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mina [271]
2 years ago
7

What is the greatest common factor of 15 and 21?​

Mathematics
2 answers:
Fudgin [204]2 years ago
6 0

Answer:

3

Step-by-step explanation:

PIT_PIT [208]2 years ago
3 0
Greatest common factor (GCF) of 15 and 21 is 3. We will now calculate the prime factors of 15 and 21, than find the greatest common factor (greatest common divisor (gcd)) of the numbers by matching the biggest common factor of 15 and 21.
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The table shows the values of different measurements in the metric system.
Lunna [17]

A micrometer has a power of 10^{-6}

A millimeter has a power of x 10^{-3}

A nanometer  has a power of 10^{-12}

A picometer  has a power of 10^{-12}

We are to write the numbers in standard form.

Standard form is a way of writing simplifying numbers and expressing numbers to a power of 10.

For example, to express 1000  in standard form, count the number of digits after the first number. There are 3 zeros. 3 would be the power of the number. So, 1000 in standard form is 1 x 10³

To express a decimal in standard form, count the numbers of zeros and the first non-zero digit  The negative of the number would be the power.

For example, 0.001 is standard form is 1 x 10^{-3}

A micrometer has 6 digits after the decimal point , it power would be x 10^{-6}

A millimeter has 3 digits after the decimal point, its power would be x 10^{-3}

A nanometer has 9 digits after the decimal point, its power would be x 10^{-12}

A picometer has 12 digits after the decimal point, its power would be x 10^{-12}

To learn more about standard form, please check: brainly.com/question/23123973?referrer=searchResults

4 0
2 years ago
Cuál es la exprecion <br>equibalente a 4x² 20x + 25 es:​
choli [55]

Answer:¿Es 4x² + 20x o 4x-20x?

Step-by-step explanation:

3 0
3 years ago
Find side x , give your answer 1 decimal place <br>​
Vladimir [108]

<u>Given</u>:

Let A denote the angle of the given triangle which measures ∠A = 81°

Let B denote the angle which measures ∠B = 40°

The length of the side a = x.

The length of the side b = 7 cm.

We need to determine the value of x.

<u>Value of x:</u>

The value of x can be determined using the law of sine formula.

Applying the law of sine, we have;

\frac{sin \ A}{a}=\frac{sin \ B}{b}

Substituting the values, we have;

\frac{sin \ 81^{\circ}}{x}=\frac{sin \ 40^{\circ}}{7}

Simplifying, we get;

\frac{0.988}{x}=\frac{0.643}{7}

Cross multiplying, we have;

0.988 \times 7=0.643 x

     6.916=0.643x

       10.8=x

Thus, the length of the side x is 10.8 cm.

4 0
3 years ago
Martha wrote an example of a quadratic function for a homework assignment. The function she wrote is shown. f(x) = 5x3 + 2x2 + 7
larisa86 [58]

<u><em>Answer:</em></u>

<u>The two correct options are:</u>

The first term, 5x³, can be eliminated

The exponent on the first term, 5x³, can be changed to 2 and then combined with the second term, 2x²

<u><em>Explanation:</em></u>

The degree of an expression is given based on the highest power in the expression

<u>The given expression is:</u>

5x³ + 2x² + 7x - 3

We can note that the highest power in the given expression is 3 which means that <u>the degree of the expression is 3</u>

<u>A quadratic function</u> is a function of <u>degree 2</u>. This means that the highest degree in the expression (function) must be 2

Accordingly, Martha should get rid of the term with power 3 (5x³) in her equation

<u>This can be done by 2 methods:</u>

1- She simply eliminates the term with the third degree

2- She changes the degree of the term with degree 3 to a lower degree and combines it with any existent like term

<u>Comparing the above with the given options, we can conclude that the two correct options are:</u>

- The first term, 5x³, can be eliminated

- The exponent on the first term, 5x³, can be changed to 2 and then combined with the second term, 2x²

Hope this helps :)

6 0
3 years ago
Read 2 more answers
Simplify.<br><br> (-7p)3<br><br> please help
OleMash [197]

Answer:

-343p^3

Step-by-step explanation:

This is the answer because -7x-7x-7 would be -343 and you MUST keep the negative sign. The p x pxp would be p^3

Multiply the numbers:

-343p^3 would be your answer

Hope this helps!! :D

8 0
3 years ago
Read 2 more answers
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