3 years ago

I need help with question 3 and 4

Mathematics

1 answer:

katrin2010 [14]3 years ago

7 0

Question 3. You divide 5 1/4 by 3/4 then multiply that by 20.
The answer is 140

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Solve x - 6x = 40 by factoring. What is the solution?

marta [7]

Answer:

x=-8

Step-by-step explanation:

collect like terms

-5x=40

divide both sides of the equation by -5

so the answer would be x=-8

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3 years ago

Solve for 30 + 9 43 a =

Bingel [31]

Answer:

a=39

Step-by-step explanation:

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A cylinder and a cone have the same diameter: 8 inches. The height of the cylinder is 9 inches. The height of the cone is 18 inc

Elan Coil [88]

$\sf Cylinder ~volume = \pi r^2 h \\ \\ v = \pi (4)^2(9) \\ \\ v=\pi (16)(9) \\ \\ v=144 \pi \\ v=452.16\\ \\ \\ Cone~volume = \frac{1}{3} \pi r^2 h \\ \\ v = \frac{1}{3} \pi (4)^2 (18) \\ \\ v=96 \pi \\ v=301.44 \\ \\ \\ The~ volume ~of ~a ~cylinder ~is~ 1.5~ times~ more ~than ~the ~volume ~of~a~cone.$

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3 years ago

How do you factorize (x-2) ^2-(x+3)^2?

vaieri [72.5K]

Answer:

x^2-4x+4-(x^2+6x+9)

Step-by-step explanation:

=x^2-4x+4-x^2-6x-9

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3 years ago

Please help me with number 6

Genrish500 [490]

30=(10*3*x)/2
*2 *2
60=10*3*x
60=30x
60/30=30x/30
2=x

7 0

3 years ago