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svet-max [94.6K]
2 years ago
12

Please help me asap.​

Mathematics
2 answers:
Roman55 [17]2 years ago
6 0

Answer:

3. 93.48ft

Step-by-step explanation: You just multiply 11.4ft and 8.2ft!

Misha Larkins [42]2 years ago
6 0

Answer:

46.74ft^2

Step-by-step explanation:

Equation: A = b/2 x h

base = 11.4ft

height = 8.2ft

A = 11.4/2 x 8.2

A = 5.7 x 8.2

A = 46.74

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Lexie began making posters for the school awards banquet. She can make 6 posters per minute. Zach joined her 10 minutes after sh
Snowcat [4.5K]
10 * 6 = 60 by the time Zach joins so 125-60 = 65
Now 6 (lexie) +7 (zach)  = 13 (together) and 65/13 = 5. 
6*5 = 30 and 7*5 = 35. 35+30 = 65
Your answer is 5. 
7 0
3 years ago
In the contiguous United States, the ratio of states that border an ocean to states that do not border an ocean is 7:9. How many
Luda [366]

Answer:

21

Step-by-step explanation:

The contiguous U.S. consist of all states beside Alaska and Hawaii; therefore, there are 48 contiguous U.S. states. However, the ratio given to us only consists of 16 states [7 + 9 = 16]. If we need to expand the ratio, we multiply 16 by 3 to get 48. Thus, we also multiply each of the terms by 3, and the ratio becomes 21:27. Therefore, the number of contiguous U.S. states that border an ocean is 21.

3 0
3 years ago
Read 2 more answers
In a survey conducted by the Gallup​ Organization, 1100 adult Americans were asked how many hours they worked in the previous we
const2013 [10]

Answer:

1) Increase the sample size

2) Decrease the confidence level

Step-by-step explanation:

The 95% confidence interval built for a sample size of 1100 adult Americans on how much they worked in previous week is:

42.7 to 44.5

We have to provide 2 recommendations on how to decrease the margin of Error. Margin of error is calculated as:

M.E=z_{\frac{\alpha}{2} } \times \frac{\sigma}{\sqrt{n}}

Here,

z_{\frac{\alpha}{2} } is the critical z-value which depends on the confidence level. Higher the confidence level, higher will be the value of critical z and vice versa.

\sigma is the population standard deviation, which will be a constant term and n is the sample size. Since n is in the denominator, increasing the value of n will decrease the value of Margin of Error.

Therefore, the 2 recommendations to decrease the Margin of error for the given case are:

  1. Increase the sample size and make it more than 1100
  2. Decrease the confidence level and make it lesser than 95%.
7 0
3 years ago
I dont understand
crimeas [40]
To determine the inverse of a function, we first write the parent function in terms of y. So, in this part the x would be isolated to one side of the equation. Then, with the new form of the parent function, we switch the x into y and y to x. The new function would be the inverse function. For the given function, we do as follows:

<span> y=-4/x + 1 
y - 1 = -4/x
x ( y - 1 ) = -4
x = -4 / (y -1)

Replacing x into y and y into x,

</span>y = -4 / (x -1)

<span>Therefore, the inverse is y=-a/x-b where a = 4 and b = 1.</span>
6 0
2 years ago
What is 179.4 ÷ 2.3 plz say it correctly
ella [17]
The answer is 78. I'm pretty sure.
7 0
3 years ago
Read 2 more answers
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