2 years ago

Select the correct answer.

Mathematics

1 answer:

miss Akunina [59]2 years ago

5 0

The answer is A. i just had that question

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Solve the following equation simultaneously 2a-3b+10=0, 10a+6b=8

tia_tia [17]

$2a -3b +10 =0\\\\10a+ 6b -8 =0\\\\\text{Using cross multiplication method}\\\\\\ \dfrac a{(-3)(-8) - 6(10)} = \dfrac b{10(10) - 2(-8)} = \dfrac 1{ 2(6) - (-3)(10)}\\\\\\\implies \dfrac a{24-60} = \dfrac b{100+16} = \dfrac 1{12+30}\\\\\\\\\implies -\dfrac {a}{36} = \dfrac b{116} = \dfrac 1{42}\\\\\\\text{Hence}\\\\a = - \dfrac{36}{42} = -\dfrac 67 \\\\\\ b= \dfrac{116}{42} = \dfrac{58}{21}$

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2 years ago

Surface area and volume

Wittaler [7]

Triangular prism
length of slanted side:
sqrt(3^2 + 4^2) = 5
SA = 2(1/2)(8)(3) + 8(12) + 2(5)(12) =240
V = (1/2)(8)(3)(12) = 144

cuboid
SA = 2(7x6) + 2(7x5) + 2(6x5) = 214
V = 7x6x5 = 210

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3 years ago

How would you write x+3y=3 in y=mx+b format

Triss [41]

X+3y=3
First add subtract the x
3y=-x+3
Then divide 3
Y=-1/3x+1

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3 years ago

Read 2 more answers

When sales representatives for a pharmaceutical company drive out of town meetings that require an overnight stay, they receive

blsea [12.9K]

X=number of miles

$329=$175+$0.70x
329-175=.70x
154=.70x
154/.70=x
220miles =x

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