Gretchen is using an overhead projector to enlarge a drawing so she can make a poster. The original drawing measures 60 mm wide by 80 mm high. She moves the projector so that the width of the projected image is 300 mm. If the original drawing and the projected image are similar figures, what will be the height of the projected image?
A. 225mm
B. 440mm
C.180mm
D. 400mm

Answers

Answer 1

Answer: (D) this is a ratio problem. Take the new width over the old width to get the ratio. so 300/60 is 5. then multiply that by the old height to get the new height. 80 X 5 which is 400.

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how do I graph: 12.50x + 6.25y ≥ 1500? Thank you!

Answers

You need to write it in slope intercept form first and then when u graph it you have to shade cuz there is equal sign

Use a graphing calculator Site.or Go by graphing calculator.

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Answers

The reference angle is -90 deg or -pi/2

I think its 90 degrees

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Answers

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Find the value of x.log 3 x = 4

A.) 7
B.) 12
C.) 27
D.) 81

Answers

Hello from MrBillDoesMath!

Answer:

Choice D, 81

Discussion:

By log 3x = 4 I presume that "3" is the base not a multiplier of x. Assuming it is the base, then the equation is equivalent to

x = 3^4

= 81

This is Choice D.

Thank you,

MrB

Answer:

it's D

Step-by-step explanation:

i did the test

The table shows the amount earned for washing cars. How much is earned for washing 25 cars? 3 cars=$13.50, 6 cars=$27, 9 cars=$40.50, and 12 cars=$54

Answers

You need to find out how much it costs to wash one car, so:

3×=13.50
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A straight line passes through the origin O and the point A(4,-2) find the equation of the line OA

Answers

Answer:

y= -1/2x

Step-by-step explanation:

Equation of the line is always in the form y=mx + c

where c is the y-intercept ( where the graph crosses the y-axis) and m is the gradient.

The straight line passes through the origin which are the points (0,0) hence

gradient= change in y÷ change in x

G= -2-0 ÷ 4-0 =-2÷4= -1/2x

y= 1/2x+c

-2=-1/2(4)+c

-2=-2+c

-2+2=c

c=0

∴ the equation of the line is y=-1/2x

Final answer:

The equation of the line passing through the origin and the point A(4,-2) is y = -0.5x.

Explanation:

In Mathematics, the equation of the line can be found using the point-slope form which is y = mx + c, where 'm' is the slope of the line and 'c' is the y-intercept. Since the line passes through the origin O(0,0), the y-intercept 'c' is 0. The slope 'm' of the line is found by the formula 'change in y/change in x'. Given the point A(4,-2), the change in y (the difference in the y-values of your two points) is -2 - 0 = -2, and the change in x (the difference in the x-values of your two points) is 4 - 0 = 4. Therefore, the slope 'm' is -2/4 = -0.5.

Substitute 'm' and 'c' values in the equation y = mx + c, we get the equation of the line OA as y = -0.5x.

Learn more about Equation of a Line here:

brainly.com/question/21511618

#SPJ2

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