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3 years ago

Expand and simplify 9(2x + 3) + 4x

Mathematics

2 answers:

aleksandr82 [10.1K]3 years ago

4 0

Answer:

22x+27

Step-by-step explanation:

Let's simplify step-by-step.

9(2x+3)+4x

Distribute:

=(9)(2x)+(9)(3)+4x

=18x+27+4x

Combine Like Terms:

=18x+27+4x

=(18x+4x)+(27)

=22x+27

Paul [167]3 years ago

4 0

Answer:

18x+27+4x

Step-by-step explanation:

9×2x=18x

9×3=27

18x+27+4x

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Brandon decided to make his own hand sanitizer. To be effective, hand sanitizer

strojnjashka [21]

Answer:

90ml

Step-by-step explanation:

all we need to do is find 60% of 150

60% of 150 is 90

6 0

3 years ago

What is the value of x in the triangle? A: 289 B: 17 C: 15 D: 14.2

Maksim231197 [3]

Should be 14.2

Because if you square root 514 you get 22.6 then you do 15x15 and you get 225 then you subtract 225-22.6 and you get 14.2

4 0

3 years ago

Solve by completing the square: x^2 + 3x - 9 = 0

tekilochka [14]

Answer:

Step-by-step explanation:

x^2 + 3x - 9 =0

By comparing with the equation ax^2+bx+c = 0,

we get,

a = 1, b=3, c = -9

we know the formula for x is,

x = (-b±√(b^2 - 4ac))/2a

x = (-3±√45)/2

x = (-3±3√5)/2

x = (-3+3√5)/2, (-3-3√5)/2

6 0

3 years ago

Read 2 more answers

If sin (7y) = cos (5y + 14), find y.

Reil [10]

Answer:

Step-by-step explanation:

sin(7y)=cos(5y+14)=sin(90-(5y+14))=sin(76-5y)

7y=76-5y

12y=76

y=76/12=19/3

sin(7y)=cos (5y+14)=sin (90+(5y+14))=sin (5y+104)

7y=5y+104

2y=104

y=52

7 0

3 years ago

A circle has an area of approximately 615 square millimeters. What is the diameter of the circle

noname [10]

Answer:

When using the given information, the diameter of the circle is going to be 28 mL.

Step-by-step explanation:

First, we need to know the formula for finding the area of a circle.

$Area=r^2\pi$

Now, we need to rearrange the formula so we can find the radius.

$Radius=\sqrt{\frac{A}{\pi} }$

Next, we plug in the given area into the equation.

$Radius=\sqrt{\frac{615}{\pi}}$

$Radius=\sqrt{196}$

$Radius=14$

Now that we have the radius, we can find the diameter. The radius is half the length of the diameter. So, in order to find the diameter, we have to multiply the radius by 2.

$14 * 2=28$

So, the diameter of the circle is 28 mL

3 0

3 years ago