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valina [46]
2 years ago
5

Find the least common multiple (LCM) of 7, 10, and 20.

Mathematics
2 answers:
Aleonysh [2.5K]2 years ago
7 0

Answer:

140

Step-by-step explanation:

140 is the first multiple that all 3 numbers share.

sveticcg [70]2 years ago
5 0
140


When finding the multiples of 7,10, and 20, the first number you see they all have in common besides 1, is 140
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____ [38]

Answer:

3x+7

Step-by-step explanation:

Simply changing the y intercept will make both lines parallel without changing its slope

5 0
3 years ago
Examine each set of functions and determine which has the greater rate of change, if either. Explain your reason.
dimaraw [331]

Answer:

The Spotted Cows delivery service has a greater rate of change.

Explanation

The Spotted Cows function is: y = 2.8x + 2

Dairy Farms function is: y = 2.1x + 10

I have graphed these two functions to determine which has a greater rate of change. The red line represents the Spotted Cow service while the blue represents the Dairy Farms service. On the graph you can see that the red line intersects and shifts above the blue line, meaning the rate increases at a higher rate than the blue.

Hope this helps!

6 0
3 years ago
Solve the system of equations by the substitution method
slava [35]

Answer:

x=0.5

y = 10.5

Step-by-step explanation:

y = 3x + 7

y = 5x + 8

3x + 7 = 5x + 8

3x - 5x=  8 - 7

2x = 1

x= 1/2

x=0.5

y = 5x + 8

y = 5(0.5) + 8

y = 2.5 + 8

y = 10.5

8 0
3 years ago
The diameter of a spindle in a small motor is supposed to be 5.8 millimeters (mm) with a standard deviation of 0.14 mm. If the s
Citrus2011 [14]

Answer: A. H0: Mean= 5 and Ha: Mean is not equal to 5.

Step-by-step explanation:

Definitions:

  • Null hypothesis (H_0) is a statement describing population parameters according to the objective of the study. It takes "≤,≥,=" signs.  
  • Alternative hypothesis(H_a)  is a statement opposite to the null hypothesis elaborating population parameters according to the objective of the study. It takes ">, <, ≠" signs.

Given: The diameter of a spindle in a small motor is supposed to be 5.8 millimeters.

If the spindle is either too small or too large, the motor will not work properly. so, Mean diameter ≠ 5.8 to work correctly.

i.e. H_a: \text{Mean}\neq 5.8

So, H_a: \text{Mean =5.8}

The required null and alternative hypotheses:

H0: Mean= 5 and Ha: Mean is not equal to 5.

7 0
3 years ago
Marcus solved a problem and found out that 190% of 20 is 380. Is he correct
avanturin [10]

Answer: He is Incorrect, It's 38

Work: For this question, I did the Cross-Product Method. The Cross Product Method is when you solve equation via to fractions. With the CPM, One one side of the fraction, I had x / 20 (Twenty being the whole number) and on the other side, I had 190/100 (190 being the percent) After setting this up, I made the equation. 190 times 20 is 3800, and the other multiplication is 100 times x which is 100x. So, the new equation is 3800 = 100x. I divided both sides by 100, and the answer is 38 = x

<em>I hope this helps, and Happy Holidays! :)</em>

8 0
2 years ago
Read 2 more answers
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