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kondor19780726 [428]
3 years ago
5

Use the rencetangle to find this area

Mathematics
1 answer:
Len [333]3 years ago
5 0

Answer:

The area of the triange is 20 feet. beacause the area of the rectangel is 40 feet.

Step-by-step explanation:

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HELPPPPPPP on this question.! I need to pass.
timurjin [86]

9514 1404 393

Answer:

  12.25 (or -18.75)

Step-by-step explanation:

If you pay attention to the square of a binomial, ...

  (x -a)² = x² -2ax +a²

You see that the constant (a²) is the square of half the x-coefficient. That is, the x-coefficient is -2a, half that is -a, and the square of that is (-a)² = a².

In your equation, the x-coefficient is -7, half that is -3.5, and the square of that is 3.5² = 12.25.

So, you can think of this ambiguous question in a couple of ways.

<u>Concern is only with the x-terms</u>:

  x² -7x +31 = (x² -7x +12.25) +31 = 12.25 . . . . . . add 12.25 to both sides

  (x -3.5)² +31 = 12.25 . . . . write the x-terms as a square

<u>Concern with the equation overall</u>:

You want the end result to have the x-terms in the form of the square ...

  (x -3.5)² = x -7x +12.25

The left side of the equation can be put in that form by adding -18.75 to both sides;

  x² -7x +31 -18.75 = -18.75 . . . . . . add -18.75 to both sides

  x² -7x +12.25 = -18.75 . . . . . . . . . simplify

  (x -3.5)² = -18.75 . . . . . . write the left side as a square

__

The short of it is that we're not sure what the question is asking for exactly. The "help video" would probably clarify the intent. Most likely, you're concerned with adding the square of half the x-coefficient, 12.25.

3 0
2 years ago
PLEASE IM BEGGING YOU<br> HELPPPP<br><br> does the equation go up to down? y=8x^2+7x-2
mart [117]

Answer:

Opens upward

Step-by-step explanation:

Since the coefficient of x^{2} is a positive number +8, then it is a parabola that opens upward

5 0
2 years ago
Read 2 more answers
26 beats in 1/6 minutes equals what beats per minute
Zina [86]

Answer:

156

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
***I NEED HELP ASAP*** <br> ***Please show all the steps***<br> ***I will mark brainliest***
mixer [17]

Answer:

First on is 0.75

Second is 22/52 (not sure about this one though)

Step-by-step explanation:

For the first one:

P(aUb) = p(a) + p(b) - p(a^b)

0.6 = 0.4 + 0.5 - p(a^b)

p(a^b) = 0.3

P(a/b)= p(a^b)/p(a)

P(a/b)= 0.3/0.4

P(a/b)= 0.75

For the second one:

Total of the cards are 52

Diamonds are 13 out of that 52

Face cards are 12 out of that 52

Diamond OR face cards means p(aUb)

And that equals p(a)+p(b)-p(a^b)

p(a^b) means the intersection between the two, there are three common cards between diamonds and face cards, so p(a^b)=3

13/52 + 12/52 - 3/52= 22/52

3 0
3 years ago
​Solve the systems of equations: ​ ​ ​​
Sidana [21]
(x,y)=(2,3)
This is Answer
6 0
3 years ago
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