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MariettaO [177]

3 years ago

9

A triangular window pane has a base of 30 inches and a height of 24 inches.What is the area of the window pane?

2 answers:

densk [106]3 years ago

8 0

54 or it 180 i got 54 by adding 30 and 24in and got 180 by multiplying

aleksandr82 [10.1K]3 years ago

6 0

Answer: 360 sq inches

Step-by-step explanation: The formula for finding the area of a triangle is 1/2*bh. So, plug-in your numbers: 1/2*(30*24). Then multiply the value in the perentheses which is 720 and then you multiply that by 1/2 (0.5) or you can divide it by 2. When you divide it by 2 or multiply it you would get 360.

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PLSSS HELP IF YOU TURLY KNOW THISS

Vladimir [108]

Answer:

B

Step-by-step explanation:

There is two wholes and one half.

6 0

2 years ago

Decide if Y=3x-9 and Y=4x-9 have many solutions, one solution, or no solutions.

Nuetrik [128]

Answer:

(0,-9)

Step-by-step explanation:

Well first we need to solve the rowing eqation by combining like terms and separating x.

$3x - 9 = 4x - 9$

So let’s do -3x

-9 = x -9

+9

x = 0.

So if x is 0 we can plug that in one of the equations.

y = 4(0) - 9

y = -9

So the solution where the 2 lines meet is at (0,-9)

For more proof look at the image below.

7 0

3 years ago

Read 2 more answers

The state highway department is studying traffic patterns on one of the busiest highways in the state. As part of the study, the

larisa86 [58]

Answer:

The need to sample 76 days.

Step-by-step explanation:

We have that to find our $\alpha$ level, that is the subtraction of 1 by the confidence interval divided by 2. So:

$\alpha = \frac{1-0.99}{2} = 0.005$

Now, we have to find z in the Ztable as such z has a pvalue of $1-\alpha$ .

So it is z with a pvalue of $1-0.005 = 0.995$ , so $z = 2.575$

Now, find the margin of error M as such

$M = z*\frac{\sigma}{\sqrt{n}}$

In which $\sigma$ is the standard deviation of the population and n is the size of the sample.

How many days do they need to sample

We need to sample n days.

n is found when M = 300.

We have that $\sigma = 1010$

So

$M = z*\frac{\sigma}{\sqrt{n}}$

$300 = 2.575*\frac{1010}{\sqrt{n}}$

$300\sqrt{n} = 2.575*1010$

$\sqrt{n} = \frac{2.575*1010}{300}$

$(\sqrt{n})^{2} = (\frac{2.575*1010}{300})^{2}$

$n = 75.1$

Rounding up

The need to sample 76 days.

3 0

2 years ago

When Danny gets wild l, his mom tells him to do laps around the block. His block is 66 yards wide and 80 yards long. How many ya

Georgia [21]

Answer:

146 or 5,280

Step-by-step explanation:

146: you do 66 + 80

5,280: you do 66 x 80

hope this helps XD

4 0

3 years ago

Read 2 more answers

10 points :) Thanks sm! (attached below)

givi [52]

Answer:

Average : 10,724.2857 miles

Step-by-step explanation:

To determine the mean we can simple find the average, adding all the miles the car has traveled, over the number of days. See working below -

$\frac{10150+10211+10424+10769+10884+11155+11477}{7}$

Adding the numerator values : $10150+10211+10424+10769+10884+11155+11477=75070$

$\frac{75070}{7} = 10724.28571\dots$

Ling traveled an average of about 10,724.2857 miles.

3 0

3 years ago