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3 years ago

If a circle gas a diameter of 4 meters, what is the area

1 answer:

3 0

Area of a circle formula is:
A= pi x r^2
If the diameter is 4 then the radius is 2.
And the area is
2^2=4 and times pi
Which is 4 pi or 12.56.

Answer is 11.56

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Write 5 × 5 × 5 × 5 using exponents. A. 55 B. 54 C. 52 D. 45

drek231 [11]

Answer:

B: 5^4

Step-by-step explanation:

however many of the same numbers is the little exponent

3 0

3 years ago

Read 2 more answers

16 + 5x = 8x + 4<br><br>need the answer to be a whole number or decimal not a fraction etc.

Andrew [12]

Answer:

x=4

Step-by-step explanation:

You first add like terms:

16-16+5x=8x+4-16

5x=8x-12

5x-8x=8x-8x-12

-3x=12

Now you divide to isolate the variable:

-3x/-3=-12/-3

Since the denominator and numerator are both negative, the answer will be positive:

x=4

Hope that made sense!

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4 years ago

Read 2 more answers

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BaLLatris [955]

It’s 78-45 to get the new season

8 0

3 years ago

Nina knows that the average of the x-intercepts represents the line of symmetry for a quadratic function through the x-axis. Whi

Romashka [77]

Answer:

$\bf \displaystyle\frac{5+1}{2}=\displaystyle\frac{6}{2}=3$

Step-by-step explanation:

The x-intercepts are the values of x for which y=0, that is f(x)=0.

The x-intercepts of

$\bf f(x)=4x^2-24x+20$

are the values of x such that

$\bf 4x^2-24x+20=0$

Divide both sides by 4 to simplify a little

$\bf x^2-6x+5=0$

Solve the quadratic equation

$\bf x=\displaystyle\frac{-(-6)\pm\sqrt{(-6)^2-4*1*5}}{2*1}=\displaystyle\frac{6\pm\sqrt{36-20}}{2}=\\\\=\displaystyle\frac{6\pm\sqrt{16}}{2}=\displaystyle\frac{6\pm4}{2}$

and you get the 2 x-intercepts

x =10/2 and x = 2/2

x = 5 and x = 1

The average is the midpoint

$\bf \displaystyle\frac{5+1}{2}=\displaystyle\frac{6}{2}=3$

7 0

3 years ago

Read 2 more answers

Jada can bake 12 cookies in 30 minutes. A this rate, how long will it take her to bake 144 cookies?

Elodia [21]

6 hours

Working;
If 12 cookies take 30 minutes,
Then one cookie takes $\frac{30}{12}$

144 cookies would take <span> $\frac{30}{12}$ * 144
=360 minutes or 6 hours</span>

3 0

4 years ago