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3 years ago

These questions are dark but if you zoom in its possible to see

Mathematics

1 answer:

Svetlanka [38]3 years ago

5 0

23. To complete the square you divide the x term by 2 and square it

(6/2)^2 = 9 so we have

(X+3)^2 = 2

then square root both side and get x by itself

x = √2 + 3

x = 4.41 , 1.585

24. x^2 - 4x = 1

Factor

X(x - 4) = 1

x = 4.23 and -.24

25. x^2 +3x = 4

factor

x(x + 3) = 4

solve

x = -4 or 1

26. X^2 +5x = 10

Factor

x(x +5) = 10

solve

x = 1.53 and -6.53

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Estimate the sum to the nearest whole number. Then perform the

Burka [1]

Answer:

=100

Step-by-step explanation:

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3 years ago

6x - 9= y y= -3x using the system of linear equation by substitution Help please! This is due really soon

solniwko [45]

Answer:

x = 1 and Y = -3

Step-by-step explanation:

Rewrite equations:

y=−3x;6x−9=y

Step: Solvey=−3xfor y:

y=−3x

Step: Substitute−3xforyin6x−9=y:

6x−9=y

6x−9=−3x

6x−9+3x=−3x+3x(Add 3x to both sides)

9x−9=0

9x−9+9=0+9(Add 9 to both sides)

9x=9

(Divide both sides by 9)

x=1

Step: Substitute1forxiny=−3x:

y=−3x

y=(−3)(1)

y=−3(Simplify both sides of the equation)

Answer:

x=1 and y=−3

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3 years ago

Find the area of the triangle. please explain/show your work. thank you <3

bonufazy [111]

BC = a
AC = b
ACB = C

To find the area of such triangle we are going to use the formula;

1/2 * a * b * sine C

Substitute values.

1/2 * 4 * 4 * sine 45
= 5.65^2

Therefore the area of the triangle is 5.65^2

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3 years ago

What is 32,020.20 rounded to the nearest tenth?

Sunny_sXe [5.5K]

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3 0

3 years ago

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Hello, 30 POINTS + BRAINLIEST If correct and has a long explanation. I looked at the same thing in other places but I think thos

ludmilkaskok [199]

Answer:

Step-by-step explanation:

We have a table listing the number of minutes Trayvon practiced the Backstroke and Butterfly on Monday, Wednesday, and Friday.

We want to find event that Trayvon spent more time practicing.

To do so, we add up all the minutes of one event and compare this to the total minutes of the other event.

Therefore, we can eliminate options C and D. These two options evaluate the time on Wednesday compared to other days, but we want to do is to find which event did Trayvon spend the longest on.

So, let's add up all the minutes spent doing the Backstroke. Trayvon over the course of the three days spent 12.5 mins, 15.67 mins, and 9.32 mins.

Therefore, the total minutes Trayvon spend practicing the Backstroke is:

$12.5+15.67+9.32=37.49\text{ mins}$

Now, let's add up all the minutes spent doing the Butterfly. Trayvon spent 14.333 mins, 12.1 mins, and 10.78 mins over the course of three days. So, the total time spent doing the Butterfly is:

$14.333+12.1+10.78=37.213\text{ mins}$

Trayvon spent a total of 37.49 minutes doing the Backstroke and 37.213 minutes doing the Butterfly.

37.49 is greater than 37.213. So, Trayvon spent more time practicing the Backstroke.

So, our correct answer is A.

There are some number and calculation errors in B.

And we're done!

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3 years ago

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