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Firdavs [7]
3 years ago
12

1. How many two-digit numbers can be

Mathematics
1 answer:
sleet_krkn [62]3 years ago
3 0
16 because there are 4 numbers and if u include the number twice it would be 4x4 or 16 possible numbers


Brainliest?
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Please help meee and show all steps please!!!ty
kolbaska11 [484]

Answer:

x = -4 and x = 5

Step-by-step explanation:

Since x^2 + 2x and 3x + 20 both equal to y, we know that the expressions equal to each other. We can write a new equation base on that.

x^2 + 2x = 3x + 20

Now we solve the equation.

x^2 + 2x = 3x + 20

x^2 - x = 20

x^2 - x - 20 = 0

(x + 4) (x - 5) = 0

x + 4 = 0 ; x -5 = 0

x = -4 ; x = 5

3 0
3 years ago
Find the volume of the sphere. Either enter an exact answer in terms N(Pi) Or ya 3.14 for N(pi)
xz_007 [3.2K]

Full Question:

Find the volume of the sphere. Either enter an exact answer in terms of π or use 3.14 for π and round your final answer to the nearest hundredth. with a radius of 10 cm

Answer:

The volume of the sphere is ⅓(4,000π) cm³ or 4186.67cm³

Step-by-step explanation:

Given

Solid Shape: Sphere

Radius = 10 cm

Required

Find the volume of the sphere

To calculate the volume of a sphere, the following formula is used.

V = ⅓(4πr³)

Where V represents the volume and r represents the radius of the sphere.

Given that r = 10cm,.all we need to do is substitute the value of r in the above formula.

V = ⅓(4πr³) becomes

V = ⅓(4π * 10³)

V = ⅓(4π * 10 * 10 * 10)

V = ⅓(4π * 1,000)

V = ⅓(4,000π)

The above is the value of volume of the sphere in terms of π.

Solving further to get the exact value of volume.

We have to substitute 3.14 for π.

This gives us

V = ⅓(4,000 * 3.14)

V = ⅓(12,560)

V = 4186.666667

V = 4186.67 ---- Approximated

Hence, the volume of the sphere is ⅓(4,000π) cm³ or 4186.67cm³

4 0
4 years ago
Find the value for f(x) = 22
Varvara68 [4.7K]

Answer:

Step-by-step explanation:

Another way to solve would be to distribute first:

22 = 2(x + 6)

22 = 2x + 12

Subtract 12:

22 - 12 = 2x - 12

10 = 2x

Divide by 2:

10 / 2 = 2x / 2

5 = x

3 0
3 years ago
Read 2 more answers
Need help with this math problem
Dmitrij [34]

Answer:

So the value of u is 24 degree.

Step-by-step explanation:

Given;

Three angle 2u , (u+18) degree and 90 degree in a Triangle.

We know;

Addition of three angle in a triangle is equal 180 degree

2u+u+18+90=180

3u=180-90-18

3u=72

u=\frac{72}{3}

u=24

∴ The value of u is [tex]24[\tex] degree.

3 0
3 years ago
Marissa bought 3 chocolate bars each week. How many chocolate bars will Marissa buy after 3 weeks?
kupik [55]
All you have to do is multiply 3 by 3, and your answer would be 9.
3 0
2 years ago
Read 2 more answers
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