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IrinaVladis [17]
4 years ago
6

What is the exact sum of 1.23 + 0.71 and can you please explain?

Mathematics
2 answers:
irinina [24]4 years ago
8 0

Answer:

1.94

Step-by-step explanation:

Stack them and add, starting at the right

 1.23

+0.71

---------

      4

 1.23

+0.71

---------

     9 4

 1.23

+0.71

---------

 1.  9 4

Hope this helps! :)

evablogger [386]4 years ago
6 0

Answer: 1.94

Step-by-step explanation: 1.32 plus .71 is 1.94

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Express the solution graphically of – }(2x + 1) < 3.
Anit [1.1K]

Answer:

The third one counting from the top.

Step-by-step explanation:

We have the inequality:

(-1/3)*(2x + 1) < 3

The first thing we need to do is isolate x on one side of the inequality.

First we can by -3 in both sides of the inequality, and remember, because we are multiplying by a negative number, the inequality sign changes its direction:

(-3)*(-1/3)*(2x + 1) > 3*(-3)

(2x + 1) > -9

Now we can subtract 1 in both sides:

2*x + 1 - 1 > -9 - 1

2*x > -10

Now we can divide by 2 in both sides:

2*x/2 > -10/2

x > -5

Then we should see a number line such that all the points at the right of -5 are colored.

The correct option is the third one, counting from the top.

7 0
3 years ago
Compute the conditional probabilities from the two-way frequency table.
Natali5045456 [20]

Answer:

The table is show clearly in the figure attached.

P(boy if favourite activity is swimming) = 8/17 = 0.47

P(girl if favourite activity is sport) = 7/27 = 0.26

P(girl if favourite activity is reading) = 4/6 = 0.67

P(boy if favourite activity is sport) = 20/27 = 0.74

P(favourite activity is swimming if a girl) = 9/20 = 0.45

P(favourite activity is reading if a boy) = 2/30 = 0.07

P(favourite activity is swimming if a boy) = 8/30 = 0.27

P(favourite activity is reading if a girl) = 4/20 = 0.2

6 0
3 years ago
1. James and Alexis simplified the expression 5 + 42 - 6/3. James' said the answer is
Trava [24]

Answer:

19

Step-by-step explanation:

5 + 4^2 - 6/3

= 5 + 16 - 2

= 21 - 2

= 19

4 0
3 years ago
Which expression is equivalent to √-80?<br> 4√5<br> -4√5<br> -4i √ 5<br> 4i √ 5
miskamm [114]

Answer:

  4i√5

Step-by-step explanation:

\sqrt{-80}=\sqrt{(-1)(16)(5)}=\sqrt{-1}\cdot\sqrt{16}\cdot\sqrt{5}=4i\sqrt{5}

6 0
3 years ago
Any one have ideas of how to do this... haha I am so lost
Anastasy [175]
How the heck r we supposed to solve that if it says “evaluate 5!”
4 0
3 years ago
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