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marusya05 [52]
3 years ago
14

PLZ HURRY IT'S URGENT!!!

Mathematics
2 answers:
Eva8 [605]3 years ago
4 0

Answer:

Parallelogram

Step-by-step explanation:

graphing them makes two sets of parallel lines

Marianna [84]3 years ago
4 0

Answer: A.parallelogram

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Help please<br>1)-2<br>2)2<br>3)-1<br>4)1​
fomenos
The slope would be -2 because the graph is going down and from the y-intercept (0-2), it is going 2 units down and 1 unit right.
3 0
3 years ago
Analyze the diagram below and answer the question that follows
laiz [17]

Answer:

C. 40.2°

Step-by-step explanation:

Cosine rule (real handy to remember): c² = a² + b² - 2·a·b·cos(γ)

If you don't know this yet, look it up but in short: c, a and b are the lengths of the sides of the triangle, the angle opposite side a is called α, for b it is β and for c it is γ. That's the convention I've always used anyway, you can call them whatever of course. Anyhow:

c² = a² + b² - 2·a·b·cos(γ)

⇒ |AC|² = |AB|²+|BC|²-2·|AB|·|BC|·cos(∠B)

⇒ |AC|²-|AB|²-|BC|² = -2·|AB|·|BC|·cos(∠B)

⇒ ( |AC|²-|AB|²-|BC|² ) / ( -2·|AB|·|BC| ) = cos(∠B)

⇒ ∠B = arccos( ( |AC|²-|AB|²-|BC|² ) / ( -2·|AB|·|BC| ) )

         = arccos( ( 11²-16²-16² ) / ( -2·16·16 ) )

         = 40.21101958°

         ≈ 40.2°

6 0
2 years ago
Nancy bought 3.5 gallons of gasoline. she paid 10.43. What was the price per gallon for the gasoline
schepotkina [342]

Answer:

Nancy paid 2.98 per gallon of gasoline.

Step-by-step explanation:

The price of the gasoline is given by the total amount she paid for the gasoline divided by the amount of gasoline acquired with that money. The calculations for this are shown below:

ratio = total money / total gasoline

ratio = 10.43 / 3.5

ratio = 2.98 money / gallon

Nancy paid 2.98 per gallon of gasoline.

3 0
4 years ago
a baseball diamond is square with side 90 ft. A batter hits the ball and runs toward first base with a speed of 24ft / s. at wha
julia-pushkina [17]

When I see "at what rate", I know this question must come from
pre-Calculus, so I won't feel bad using a little Calculus to solve it.

-- The runner, first-base, and second-base form a right triangle.
    The right angle is at first-base.

-- One leg of the triangle is the line from first- to second-base.
   It's 90-ft long, and it doesn't change.

-- The other leg of the triangle is the line from the runner to first-base.
    Its length is  90-24T.  ('T' is the seconds since the runner left home plate.)

-- The hypotenuse of the right triangle is

         square root of [ 90² + (90-24T)² ] =

         square root of [ 8100 + 8100 - 4320T + 576 T² ] =

         square root of [ 576 T² - 4320 T + 16,200 ]

We want to know how fast this distance is changing
when the runner is half-way to first base.

Before we figure out when that will be, we know that since
the question is asking about how fast this quantity is changing,
sooner or later we're going to need its derivative.  Let's bite the
bullet and do that now, so we won't have to worry about it.    

       Derivative of  [ 576 T² - 4320 T + 16,200 ] ^ 1/2 =

 (1/2) [ 576 T² - 4320 T + 16,200 ] ^ -1/2 times (576T - 4320) .

There it is.  Ugly but manageable.

How fast is this quantity changing when the runner is halfway to first-base ?
Well, we need to know when that is ... how many seconds after he leaves
the plate.

Total time it takes him to reach first-base = (90 ft)/(24 ft/sec) = 3.75 sec .
He's halfway there when   T = (3.75 / 2) = 1.875 seconds.  (Seems fast.)

Now all we have to do is plug in 1.875 wherever we see 'T' in the big derivative,
and we'll know the rate at which that hypotenuse is changing at that time.
Here goes.  Take a deep breath:

(1/2) [ 576 T² - 4320 T + 16,200 ] ^ -1/2 times (576T - 4320)  = 

[ 576 T² - 4320 T + 16,200 ] ^ -1/2 times (1152T - 8640)  = 

[576(1.875)² - 4320(1.875) + 16,200]^-1/2 times [1152(1.875)-8640] =

[    2,025      -  8,100  +  16,200 ] ^ -1/2  times   [ 2,160 - 8640 ]  = 

- 6480 / √10,125  =   - 64.4 ft/sec. 


I have a strong hunch that this answer is absurd, but I'm not going to waste
any more time on it, (especially not for 5 points, if you'll forgive me). 
I've outlined a method of analysis and an approach to the solution, and
I believe both of them are reasonable.  I'm sure you can take it from there,
and I hope you have better luck with your arithmetic than I've had with mine. 

4 0
3 years ago
What is the slope of the line 7x-9=y
andriy [413]
The slope is always the number next to the x. In this case it's 7 or 7/1
5 0
3 years ago
Read 2 more answers
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