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Ivanshal [37]
3 years ago
7

Work out a) 2/7 + 3/7

Mathematics
2 answers:
vivado [14]3 years ago
7 0

Answer:5/7

Step-by-step explanation:

Savatey [412]3 years ago
4 0

Answer:

0.714285

Step-by-step explanation:

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two angles form a straight angle. what is the one angle measures 89°. what is the measure of the other angle?
ICE Princess25 [194]
A straight line is = to 180 degrees (straight angle) so the formula would be
X+89=180
subtract the 89 from both sides and you get x=91
so the other angle is 91 degrees
4 0
4 years ago
Read 2 more answers
A simple random sample of size n equals 200 individuals who are currently employed is asked if they work at home at least once p
____ [38]

Answer: 99% of confidence interval for the population proportion of employed individuals who work at home at-least once per week

//0.20113,0.20887[/tex]

Step-by-step explanation:

<u>step 1:-</u>

Given sample  size n=200

of the 200 employed individuals surveyed 41 responded that they did work at home at least once per week

 Population proportion of employed individuals who work at home at least once per week  P = \frac{x}{n} =\frac{41}{200} =0.205

Q=1-P= 1-0.205 = 0.705

<u>step 2:-</u>

Now  \sqrt{\frac{P Q}{n} } =\sqrt{\frac{(0.205)(0.705)}{200} }

=0.0015

<u>step 3:-</u>

<u>Confidence intervals</u>

<u>using formula</u>

(P  -  Z_∝} \sqrt{\frac{P Q}{n},} (P  +  Z_∝} \sqrt{\frac{P Q}{n},

(0.205-2.58(0.0015),0.205+2.58(0.0015)\\0.20113,0.20887

=0.20113,0.20887[/tex]

<u>conclusion:</u>-

99% of confidence interval for the population proportion of employed individuals who work at home at-least once per week

//0.20113,0.20887[/tex]

4 0
3 years ago
Help me on this please
Solnce55 [7]

Answer:

c

Step-by-step explanation:

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tresset_1 [31]
The correct answer is b that’s the right choice
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The value of x square +y square when x =-3and y =4 is
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Blackblackbalckcdgdbdndbdhrhrhhrrh

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3 years ago
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