3 years ago

A machine cuts 25 circuit boards every 5 minutes. What is the unit rate of production for the machine?

Mathematics

1 answer:

irina1246 [14]3 years ago

8 0

Answer:

25 divided by 5 = 5, so the unit rate is 5 circuit boards every minute.

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the map distance between A and B is 15 cm the scale of the map is 1 cm is 7 km what is the ground distance

Afina-wow [57]

Answer:

105 km

Step-by-step explanation:

so, 1 cm on the map is 7 km in real life.

15 cm is 15 times 1 cm

so, the real life distance is 15×7 = 105 km

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3 years ago

Help me find Sample variance and standard deviation

AnnZ [28]

First, find the mean. You'll need it to compute the variance.

$\bar x=\displaystyle\frac15\sum_{i=1}^5x_i=\dfrac{21+10+6+7+11}5=11$

The variance of the sample is then computed with the formula

$s^2=\displaystyle\dfrac1{5-1}\sum_{i=1}^5(\bar x-x_i)^2=\dfrac{(21-11)^2+\cdots+(11-11)^2}4=\dfrac{71}2=35.5$

The standard deviation is the square root of the variance, so

$s=\sqrt{35.5}\approx5.958$

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3 years ago

How does understanding the characteristics of public speaking affect how you view a speech?

umka2103 [35]

Answer:

I think its C

Step-by-step explanation:

By learning characteristics of a speech, It should be easier to determine the impact of a specific speech.

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3 years ago

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Mr. Sasha teaches 4 math classes, with the same number of students in each class. Of those students, 80 are sixth graders and 40

STatiana [176]

80=6th graders
40=5th graders

80+40=120
120/22= 60/11
120/25=24/5
120/30= 4

There are 30 students in each class because he teaches 4 class and 120/30 will give you 4.

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3 years ago

Simplify sec(t)cot(t) to a single trig function or constant with no fractions

lana66690 [7]

Answer:

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