All categories

2 years ago

10-5(9n-9) simplify the expressions

Mathematics

1 answer:

eduard2 years ago

8 0

Answer:

−45n+55

Step-by-step explanation:

10-5(9n-9)

distribute -5 into (9n-9)

10-45n+45

combine like terms

10+45=55

-45n+55

hope this helps

You might be interested in

50 points. <br> Solve the following problems.

jeyben [28]

Answer:

x=10, y=12.

Step-by-step explanation:

You are making all sides of the triangle smaller by a scale factor of 2/3, because 9*2/3=6. For x, we can do 2/3*15, which equals 10. For y, we can do 2/3*18, equalling 12.

3 0

2 years ago

Read 2 more answers

Could anyone find this?

lina2011 [118]

Answer:

Step-by-step explanation:

Since the squares have areas of 32u^2. The side lengths are

$s=\sqrt{32}\\ \\ \text{By the Pythagorean Theorem}\\ \\ x^2=s^2+s^2\\ \\ x^2=32+32\\ \\ x^2=64\\ \\ x=\sqrt{64}\\ \\ x=8$

8 0

2 years ago

Answer the question pls xx

yKpoI14uk [10]

Answer:

3 lines of symmetry

Step-by-step explanation:

the lines go through the vertices of the triangle

3 0

2 years ago

A right △ABC is inscribed in circle k(O, r). Find the radius of this circle if:

natta225 [31]

We have been given that a right △ABC is inscribed in circle k(O, r).

m∠C = 90°, AC = 18 cm, m∠B = 30°. We are asked to find the radius of the circle.

First of all, we will draw a diagram that represent the given scenario.

We can see from the attached file that AB is diameter of circle O and it a hypotenuse of triangle ABC.

We will use sine to find side AB.

$\text{sin}=\frac{\text{Opposite}}{\text{Hypotenuse}}$

$\text{sin}(30^{\circ})=\frac{AC}{AB}$

$\text{sin}(30^{\circ})=\frac{18}{AB}$

$AB=\frac{18}{\text{sin}(30^{\circ})}$

$AB=\frac{18}{0.5}$

$AB=36$

Wee know that radius is half the diameter, so radius of given circle would be half of the 36 that is $\frac{36}{2}=18$ .

Therefore, the radius of given circle would be 18 cm.

8 0

3 years ago

Solve for y. <br> 6y-1.5x=8

schepotkina [342]

I'm pretty sure y=1.3=0.25x

8 0

3 years ago