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Tom [10]
4 years ago
14

Can someone please help me on question 1 and 2 . Thank you.

Mathematics
1 answer:
crimeas [40]4 years ago
4 0

Answer:

sorry I can't view

Step-by-step explanation:

i have no this app sorry

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Change 121/11 to a whole or mixed number
Mila [183]
Just divide 121 by 11 to get your answer.
8 0
3 years ago
Read 2 more answers
I want to know how to solve 5x-3y==23
Natasha_Volkova [10]
(5x - 3y =23) + (7x +3y = -11) =

12x = 12
x = 1

Substitute
5(1) -3y =23
5 - 3y = 23
-3y = 18
y = -6


x=1 and y=-6
4 0
3 years ago
Set A and the universal set U are defined as follows.
siniylev [52]

Part (a)

<h3>Answer:   Ø</h3>

This is the empty set

------------------

Explanation:

It doesn't matter what set A is composed of. Intersecting any set with the empty set Ø will always result in the empty set.

This is because we're asking the question: "What does some set A and the empty set have in common?". The answer of course being "nothing" because there's nothing in Ø. Not even the value zero is in this set.

We can write Ø as { } which is a set of curly braces with nothing inside it.

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

Part (b)

<h3>Answer:  {1,2,3,4,5,6}</h3>

-----------------

Explanation:

When you union the universal set with any other set, you'll get the universal set.

The rule is A \cup B = B where I've made B the universal set to avoid confusion of the letter U and the union symbol \cup which looks nearly identical.

Why does this rule work? Well if an item is in set \overline{A}, then it's automatically in set U (everything is in set U; it's the universe). So we're not adding anything to the universe when applying a union involving this largest set.

It's like saying

  • A = set of stuff inside a persons house
  • \overline{A} = set of stuff outside a persons house (ie stuff that is not in set A)
  • U = set of every item

we can see that \overline{A} \cup U will basically form the set of every item, aka the universal set.

5 0
3 years ago
Find the slope of the line that passes through (3, 5) and (1, 14).
Advocard [28]

Answer:

- 9/2

Step-by-step explanation:

slope m = (y2 - y1) /(x2 - x1) = (14 - 5)/(1 - 3)= 9/(-2)= - 9/2

4 0
4 years ago
It is desired to check the calibration of a scale by weighing a standard 10-gram weight 100 times. Let μ be the population mean
nexus9112 [7]

Complete question :

It is desired to check the calibration of a scale by weighing a standard 10 g weight 100 times. Let µ be the population mean reading on the scale, so that the scale is in calibration if µ = 10. A test is made of the hypotheses H0:µ = 10 versus H1:µ ≠ 10. Consider three possible conclusions: (i) The scale is in calibration, (ii) The scale is out of calibration, (iii) The scale might be in calibration.

Which of the three conclusions is best ifH0 is rejected?

Answer:

The scale is out of calibration

Step-by-step explanation:

The null hypothesis ; H0

H0 : μ = 10 ; if this hold true, then the scale is in calibration

Alternative hypothesis ; H1

H1 : μ ≠ 10 ; if this holds true, then the scale is out of calibration

If the Null hypothesis, H0 is rejected, it means that, there is significant evidence to support the alternative hypothesis ; that the scale is out of calibration.

Hence, the best conclusion is that, the scale is out of calibration.

3 0
3 years ago
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