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Ber [7]
3 years ago
8

Which of these numbers is a common factor of 18 and 42

Mathematics
2 answers:
jek_recluse [69]3 years ago
6 0
Please give more details on the choices. I will be glad to answer your question.
Gekata [30.6K]3 years ago
3 0
The common factor of 18 and 42 is six
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Select all the correct answers. Which expressions are equal to 10^5?
Vlada [557]

Answer:

b, d, and E

Step-by-step explanation:

when you multiplicate all, is the same results

7 0
3 years ago
5. During the election for class president,
Alex Ar [27]

60 more students voted for Kevin

Step-by-step explanation:

Given

total students = 300

Voted for Jennifer = 40%

Voted for Kevin = 60%

We will find number of students for one of them and then will subtract from total to find the others.

So,

Students who voted for Jennifer:

= 40\%\ of\ 300\\=0.40*300\\=120\ students

Students who voted for Kevin

==Total\ students-Students\ who\ voted\ for\ Jennifer\\=300-120\\=180\ students

In order to calculate that how many more students voted for Kevin :

180-120 = 60

Hence,

60 more students voted for Kevin

Keywords: Percentage

Learn more about percentage at:

  • brainly.com/question/11007026
  • brainly.com/question/11207748

#LearnwithBrainly

4 0
3 years ago
Find the zeros of polynomial function.<br> f(x)=x^2-x-90
Fofino [41]

First step is to factor. With a polynomial function in the form ax² + bx + c = f(x), we have to find what factors of term C have a sum of term B.

So with this, we need factors of -90 add up to become -1. Your factors are - 10 and 9.

f(x) = x² + 9x - 10x - 90

Now we group together and pull out GCFs.

f(x) = (x² + 9x) + (10x - 90)

f(x) = x(x² + 9) - 10(x + 9)

f(x) = (x - 10)(x + 9)

Now, set each factor equal to zero.

x - 10 = 0, x + 9 = 0

For the first equation you are going to add 10 to both sides to get x by itself. Subtract 9 from both sides in the second equation for the same reason.

x = 10, x = -9

Your zeros are at x = -9, 10 or at the ordered pairs (-9, 0) and (10, 0).

7 0
3 years ago
7^3 times 7^-7 times 7
dusya [7]

Hello there! :)

<u><em>Answer:\frac{1}{343}</em></u>

<u><em>*The answer must have a fraction.*</em></u>

Step-by-step explanation:

Lesson: Zero and Negative Exponents.

Distributive property: a(b+c)=ab+ac

First, you apply exponent rule.

a^b*a^c=a^b^+^c

7^-^3

\frac{1}{7^3}=7^3=7*7*7=343

Final answer: \frac{1}{343}

Hope this helps!

Thanks!

-Charlie

Have a great day!

:)

:D

4 0
3 years ago
How do you write 0.0810 in scientific notation?
tester [92]

Answer:

8.1 * 10^-2

Step-by-step explanation:

Scientific notation is a number with it's largest digit in the one's place and its succeeding digits following it as decimals, then multiplied by a power of ten.

Appling this knowledge to the given number, we can conclude:

0.0810

= 0.081

= 8.1 * (1/10) * (1/10)

=  8.1 * 10^-1 * 10^-1

=9.1 * 10^-2

7 0
3 years ago
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