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Mathematics

1 answer:

sdas [7]3 years ago

7 0

Answer:

$13.76

Step-by-step explanation:

i used a calculator to find 25% of $55.05

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Factor completely x^2+6x-27?

Ivahew [28]

Answer:

(x+9)(x-3)

Step-by-step explanation:

Find the number that multiplies to make -27 and adds to make 6. In this case it is 9 and -3. Use these numbers to factorise.

7 0

3 years ago

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Help on these please

Ostrovityanka [42]

All the triangles have 180° total angle measurement.

First question:

114 + 37 + x = 180°

151 + x = 180

x = 180 - 151

x = 29°

Second question:

93 + 46 + x = 180

139 + x = 180

x = 180 - 139

x = 41°

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3 years ago

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3r+0.5=18.5 what is r

Crazy boy [7]

18.5-0.5= 18 18/3= 6 So r=6

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3 years ago

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Help me find the figure , area formula and graph the dots and find the area

Advocard [28]

Answer:

Looking at the given points we know that it is going to be a triangle because it only have 3 points. Therefore the figure is a triangle and the area formula would be $A=\frac{1}{2}*b*h$ .

You can look at the attached graph and what we see is that our height of the triangle is from $y=-3$ to $y=4$ which means that our height is 7 units high. We can also see that our base starts at $x=-4$ and ends at $x=4$ making us have a base of 8 units.