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sweet-ann [11.9K]
2 years ago
8

3×0.7= And could you please do the model

Mathematics
1 answer:
otez555 [7]2 years ago
7 0

Answer: 2.1, I don't really know how to show a model for this, its just that when you multiply 3 and 7 you get 21, when you do 0.7 and 3, you just put the decimal place between the 2 and 1.

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Greeley [361]

Answer:

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6 0
3 years ago
Math help, brainly i don't wanna write more words
olchik [2.2K]
1) is the first answer and 2) is the last answer
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A circle has a circumference of 28.26cm. what is the area of the circle? show work please
earnstyle [38]
-circumference is equal to pi×diameter, area is equal to pi×radius^2
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-rounded to the nearest hundredth, the answer is 63.59


8 0
3 years ago
Is the point (−7,1) a solution to the inequality y&lt;0.5x+9?<br> yes or no
pshichka [43]
(-7,1) is a solution to the inequality y<0.5x+9
4 0
3 years ago
The line passes through (9,8) and is perpendicular to x-2y=-16
pickupchik [31]

The equation of line perpendicular to x-2y=-16 passing through (9,8) is: y=-2x+26

Step-by-step explanation:

Given

x-2y=-16\\Adding\ 2y\ on\ both\ sides\\x=2y-16\\Adding\ 16\ on\ both\ sides\\x+16=2y-16+16\\x+16=2y\\2y=x+16\\Dividing\ both\ sides\ by\ 2\\\frac{2y}{2}=\frac{x+16}{2}\\y=\frac{x}{2}+\frac{16}{2}\\y=\frac{1}{2}x+8\\

The equation is in slope-intercept form,  the coefficient of x will be the slope of given line. The slope is: 1/2

As the product of slopes of two perpendicular lines is -1.

\frac{1}{2}*m=-1\\m=-1*\frac{2}{1}\\m=-2

Slope intercept form is:

y=mx+b

Putting the value of slope

y=-2x+b

To find the value of b, putting (9,8) in the equation

8=-2(9)+b\\8=-18+b\\b=8+18\\b=26

Putting the values of b and m

y=-2x+26

Hence,

The equation of line perpendicular to x-2y=-16 passing through (9,8) is: y=-2x+26

Keywords: Equation of line, Slope-intercept form

Learn more about equation of line at:

  • brainly.com/question/1993757
  • brainly.com/question/2048256

#LearnwithBrainly

4 0
3 years ago
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