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weqwewe [10]
3 years ago
14

What does 3/4+1/5 equal

Mathematics
2 answers:
katovenus [111]3 years ago
7 0

Answer:

19/20

Step-by-step explanation:

You have 3/4 + 1/5 which you can't add because you don't have like denominatiors so you multipliy 3/4 by 5 and 1/5 by 4 which gives you         15/20 + 4/20 = 19/20

Veseljchak [2.6K]3 years ago
4 0

Answer:

19/20

Step-by-step explanation:

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Solve the inequality |3x-6|≤9
avanturin [10]
3x-6≤9
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3 years ago
Chicken Delight claims that 87% of its orders are delivered within 10 minutes of the time the order is placed. A sample of 80 or
jeka57 [31]

Answer:

There is strong evidence that less than 87% of the orders are delivered in less than 10 minutes.

Decision rule: Reject the null hypothesis if (P-value < level of significance)

Test statistic z=-2.70

Decision: Reject the null hypothesis (0.003<0.010)

Step-by-step explanation:

In this question we have to test an hypothesis.

The null and alternative hypothesis are:

H_0: \pi\geq0.87\\\\H_a:\pi

The significance level is assumed to be 0.01.

The sample of size n=80 gives a proportion of p=61/80=0.7625.

The standard deviation is:

\sigma=\sqrt{\frac{\pi(1-\pi)}{N} }=\sqrt{\frac{0.87*0.13}{80} }=0.0376

The statistic z is then

z=\frac{p-\pi+0.5/N}{\sigma}=\frac{0.7625-0.87+0.5/80}{0.0376} } =\frac{-10125}{0.0376} =-2.70

The P-value is

P(z

The P-value (0.003) is smaller than the significance level (0.010), so the effect is significant. The null hypothesis is rejected.

There is strong evidence that less than 87% of the orders are delivered in less than 10 minutes.

Decision rule: Reject the null hypothesis if (P-value < level of significance)

Test statistic z=-2.70

Decision: Reject the null hypothesis (0.003<0.010)

6 0
3 years ago
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kolbaska11 [484]

Answer:

x=9

Step-by-step explanation:

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7 0
2 years ago
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point, line, plane............................

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Total revenue is 3,000 cost of goods 1,500 total selling expence is 500 what is profit
12345 [234]
Cost of goods = 1,500
Selling expense = 500

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Profit = 1000

Hope this explains it.
8 0
3 years ago
Read 2 more answers
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