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Stells [14]
3 years ago
8

What value of x makes this equation true? need done fast please, offering 25 points!

Mathematics
1 answer:
iris [78.8K]3 years ago
5 0

Answer:-32.5

Step-by-step explanation: move x to the other side and solve

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Does anyone understand and can help me asap?
nydimaria [60]

Answer:

see below

Step-by-step explanation:

Circumference of circle = 2πr =dπ

Area of circle =πr²

1) Circle1 d =4 in, r =2 in

Circumference of circle1 =4π in

Area of circle1 = 2²π =4π in²

2) Circle2: d =3 in, r =1.5 in

Circumference of circle2 =3π in

Area of circle2 = 1.5²π =2.25π in²

3)  Circle3:  r =1 in, d =2 in

Circumference of circle3 =2π in

Area of circle3 = 1²π =π in²

4) Circle4:  r =2 1/2 in = 2.5 in, d =5 in

Circumference of circle4 =5π in

Area of circle4 = 2.5²π = 6.25π in²

5) 2/3 of the Area of circle1 = (2/3)*4π in²= (8/3)π in²

6) 1/2  of the Area of circle2 = (1/2)*2.25π in² = (1/2)*(9/4)π in² = (9/8)π in²

7) 1/4  of the Area of circle3 = (1/4)π in²

8) 1/3  of the Area of circle4 = (1/3)* 6.25π in² =(1/3)*(25/4)π in² = (25/12)π in²

6 0
3 years ago
The total cost of five pens and eight mechanical pencils is 12.65. The cost of each mechanical pencil is 0.75 cents. Which repre
Tanya [424]

Answer:

the cost of each pen is 1.33

Step-by-step explanation:

if you multiply 0.75 by 8 you get 6 after that you subtract 6 from 12.65 which means you have 6.65 which you divide by 5 which equals 1.33  

7 0
4 years ago
Can someone please help me on this question? This question has 2 answer choices. Thank you.
grin007 [14]
Hello!

To solve this you have to find the ratio between the two cylinders

Cylinder 1 height is 30
Cylinder 2 height is 20

this is a 30:20 ratio

This can be reduced to a 3:2 ratio

Now you look for one that are also equal to 3:2

3 * 7 = 21
2 * 7 = 14

The answers are 3:2 and 21:14

Hope this helps!
4 0
3 years ago
According to the rational root theron what are all the potential roots of f(x)=9x^4-2x^2-3x+4
Viefleur [7K]

Answer:

<u>Potential roots:</u>  \frac{9}{4},\frac{9}{2},9,\frac{3}{4},\frac{3}{2},3, \frac{1}{4},\frac{1}{2},1

Step-by-step explanation:

Simply put, the rational roots theorem tells us that if there are any rational roots of a polynomial function, they must be in the form

±  \frac{FactorsOfa_{0}}{FactorsOfa_n}

Where

a_n is the number before the highest power of the polynomial, and

a_0 is the constant in the polynomial

<em>From the polynomial shown, we have a_n = 9 and a_0 = 4</em>

<em />

<em>The factors of 9 are 9, 3, 1</em>

<em>and</em>

<em>The factors of 4 are 4,2,1</em>

<em />

So, if there are any rational roots, they would be:

±  \frac{FactorsOfa_{0}}{FactorsOfa_n}

±  \frac{9,3,1}{4,2,1}

Which is  ±   9/4, 9/2, 9/1, 3/4, 3/2, 3/1, 1/4, 1/2, 1/1

or

\frac{9}{4},\frac{9}{2},9,\frac{3}{4},\frac{3}{2},3, \frac{1}{4},\frac{1}{2},1

5 0
3 years ago
Identify the domain and range of the relationship (-9,2)(-4,2)(3,2)(9,2)
finlep [7]
Domain: -9,-4, 3, 9 
range: 2
6 0
3 years ago
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