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3 years ago

The number 18 is which % of 15

Mathematics

1 answer:

Anuta_ua [19.1K]3 years ago

3 0

It would be: 18/15 * 100 = 1800/15 = 120%

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Bryan needs to finish a book for

Galina-37 [17]

Answer:

22.5 pages per week

Step-by-step explanation:

Considering that After 2 weeks, he has read

45 pages, and after 6 weeks, he has

read 135 pages

Difference in weeks = 6-2=4 weeks

Difference in pages=135-45=90

Rate per week will be 90÷4=22½ pages per week

To prove this

If 1 week is 22½

2 weeks will be 2*22½=45

6 weeks will be 6*22½=135

Therefore, the reading rate is 22.5 or 22½ pages per week

4 0

3 years ago

Which statement describes the effect on the parabola y = x2 - 1 when it is changed to y = x2 +6?

zlopas [31]

Initial:

$y=x^2-1$

Changed to:

$y=x^2+6$

As you can see the change is: from -1 to +6.

In a equation as follow:

$y=x^2+k$

The k is a transformation that moves up or down the graph of the function. If k is changed to a less value the graph moves down, If k is changed to a greather number the graph moves up.

In this case the graph moves up

To find the number of units the graph moves find the difference betwwen values of k:

$6-(-1)=7$

Then, the parabola y=x²-1 is moved 7 units up when it is changed to y=x²+6

4 0

1 year ago

One zero of the polynomial function f(x) = x3 − 9x2 + 20x is x = 0. What are the zeros of the polynomial function? 0, −5, −4 0,

jeyben [28]

Answer:

Step-by-step explanation:

As x = 0 is a zero, (x + 0) is a factor.

Dividing the equation by (x + 0) leaves x² - 9x + 20.

Factoring this polynomial

x² - 9x + 20 = (x - 4)(x - 5)

x - 4 = 0

x = 4

x - 5 = 0

x = 5

The zeros are at 0, 4, and 5.

Which can be verified by using a plotting calculator.

3 0

2 years ago

Read 2 more answers

The log of x cubed times y squared simplified

tresset_1 [31]

Answer:

$log(x^{3}y^{2}) = 3 log x+2 log y$

Step-by-step explanation:

Step 1:-

using logarithmic formula $log(ab)=log a+log b$

so given $log(x^{3} y^{2} ) = log (x^{3} )+log(y^{2} )$

now simplify

= $3 log x+2 log y$

<u>Answer:</u>-

$log(x^{3}y^{2})= [tex]3 log x+2 log y$

4 0

3 years ago

Answer asap pls no wrong answers pls

Vlad1618 [11]

Answer:

(-1.1)

Step-by-step explanation:

i dont if is right just tring yo help

6 0

3 years ago