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3 years ago

Which of the following polygons has five lines of symmetry?

Mathematics

2 answers:

Natali [406]3 years ago

7 0

PENTAGON!! PENTA=5 HEPTA=7 TRI=3

Ronch [10]3 years ago

3 0

Answer:

pentagon have 5 sides, 5 symmetry lines.

So your answer is Option C.

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The discriminant of a quadratic equation is 40. What is the nature of solutions?

RSB [31]

Answer:

It means that the roots of the quadratic equation are real and distinct

Step-by-step explanation:

Here, given the discriminant of the quadratic equation, we want to find out the nature of the solutions.

Mathematically, we can use to determine the nature of the discriminant.

By it’s formula;

D = b^2 - 4ac

We can see that the given discriminant 40 is a positive value. What this means is that the quadratic equation has roots which are real and are distinct

4 0

4 years ago

What is 10 to the power of 10

Luba_88 [7]

10 billion=10000000000, hope it helps!!! :)

5 0

3 years ago

Read 2 more answers

john has us and foreign stamps in his album. the ratio of the numer of us stamps to foreign stamps is 5:2. after paul gives him

VLD [36.1K]

Answer:

The number of U.S stamp he has is 120.

Step-by-step explanation:

John has us and foreign stamps in his album. the ratio of the number of U.S stamps to foreign stamps is 5:2.

After Paul gives him 12 foreign stamps the ratio becomes 2:1.

Now, to find the number of U.S stamps.

Let the U.S stamps be $x.$

And the foreign stamps be $y.$

Now, to solve by using cross multiplication method:

So, the ratio is:

$\frac{x}{y} =\frac{5}{2}$

By cross multiplying we get:

$2x=5y$

Dividing both sides by 2 we get:

$x=\frac{5y}{2}$ ......(1)

Now, after Paul gives him 12 foreign stamps the ratio becomes:

$\frac{x}{12+y} =\frac{2}{1}$

By cross multiplying we get:

$x=24+2y$

Putting the value of $x$ as we get in above equation (1):

$\frac{5y}{2} =24+2y$

Multiplying both sides by 2 we get:

$5y=48+4y$

Subtracting both sides by 4y we get:

$y=48.$

The number of foreign stamps = 48.

Now, to get the number of U.S stamps by putting the value of $y$ in equation (1):

$x=\frac{5\times 48}{2}$

$x=\frac{240}{2}$

$x=120.$

Therefore, the number of U.S stamp he has is 120.

7 0

4 years ago

4. What is the product of (3x - 1)(x + 4)? HELP PLEASE RIGHT NOT SHOW YOURE WORK!!!!!

LUCKY_DIMON [66]

$3 {x}^{2} + 11x - 4$

$\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\orange{:}}}}}$

$(3x - 1)(x + 4) \\ \\ = 3x(x + 4) - 1(x + 4) \\ \\ = 3 {x}^{2} + 12x - x - 4 \\ \\ = 3 {x}^{2} + 11x - 4$

$\bold{ \green{ \star{ \orange{Mystique35}}}}⋆$

4 0

3 years ago

What is the radius of the circle given the equation x2 - 6x + y2 + 10y - 2 = 0

patriot [66]

The radius would be 5. Hope this was helpful! thank you for your time!

8 0

3 years ago