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ella [17]
3 years ago
15

the prices of three types of pens for eight 7 and $5 respectively a teacher paid 1 $60 for 22 pens find the number of pens that

he bought.
Mathematics
1 answer:
nevsk [136]3 years ago
4 0

Answer:65

Step-by-step explanation:

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Pls I need help on this
Sav [38]

Answer1:

-1

Step-by-step explanation:

distributed, so it must be the number before parenthesis

-(-3c+5) = -1(-3c+5)

3 0
3 years ago
The figure is made up of a cylinder and a half sphere. What is the volume of the composite figure? Use 3.14 for Pi. Round to the
vodomira [7]

Answer:

Step-by-step explanation:

65

6 0
3 years ago
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Katie bought a dozen donuts for $1.99. Write an equation which shows how to find the price (p) of each donut
zimovet [89]
1.99 divided by 12 would give u about 0.66$
3 0
4 years ago
Given: 5(x - 2) = 2x - 4 Prove:<br> What’s the The proof ?
Elena L [17]

Answer:

Step-by-step explanation:

its not right equation

because

5X - 10 ≠ 2X - 4

8 0
4 years ago
After comparing response times between the audio and picture portions of the MIT test, the t-test resulted in a t-value of 2.97.
Veronika [31]

Answer:

e. reject the null hypothesis the p value is less than 0.05. therefore the difference is significant.

Step-by-step explanation:

given that after comparing response times between the audio and picture portions of the MIT test, the t-test resulted in a t-value of 2.97.

test statistic t = 2.97

Sample size n =250

Critical value of t at 95% is 1.96

We find that test statistic absolute value is greater than 1.96

So p value would be less than 0.05

This implies that null hypothesis stands in the rejected region.

So reject null hypothesis would be correct conclusion.  Sample size cannot be said to be small as more than 30 itself is a good sample size.

e. reject the null hypothesis the p value is less than 0.05. therefore the difference is significant.

5 0
3 years ago
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