3 years ago

How do solve for 2m2 +2m-12=0 This if quadratic formula

1 answer:

6 0

$2m^2 +2m-12=0 \ /:2\\ \\m^2+m-6=0\\ \\m^2+3m-2m-6=0\\ \\m(m+3)-2(m+3)=0\\ \\(m+3)(m-2)=0\\ \\m+3=0\ \ \ \vee\ \ \ m-2=0\\ \\.\ \ \ \ m=-3\ \ \ \ \ \ \ \ \ \ \ \ m=2$

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What is the lateral surface area of the cone?

hoa [83]

Answer:

135 pi centimeters squared

Step-by-step explanation:

Hello!

where la is lateral surface area

$first \: the \: formula \: for \: the \: lateral \: surface \: are \: of \: cone \: is \\ la = \pi \times r \times l \\ where \: r = radius \\ l = slant \: height \\ therefore.first \: find \: the \: radius(r) = \frac{d}{2} \\ r = \frac{18cm}{2} = 9cm \\ so \: as \: we \: have \: the \: radius \: we \: can \: solve \: for \: the \: la \\ la = \pi \times r \times l \\ la = \pi \times (9cm) \times (15cm) \\ la = 135\pi \: cm {}^{2}$

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2 years ago

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sergejj [24]

Answer:

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Step-by-step explanation:

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3 years ago

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Triangle ABC is a right triangle. If side AC=5 and side BC=6, What is the measure of side AB?

kirill115 [55]

IF sides AC and BC are the 'legs' of the triangle, then the length of the 3rd side is

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IF side BC is the longest side (hypotenuse) of the triangle, then the length of
the 3rd side is

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3 0

3 years ago

Solve the system of equations by using elimination?<br> 2x+y=8<br> 3x+3/2=12

polet [3.4K]

Answer:

x=7/2 y=1

Step-by-step explanation:

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3 years ago

Use the working backward method to find the solution of the equation.<br> 4y - 5= 31<br> y =

Oduvanchick [21]

Y = 9

4y-5+5=31+5
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3 years ago