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3 years ago

_+349=1250 and 865-=347 HELP

1 answer:

4 0

The answers are 901 and 518.

In order to find out these answers, you first figure out whether you are adding or subtracting. Take the first one for example: ____ + 349 = 1250. You are adding. So what you can do is do the opposite, which is subtract in this instance, and put the numbers in order with the number after the equal sign first. That's how I ended up with 901.

Now with the other problem, its not as simple. We have to subtract 347 from 865.

Hope this helps :)

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If the perimeter of an equilateral triangle is 24cm, find the length of it's side

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1 year ago

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gogolik [260]

Answer:

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You can plug the given y value into the second equation to get:

$x^2+(3x-30)^2=100\\x^2+9x^2-180x+900=100\\10x^2-180x+800=0\\10(x^2-18x+80)=0\\10(x-8)(x+10)=0\\x= 8, 10\\y= -6, 0$

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3 years ago

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In the figure above, quadrilateral ABCD is a parallelogram. Let x represent the measure of angle GBF, y represent the measure of

ira [324]

Answers:
measure angle x = 40°
measure angle y = 35°
measure angle z = 55°

Explanation:
Part (a): getting angle x:
In triangle BED, we have:
measure angle BED = 90°
measure angle BDE = 50°
Therefore:
measure angle DBE = 180 - (90+50) = 40°
Now, we have angle DBE and angle GBF vertically opposite angles.
This means that they are both equal. Therefore angle GBF = 40°
Since angle GBF is x, therefore:
x = 40°

Part (b): getting angle y:
We know that the sum of measures of angles on a straight line is 180.
This means that:
angle GBF + angle GBC + angle CBE = 180
We have:
angle GBF = 40°
angle GBC = 105°
angle CBE = y
Therefore:
40 + 105 + y = 180
y = 35°

Part (c): getting angle z:
In triangle BCE, we have:
measure angle BCE = z
measure angle BEC = 90°
measure angle CBE = 35°
Therefore:
z + 90 + 35 = 180
z = 55°

Hope this helps :)

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3 years ago

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2 years ago

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Solnce55 [7]

Answer:

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3 years ago

_____+349=1250 and 865-____=347 HELP

_+349=1250 and 865-=347 HELP