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4 years ago

Please help me anyone please

Mathematics

2 answers:

Alja [10]4 years ago

7 0

Answer:

Step-by-step explanation:

12 x 8 = 96

96 - 75% = 24

96 - 24 = 72

72 square inches will have grey paint

Oof, I made a mistake on my previous answer. My tablet is acting weird

erastova [34]4 years ago

5 0

Answer:

54 ft. squared.

Step-by-step explanation:

So first (my method is), find 3/4 of 8 which is 6. (8/1 * 3/4)

Then, find 3/4 of 12, which is 9. (12/1 * 3/4)

Now to find the area, the method is l * w

Length is 6, width is 9.

6 * 9 = 54 ft. squared.

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Find the equation of the line that is perpendicular to the given line and passes through the given point. Enter your answer in s

brilliants [131]

Step-by-step explanation:

so this is the answer for the problem for you

7 0

3 years ago

A ball is thrown into the air by a baby alien on a planet in the system of Alpha Centauri with a velocity of 29 ft/s. Its height

Ilia_Sergeevich [38]

Answer:

$\overline{v}_{@\Delta t=0.01s}=-15.22ft/s, \overline{v}_{@\Delta t=0.005s}=-15.11ft/s, \overline{v}_{@\Delta t=0.002s}=-15.044ft/s, \overline{v}_{@\Delta t=0.001s}=-15.022ft/s$

Step-by-step explanation:

Now, in order to solve this problem, we need to use the average velocity formula:

$\overline{v}=\frac{y_{f}-y_{0}}{t_{f}-t_{0}}$

From this point on, you have two possibilities, either you find each individual $y_{f}, y_{0}, t_{f}, t_{0}$ and input them into the formula, or you find a formula you can use to directly input the change of times. I'll take the second approach.

We know that:

$t_{f}-t_{0}=\Delta t$

and we also know that:

$t_{f}=t_{0}+\Delta t$

in order to find the final position, we can substitute this final time into the function, so we get:

$y_{f}=29(t_{0}+\Delta t)-22(t_{0}+\Delta t)^{2}$

so we can rewrite our formula as:

$\overline{v}=\frac{29(t_{0}+\Delta t)-22(t_{0}+\Delta t)^{2}-y_{0}}{\Delta t}$

$y_{0}$ will always be the same, so we can start by calculating that, we take the provided function ans evaluate it for t=1s, so we get:

$y_{0}=29t-22t^{2}$

$y_{0}=29(1)-22(1)^{2}$

$y_{0}=7ft$

we can substitute it into our average velocity equation:

$\overline{v}=\frac{29(t_{0}+\Delta t)-22(t_{0}+\Delta t)^{2}-7}{\Delta t}$

and we also know that the initil time will always be 1, so we can substitute it as well.

$\overline{v}=\frac{29(1+\Delta t)-22(1+\Delta t)^{2}-7}{\Delta t}$

so we can now simplify our formula by expanding the numerator:

$\overline{v}=\frac{29+29\Delta t-22(1+2\Delta t+\Delta t^{2})-7}{\Delta t}$

$\overline{v}=\frac{29+29\Delta t-22-44\Delta t-22\Delta t^{2}-7}{\Delta t}$

we can now simplify this to:

$\overline{v}=\frac{-15\Delta t-22\Delta t^{2}}{\Delta t}$

Now we can factor Δt to get:

$\overline{v}=\frac{\Delta t(-15-22\Delta t)}{\Delta t}$

and simplify

$\overline{v}=-15-22\Delta t$

Which is the equation that will represent the average speed of the ball. So now we can substitute each period into our equation so we get:

$\overline{v}_{@\Delta t=0.01s}=-15-22(0.01)=-15.22ft/s$

$\overline{v}_{@\Delta t=0.005s}=-15-22(0.005)=-15.11ft/s$

$\overline{v}_{@\Delta t=0.002s}=-15-22(0.002)=-15.044ft/s$

$\overline{v}_{@\Delta t=0.001s}=-15-22(0.001)=-15.022ft/s$

5 0

3 years ago

Will mark brainliest answer, please answer !!!

azamat

Answer:

Step-by-step explanation:

I'm pretty sure it's 6, sorry if it isn't

8 0

3 years ago

Solve for m: -8m + 4 = 52

Virty [35]

Answer:

m = -6

Step-by-step explanation:

-8m + 4 = 52

-8m = 48

-8m/-8 = 48/-8

m = -6

8 0

2 years ago

Need answers please help due today

FromTheMoon [43]

It's kind of blurry and I can't really make out the point, but by looking at the equations and the graph, the answer must be A.

Hope I didn't mess up for your sake.

6 0

3 years ago