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3 years ago

Decrease 28 by 7% immmmmmmmmm soooooooo stuck

Mathematics

1 answer:

iris [78.8K]3 years ago

3 0

First, multiply 28 x 7/100
then subtract the product from 28
therefore:
28 - (7/100 x 28)

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A child has toy blocks that contain the numbers 1 through 80. What is the probability that the will pick up a number that is

Tju [1.3M]

Answer:

73/80

Step-by-step explanation:

multiples of 11 between 1 and 80 are 11,22,33,44,55,66,77

number of terms=7

P(multiple of 11)=7/80

P(not a multiple of 11)=1-7/80=73/80

5 0

3 years ago

Factor f(x) = 15x^3 - 15x^2 - 90x completely and determine the exact value(s) of the zero(s) and enter them as a comma separated

Illusion [34]

Answer:

$x=-2,0,3$

Step-by-step explanation:

We have been given a function $f(x)=15x^3-15x^2-90x$ . We are asked to find the zeros of our given function.

To find the zeros of our given function, we will equate our given function by 0 as shown below:

$15x^3-15x^2-90x=0$

Now, we will factor our equation. We can see that all terms of our equation a common factor that is $15x$ .

Upon factoring out $15x$ , we will get:

$15x(x^2-x-6)=0$

Now, we will split the middle term of our equation into parts, whose sum is $-1$ and whose product is $-6$ . We know such two numbers are $-3\text{ and }2$ .

$15x(x^2-3x+2x-6)=0$

$15x((x^2-3x)+(2x-6))=0$

$15x(x(x-3)+2(x-3))=0$

$15x(x-3)(x+2)=0$

Now, we will use zero product property to find the zeros of our given function.

$15x=0\text{ (or) }(x-3)=0\text{ (or) }(x+2)=0$

$15x=0\text{ (or) }x-3=0\text{ (or) }x+2=0$

$\frac{15x}{15}=\frac{0}{15}\text{ (or) }x-3=0\text{ (or) }x+2=0$

$x=0\text{ (or) }x=3\text{ (or) }x=-2$

Therefore, the zeros of our given function are $x=-2,0,3$ .

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4 years ago

Enter the amplitude of the function f(x).<br><br> f(x)=−sin(3x)−1

77julia77 [94]

Enter the amplitude of the function f(x). f(x)=-2sin(3x)-1 . 2. See answers. Log in to add comment. Answer. Answer. 5.0/5. 5.0/5.

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3 years ago

What number is between 3/4 and 6/5

Sladkaya [172]

Answer:

19.5/20

Step-by-step explanation:

3/4=15/20

6/5=24/20

--|-----|-----|----|-----|-----|------|----|-----|----|-----------

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3 years ago

Which of the following transformations does not preserve distance and angle measures?

Sveta_85 [38]

D) horizontal stretch

hope it helps

6 0

4 years ago

Read 2 more answers