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tankabanditka [31]

2 years ago

6

Round 77,064 to the nearest thousand

1 answer:

cluponka [151]2 years ago

3 0

The answer to your question is :78,064

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A store owner buys cell phones for $40 and marks up the price by 20%. Explained how to find the price at which she sells the cel

Gala2k [10]

Well depending on how you look at you could do $40 plus that extra 20% and since you said that means to add you would do the same price. as the actual price before you add that thirty 20% so you would add 40 plus 40 equals 80. If you did 25% the you would add 40 and 40 which is 80 and that's 20%out of 25% and add 5 to 80 and you get $85.

5 0

3 years ago

Help please and thanks! I'll award brainliest if you show your work as well :)

iren2701 [21]

Answer:

6 inches

Step-by-step explanation:

Formula for surface area of a cylinder:

$SA=2\pi r^{2} +2\pi rh$

Plug in values and solve for the radius:

$180\pi =2\pi r^{2} +2\pi r(9)\\$

Divide both sides by $2\pi$

$90=r^{2} +r(9)$

Subtract 90 from both sides

$0=r^{2} +9r-90$

Use the quadratic equation to find the roots

$x=(-b$ ± $\sqrt{b^2-4ac})*\frac{1}{2a}$ (sorry for formatting, Brainly doesn't

allow equations with ± in them)

$x=\frac{-9+\sqrt{9^2-4*1*90} }{2(1)}$ and $x=\frac{-9-\sqrt{9^2-4*1*90} }{2(1)}$

$x=\frac{(-9+\sqrt{81+360})}{2}$ and $x=\frac{(-9-\sqrt{81+360})}{2}$

$x=\frac{(-9+\sqrt{441})}{2}$ and $x=\frac{(-9-\sqrt{441})}{2}$

$x=\frac{(-9+21)}{2}$ and $x=\frac{(-9-21)}{2}$

$x=\frac{12}{2}$ and $x=\frac{-30}{2}$

$x=6$ and $x=-15$

We can't have a negative radius, so that leaves us with r=6 in.

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2 years ago

2 4/5 x 3 1/8 proper fraction show work

erastovalidia [21]

Answer:

answer is 8 3/4

the formula is in the picture

hope this picture helps

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2 years ago

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What is 7x-6=9x+6? PLEASE HELP ME!!!!!!!!!!!!!

vovangra [49]

Answer:

x=-6

Step-by-step explanation:

7x-9x=6+6

-2x=12

x=-6

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2 years ago

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A random selection of plants receiving two different types of treatments is measured for growth. The growth of the plants in eac

LenaWriter [7]

Plant with treatment A in general grow more than plants with treatment B.

Picture below.

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2 years ago

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