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Brut [27]
3 years ago
6

The radius of a circle is (7x+3)cm. Write an expression to represent the area of the circle in simplified form

Mathematics
1 answer:
zepelin [54]3 years ago
3 0

Answer:

A = π(7x + 3)² cm²

Step-by-step explanation:

A = πr² is the appropriate equation.  If r = 7x + 3 cm, then the area of this particular circle is:

A = π(7x + 3)² cm²

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Math question plz help me
Minchanka [31]

Answer:

The required equation of the line is:

y=\frac{1}{4}x-1

Step-by-step explanation:

Given the equation

y=-4x+3

comparing the equation with the slope-intercept form

y=mx+b

Here,

  • m is the slope
  • y is the intercept

so the slope of the line is  -4.

As we know that the slope of the perpendicular line is basically the negative reciprocal of the slope of the line, so

The slope of the perpendicular line will be: 1/4

Therefore, the point-slope form of the equation of the perpendicular line that also intersects the point (8, 1) is:

y-y_1=m\left(x-x_1\right)

y-1=\frac{1}{4}\left(x-8\right)

add 1 to both sides

y-1+1=\frac{1}{4}\left(x-8\right)+1

y=\frac{1}{4}x-1

8 0
3 years ago
Lizzy had test scores of:72,94,108,60<br><br> What is the range of her test scores
mr Goodwill [35]

Answer:

range of the test scores is 48

Step-by-step explanation:

60,72,94,108

108- 60=48

4 0
3 years ago
Read 2 more answers
What is the value of n in this equation 1/2(n-4)-3=3-(2n+3)?
alexdok [17]

Answer:

n = 2

Step-by-step explanation:

Given

\frac{1}{2}(n - 4) - 3 = 3 - (2n + 3)

Multiply through by 2 to clear the fraction

n - 4 - 6 = 6 - 2(2n + 3) ← distribute

n - 10 = 6 - 4n - 6 ( add 4n to both sides )

5n - 10 = 0 ( add 10 to both sides )

5n = 10 ( divide both sides by 5 )

n = 2

6 0
3 years ago
Put these over a common denominator: ³/5 and 4/7
salantis [7]
3/5 x 7/7= 21/35
4/7x 5/5= 20/35
They both have a common denominator
4 0
3 years ago
A map has a scale of 1 cm: 5 km. Determine how far apart two cities are if they are 8 cm apart on the map.
MaRussiya [10]

Answer:

i believe the answer is 40km.

6 0
2 years ago
Read 2 more answers
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