Find the whole. 30% of what number is 12?

Mathematics

1 answer:

Lena [83]3 years ago

3 0

The answer is 40 your welcome

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Pens and Pencils

Lina20 [59]

Pen=x
Pencil=y
y+0.15=x
y+x=0.69
y+y+0.15=0.69
2y=0.69-0.15
2y=0.54
y=0.54/2
y=0.27 pencils
y+0.15=x
0.27+0.15=x
0x=0.42 pen
150 pencils x0.27=40.5$
225 pens x 0.42=94.5$
Total 40.5$ + 94.50$=135 $
Supplier is right about a priče.

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Choose the third degree polynomial.

kvasek [131]

I think C !!!!!!!!!!!

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4 years ago

What is the slope of the line that passes through the points (6,−10) and (3, -13) ?

vodka [1.7K]

Answer:

m = 1

Step-by-step explanation:

m = (-13 - - 10) / (3 - 6)

m = -3/-3

m = 1

8 0

2 years ago

What are the approximate solutions of 4x2 + 3 = −12x to the nearest hundredth?

Gwar [14]

First
$4x^{2} + 12x + 3 = 0$
determine if this equation were factorable, it's not for this one
so I use quadratic formula, try to search the formula online

$x1 = \frac{-12 + \sqrt{(12)^{2} - 4*4*3} } {2*4} = \frac{-12 + 4\sqrt{6} }{8} = \frac{4(-3 + \sqrt{6}) }{8} = \frac{-3 + \sqrt{6}}{2} = - 0.28$
$x2 = \frac{-12 - \sqrt{(12)^{2} - 4*4*3} } {2*4} = \frac{-12 - 4\sqrt{6} }{8} = \frac{4(-3 - \sqrt{6}) }{8} = \frac{-3 - \sqrt{6}}{2} = - 2.72$

<span>x ≈ −2.72 and x ≈ −0.28 is the solution</span>

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A family is on a road trip, and they have

Setler [38]

500 KM because 150•100 (150 x 100/30 that's the total) 15,000/30=500 KM hope his helps

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