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lara [203]
3 years ago
8

Please help due today

Mathematics
1 answer:
timama [110]3 years ago
7 0

Answer:

tetrahedral

Step-by-step explanation:

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Consider the equation 3x + 90 + 2x = 360 how do we solve this?
Ivahew [28]

Answer:

54

Step-by-step explanation:

First add like terms: 5x+90=360

Then subtract 90 from both sides: 5x=270

Then divide both sides by 5: x=54

6 0
3 years ago
look at my the expression below. 1/2 (a+b) - (a-b)2 what is the value of the expression when a= 18 and b =14?
oksano4ka [1.4K]
8 because 18+14 =32 then divide 32 by 2. Then 18-14= 4 then multiply that by 2 and you get 8. 16 -8 = 8
3 0
3 years ago
$27 for 4 large pizzas or $32 for 5 large pizzas​
Blababa [14]

Answer: 5 large

Step-by-step explanation:

$6.75 per pizza for 4 large pizzas

$6.40 per pizza for 5 large pizzas

5 0
3 years ago
Read 2 more answers
Question on Statistics and Confidence Intervals
Digiron [165]

The phrasing "nine times out of ten" means 9/10 = 0.90 = 90% is the confidence level. We're confident 90% of the time that the confidence interval captures the population parameter we're after (in this case mu = population mean)

The portion "have an average score within 5% of 75%" means that 75% = 0.75 is the center of the confidence interval, and it goes as low as 0.75 - 0.05 = 0.70 and as high as 0.75 + 0.05 = 0.80

This confidence interval is from 70% to 80%, meaning that nine times out of ten, we're confident that the average score is between 70% and 80%

We write the confidence interval as (0.70, 0.80). It's common to use the notation (L, U) to indicate the lower (L) and upper (U) boundaries. You might see the notation in the form L < mu < U. If so, then it would be 0.70 < mu < 0.80; either way they mean the same thing.

The margin of error is 0.05 as its the 5% radius of the interval. It tells us how far the most distant score is from the center (75%)

=========================================

In summary, we have these answers

  • confidence level = 90%
  • margin of error = 5% = 0.05
  • confidence interval = (0.70, 0.80)
  • interpretation = We're 90% confident that the average exam score is between 0.70 and 0.80
4 0
3 years ago
Need answer quick for an assignment please.
lianna [129]

Answer:

y= 10x+7

Step-by-step explanan

7 0
3 years ago
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