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Slav-nsk [51]
2 years ago
12

What is the solution to the following system of

Mathematics
1 answer:
Rufina [12.5K]2 years ago
5 0

Answer:

i think the correct answer of these qusion is -2,3

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Suppose you are investigating the relationship between two variables, traffic flow and expected lead content, where traffic flow
prisoha [69]

Answer:

The answers is " Option B".

Step-by-step explanation:

CI=\hat{Y}\pm t_{Critical}\times S_{e}

Where,

\hat{Y}= predicted value of lead content when traffic flow is 15.

\to df=n-1=8-1=7

 95\% \ CI\  is\  (463.5, 596.3) \\\\\hat{Y}=\frac{(463.5+596.3)}{2}\\\\

     =\frac{1059.8}{2}\\\\=529.9

Calculating thet-critical valuet_{ \{\frac{\alpha}{2},\ df \}}=-2.365

The lower predicted value =529.9-2.365(Se)

463.5=529.9-2.365(Se)\\\\529.9-463.5=2.365(Se)\\\\66.4=2.365(Se)\\\\Se=\frac{66.4}{2.365} \\\\Se=28.076

When 99\% of CI use as the expected lead content: \to 529.9\pm t_{0.005,7}\times 28.076 \\\\=(529.9 \pm 3.499 \times 28.076)\\\\=(529.9 \pm 98.238)\\\\=(529.9-98.238, 529.9+98.238)\\\\=(431.662, 628.138)\\\\=(431.6, 628.1)

8 0
2 years ago
I never see to pretty best friend one of them got to be ugly. if you know you know ​
Elina [12.6K]

Answer:lol

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Can you please help with this please
Hatshy [7]
Mammals: If the number of Mammal exhibits is 25 and there are 75 total exhibits, the Mammal exhibits are 1/3 of the total exhibits at this Zoo. The ratio for 1/3 is 1:3, which is 25:75 in most complex form. That's 33.3 as a percentage, or 33.3%.

Reptiles: If the number of Reptile exhibits is 15 and there are 75 total exhibits, the reptile exhibits are 1/5 of the total exhibits here. The ratio for 1/5 is 1:5, which is 15:75 fully written out. This as a percentage is 20%.

I'll message you the other half of the answers.
8 0
3 years ago
What is the Common denominator?
melomori [17]

[] The fractions are

        \frac{12}{21}\\\\\frac{4}{7}

[] I see that 21 is a multiple of 7, so this one will be simple to solve.

-> 21 / 7 = 3, so we can do the following:

             \frac{4*3}{7*3}=\frac{12}{21}

[] Now they have a common denominator of <u>21</u>

Have a nice day!

     I hope this is what you are looking for, but if not - comment! I will edit and update my answer accordingly. (ノ^∇^)

- Heather

7 0
2 years ago
The perimeter of a rectangle is 52. The length of the rectangle is six less than the width. Find the length and width of the rec
devlian [24]

Create expressions for the length and width of the rectangle.

  • length (l): x - 6
  • width (w): x

Perimeter: 2l + 2w

Substitute (x - 6) for l and (x) for w.

  • 52 = 2(x - 6) + 2(x)

Distribute 2 inside the parentheses.

  • 52 = 2x - 12 + 2x

Combine like terms.

  • 52 = 4x - 12

Add 12 to both sides.

  • 64 = 4x

Divide both sides by 4.

  • x = 16

Substitute 16 for x into the length and width of the rectangle.

  • length: (16) - 6 = 10
  • width: (16) = 16
3 0
3 years ago
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