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VMariaS [17]
3 years ago
11

I need help please!!!!!!!!!!!

Mathematics
1 answer:
stealth61 [152]3 years ago
6 0
If the sign is < or >, the line will be dashed.
If the sign is ≤ or <span>≥, the line will be solid.

If the sign is < or </span>≤, shading will be below the line.
If the sign is > or ≥, shading will be above the line.

That being said, both lines will be solid for the inequalities. The first inequality will have shading below the line, the second inequality will have shading above the line.

So options A & B are correct.
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A production manager at a wall clock company wants to test their new wall clocks. The designer claims they have a mean life of 1
TEA [102]

Answer:

The correct answer will be "0.3043".

Step-by-step explanation:

The given values are:

\mu = 15

n=41

\sigma^2=25

then,

\sigma=5

If researchers know representative sample n > 30 and default deviation those who use z-test

∴  P(x>15.4)

⇒  1-P(x

⇒  1-P(\frac{x-\mu}{\frac{\sigma}{\sqrt{n} } }

⇒  1-P(Z

⇒  1-0.695762

⇒  0.3043

6 0
3 years ago
Compute using significant digits. What is the area of a parallelogram with length 17.25 mm and width 5.065 mm?
Dmitriy789 [7]

Answer: Option 'a' is correct

Step-by-step explanation:

Since we have given that

Length of parallelogram =17.25 mm

Width of parallelogram =5.065 mm

As we know the formula for " Area of parallelogram"

Area of parallelogram is given by

Area= length \times breadth\\\\17.25\times 5.065=87.03 \   mm^2

Hence, option 'a' is correct .

8 0
3 years ago
440
Tanya [424]

Answer:

44 degrees

Step-by-step explanation:

if BAC and DAE are complementary then their sum is equal to 90 degrees

90 - 36 = 44 degrees

5 0
3 years ago
Read 2 more answers
The sum of two numbers is 55 and the difference is 9. what are the numbers?
Mars2501 [29]
X + y= 55
x - y= 9
y = 23
x = 32

the numbers are 23 and 32
7 0
3 years ago
Read 2 more answers
Write an equation of a line passing through point p(-2, 6) that is parallel to the line x= -5​
nordsb [41]

Answer:

x= -2

Step-by-step explanation:

x = -5 is a vertical line, so a line parallel would also have to be a vertical line

It goes through the point ( -2,6)

The x coordinate -2

So a line parallel would be x= -2

5 0
3 years ago
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