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Blizzard [7]
3 years ago
9

Which calculation will always give a result greater than 1?

Mathematics
1 answer:
masha68 [24]3 years ago
5 0

Answer:

1 3/4 - a<3/4

proof:

1 3/4 -a<3/4

=>1 3/4 - 1 3/4 -a<3/4- 1 3/4

=>-a<-1

=>a>1

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Which represents the solution set of 5(x+5) &lt;85?
oksano4ka [1.4K]

Answer:

X<12 first choice.

Step-by-step explanation:

5(x+5) <85

5x +25 < 85

5x <60

X<12

Hope this helps..

8 0
3 years ago
A coin is tossed four times What is the probability of getting four heads? (1 mark) a) b) What is the probability of getting exa
BlackZzzverrR [31]
<h2>Answer:</h2>

1. A coin is tossed four times. What is the probability of getting four heads?

Each toss has a 1/2 chance of getting a head.

So the chance of getting all four heads can be calculated as :

1/2\times1/2\times1/2\times1/2=1/16

2. A coin is tossed four times. What is the probability of getting two heads?

Each toss can have 2 results, so 4 flips will have 2^{4} or 16 results.

Getting two heads means getting two tails also. So, we can get the number of times two heads come = \frac{4!}{2!2!} = 6

We can write the groups like - {HHTT,HTHT,HTTH,THHT,THTH,TTHH}

So, the required probability is : 6/16 or 3/8.

3. Not getting two heads means getting 3 tails and 1 head or all tails.

Probability of having all tails = 1/2\times1/2\times1/2\times1/2=1/16

Probability of one head(1st trial) and three tails = 1/16

Probability of one head (2nd trial) and three tails (the 1st, 3rd and 4th trials) = 1/16

Probability of one head (3rd trial) and three tails (the 1st, 2nd and 4th trials) = 1/16

Probability of one head (4th trial) and three tails (the 1st, 2nd and 3rd trials) = 1/16

So, the total probability showing only one or none head and at least three tails = 1/16+1/16+1/16+1/16+1/16=5/16

6 0
3 years ago
Which equation is a related equation
ki77a [65]
D , because 28-9=21 and 21=x
4 0
3 years ago
Find the interior angle sum for the following polygon​
wolverine [178]

Answer:

1620°

Step-by-step explanation:

The figure is an 11-sided polygon and is called hendecagon

The interior angle sum:

180( n-2)   n=11

=180(11-2)

=180(9)

=1620°

I hope this help you

5 0
3 years ago
amir lent Rs. 600 to hameed for 2 years and Rs. 150 to aman for 4 year and received altogether from both Rs. 90 as simple intere
aniked [119]

Interest = Pin = principal * interest rate * number of years

Let interest rate be i, then
600*i*2+150*i*4=90
1200i+600i = 90
i=90/(1200+600)=90/1800=1/20=0.05 or 5%

8 0
3 years ago
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