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3 years ago

What do you think the answer is, I really need help, please and thank you, Hurry

Mathematics

2 answers:

Scrat [10]3 years ago

3 0

I belive the answer is 15

erastova [34]3 years ago

3 0

Almost positive it's 15

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Select the correct answer. The grounds crew at a college is installing a path around a pond on campus as shown. What is the peri

olchik [2.2K]

Answer:

Step-by-step explanation:

You are combining like terms.

1.) find all of the #x³ and there is only one and that is -x³ so that limits the problem to B or D.

2.) now you find all of the #x² and there are three of them being 10x², -x², and 4x². Now that you have identified them you will add them together to get a sum of 13x²

you don't have to do anymore of the question because D does not have 13x² so it is B.

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3 years ago

Which represents the solution set of the inequality 5X-9<21

Sergeu [11.5K]

X<6 for the solution of it

3 0

3 years ago

Write the standard form of the equation of the circle with center (7,1) that also contains the point (−1,−5).

Karo-lina-s [1.5K]

Answer:

$(x-7)^2+(y-1)^2=100$

Step-by-step explanation:

1) Find the radius

We can do this by using the distance equation with the centre (7,1) and the given point (-1,-5):

$d=\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$ where the two points are $(x_1,y_1)$ and $(x_2,y_2)$

Plug in the points (7,1) and (-1,-5)

$d=\sqrt{(-1-7)^2+(-5-1)^2}\\d=\sqrt{(-8)^2+(-6)^2}\\d=\sqrt{64+36}\\d=\sqrt{100}\\d=10$

Therefore, the radius of the circle is 10 units.

2) Plug the data into the equation of a circle

Equation of a circle (when not centred at the origin):

$(x-h)^2+(y-k)^2=r^2$ where the centre is $(h,k)$ and r is the radius

Plug in the centre (7,1) as (h,k)

$(x-7)^2+(y-1)^2=r^2$

Plug in the radius 10

$(x-7)^2+(y-1)^2=10^2\\(x-7)^2+(y-1)^2=100$

I hope this helps!

4 0

3 years ago

Multiply the binomials and simplify so that they are in standard form. Show all your work.

tatuchka [14]

Answer: The answer is = 2x^2 -11x-40

Step-by-step explanation: a= 2x, b=5, c= x, d =8

= 2xx + 2x (-8) + 5x +5(-8)

+ (-a)=-a

then simplify =2xx-2 -8x+5x.8

2xx=2x^2

2.8x=16x

5.8=40

=2x - 16x + 5x- 40

8 0

4 years ago

Read 2 more answers

Write the verbal phrase as a algebraic expression twice a number divided by 7

Anettt [7]

Uhhhhhhhh I need points SORRY

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3 years ago