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3 years ago

I need help on this question

Mathematics

1 answer:

Flura [38]3 years ago

6 0

Answer:

you are adding a dollar and 50 cents each time

Step-by-step explanation:

then find your y and x and plot it

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Part 2/2 6-10 <br> Im so tired and staring at a bright screen gives me a headache =/

atroni [7]

Answer:

Step-by-step explanation:

the first 1 is lamarck

the second one is 1,3,4

then last one is the 4th one

7 0

4 years ago

The average weight of 7 potted plants is 23 pounds. An 8th potted plant is added to the pallet,

cluponka [151]

Answer:

The weight of the 8th plant is 39lb

Step-by-step explanation:

Given:

Average Weight of 7 plants = 23lb

Average Weight of 8 plants = 25lb

Required:

Weight of the 8th plant

To solve this, the total weight of the initial 7 plants need to be calculated;

$Average = \frac{Sum-of-weights}{Number-of-Plants}$

Substitute 23 for Average and 7 for Number of plants

$23 = \frac{Sum-of-weights}{7}$

Multiply both sides by 7

$7 * 23 = \frac{Sum-of-weights}{7} * 7$

$161 = Sum-of-weights$

Hence, the 7 plants weigh 161

Represent the weight of the 8th plant with E

When the 8th plant is added;

The sum of the weight becomes 161 + E

And the number of plants becomes 8

The average is calculated as thus

$Average = \frac{Sum-of-weights}{Number-of-Plants}$

$25 = \frac{161 + E}{8}$

Multiply both sides by 8

$8 * 25 = \frac{161 + E}{8} * 8$

$200 = 161 + E$

Subtract 161 from both sides

$200 -161 = 161 - 161 + E$

$39 = E$

Reorder

$E = 39$

Hence, the weight of the 8th plant is 39lb

6 0

3 years ago

X + 15 > 20<br> Pls show steps

shtirl [24]

Answer:

X = 5

Step-by-step explanation:

You always do the inverse (opposite). 20 - 15 = 5, therefore the variable 'X' = 5. Also, if you add '6' to 'X', then it shall be ONE greater than 20.

4 0

3 years ago

Read 2 more answers

What do i do first my first step to do

kirza4 [7]

You need to find an area of one rectangular wooden plank 8*3,
and then top and the bottom area is 2*8*3
and total area is 12*2*8*3

8 0

4 years ago

The radius of a cylindrical gift box is (3x+4) inches. The height of the gift box is three times the radius. What is the surface

liq [111]

The required equation of the surface area of the cylinder is $(60\pi x^2+192\pi x+128\pi)$

<u>Solution:</u>

Let "r" be the radius of cylinder and "h" be the height.

Formula for surface area is:

$S= 2r^2\pi + 2r\pi h$

where $2r^2\pi$ is surface of two bases of cylinder and $2r\pi h$ is surface of mantle.

From the given, the height of the gift box is three times the radius, i.e $h=3r=3\times(3x+4)\rightarrow h=9x+12$

On substituting the given values in the formula we get,

$S = 2\times\pi[(3x+4)^2 + (9x+12)\times(3x+4)]$

$\Rightarrow S=2\pi[(3x^2)+2\times3x\times4+4^2]+[(9x\times3x)+12\times3x+36x+48]$

$\Rightarrow S=2\pi[9x^2+24x+16]+[21x^2+36x+36x+48]$

$\Rightarrow S=2\pi[9x^2+24x+16+21x^2+72x+48]\rightarrow2\pi[30x^2+96x+64]$

On multiplying $2\pi$ inside the brackets we get,

$\Rightarrow S=[60\pi x^2+192\pi x+128\pi]$

Hence, the required equation is $(60\pi x^2+192\pi x+128\pi)$

5 0

3 years ago