Question 5 is: B.27in^2

Dennis_Churaev [7]3 years ago

3 0

5. B
divide the shape into two pieces: One 2 inches wide and 9 inches long, and the other with 3 inches wide and 3 inches long. Find the area, and the result should be 18 inches and 9 inches; 18 + 9 = 27 squared inches.
6. D
The same rule applies: Divide the shape into a rectangle 4cm wide and 12cm long, and a triangle with 3cm long and 4cm wide. This might be a bit confusing, but since there are two triangles, the division of two is not required. Anyways, the area of the rectangle is 48cm and the area of the triangle is 12 cm; 48 + 12 = 60 squared centimeters.
7. 80 squared centimeters.
Using the same rule, you divide the shape into two trapezoids, and end up with the are of each being 46cm ((13 + 10) • 4/2) and 34cm ((10 + 7) • 4/2); 46 + 34 = 80 squared centimeters.

You might be interested in

it cost $102.50 to repair a plasma tv. if you pay $15 for new parts and $25 per hour for labour, how much time did it take to re

Nana76 [90]

Subtract the part from the total:

102.50 - 15 = 87.50

Now divide the remainder by rate:

87.50 / 25 = 3.5 hours

7 0

3 years ago

You hammer a nail into a tree trunk 10 ft above the ground (and the tree is currently 20 ft tall). The tree grows taller at a ra

AnnZ [28]

Answer:

The nail would be 30 feet above the ground in 10 years.

Step-by-step explanation:

We are given the following in the question:

Height of nail = 10 feet.

The tree grows taller at a rate of 2 feet per year.

Thus, the height of nail can be represented by a linear function:

$h(t) = 10 + 2t$

where t is the number of years.

We have to find the height of nail in 10 years.

Putting t = 10, we get,

$h(10) = 10 + 2(10)\\h(10) = 30$

Thus, the nail would be 30 feet above the ground in 10 years.

3 0

4 years ago

If f(x) = 3^x and g(x) = 3^(x+1)+6. Describe the transformations from f(x) to g(x).

OlgaM077 [116]

To move tot he right h units, subtract h from every x to move up k units, add k to the whole equaiton added 1 to every x (subtract -1) added6 to whole thing moved -1 to right (moved 1 to left) moved up 6 units answer is A

5 0

3 years ago

A line contains the points

Margarita [4]

What is the question?

6 0

4 years ago

Karen wants to advertise how many chocolate chips are in each big chip cookie at her bakery. she randomly selects a sample of 69

Tomtit [17]

Answer: $(10.1989,\ 11.0011)$

Step-by-step explanation:

Given : Sample size : n=69

Sample mean : $\overline{x}=10.6$

Standard deviation : $s=1.7$

Significance level : $\alpha:1-0.95=0.05$

Then , Critical value : $z_{\alpha/2}=1.96$

The formula to confidence interval is given by : -

$\overline{x}\pm z_{\alpha/2}\dfrac{s}{\sqrt{n}}\\\\\Rightarrow\ 10.6\pm (1.96)\dfrac{1.7}{\sqrt{69}}\\\\\approx10.6\pm0.4011=(10.6-0.4011,10.6+0.4011)=(10.1989,\ 11.0011)$

Hence, the 95% confidence interval for the number of chocolate chips per cookie for big chip cookies= $(10.1989,\ 11.0011)$

8 0

4 years ago