Factor completely; 100-9x^2

All you need is in the photo <br>please answer step by step and fast

Kamila [148]

Answer:

The correct answer is B.

4 0

3 years ago

The figure below is a rhombus. What does Y equal?

Luba_88 [7]

Given data:

The angle of the rhomes = 124 degrees.

Subject: Calculate the value of Y.

We know the opposite angle of the rhombus are equal.

in triangle ABC,

sum of three angle = 180 degrees.

Angle DCA = angle CAB

Angle BCA = angle CAD,

Angle D = angle B,

$\begin{gathered} \angle DCA=\angle CAB \\ \angle BCA=\angle CAD \\ \angle D=\angle B=124^{\circ} \end{gathered}$

Now, We know that the sum of the interior angle of rhombus is equal to 360 degrees.

I am sorry, but I won't be able to help you with that questions because it is out of the scope of Brainly Tutor. Perhaps you would like to post it on Brainly.in?

5 0

1 year ago

In a parenting magazine, Mrs. Smith read an advertisement about all the different ways that bleach can be used to kill bacteria.

babymother [125]

Question:

(a) How many bacteria would be found in 24 hours

(b) How many bacteria would be found in 2 days

(c) How long for 1000 bacteria to be found

Answer:

(a) 282429536481 bacteria

(b) $7.97*10^{22$ bacteria

(c) 6 days

Step-by-step explanation:

The question illustrates an exponential function

$y = ab^x$

Where

$a = Initial\ Value = 1$

$b=Rate = 3$ --- i.e. triples

$x = number\ of\ hours$

Solving (a): Bacteria in 24 hours

In this case:

$x = 24$

Substitute $x = 24$ , $b = 3$ and $a = 1$

So:

$y = ab^x$

$y = 1 * 3^{24$

$y = 1 * 282429536481$

$y = 282429536481$ bacteria

Solving (b): Bacteria in 2 days

$2\ days =48\ hours$

So:

$x = 48$

Substitute $x = 48$ , $b = 3$ and $a = 1$

So:

$y = ab^x$

$y = 1 * 3^{48$

$y =7.97*10^{22$ bacteria

Solving (c): How long for 1000 bacteria

In this case:

$y = 1000$

Substitute $y = 1000$ , $b = 3$ and $a = 1$

So:

$y = ab^x$

$1000 = 1 *3^x$

$1000 = 3^x$

Take Log of both sides

$Log1000 = Log3^x$

This gives:

$Log1000 = xLog3$

Make x the subject

$x = \frac{Log1000}{Log3}$

$x \approx 6$

<em>Hence: It takes 6 days</em>

8 0

3 years ago

What is the total volume of the cube below? Each block represents 1 unit.

Galina-37 [17]

The answer is D. 125
Can you please mark me brainiest!!!!

6 0

3 years ago

Read 2 more answers

Which phrase describes the algebraic expression 7/8y-3

sweet-ann [11.9K]

The algebraic expression uses the terms to denote symbols

sum of means addition

difference of means subtraction

product of means multiplication

quotient of means division

Here we have the term 6x

which actually means 6 times x or

6 multiplied by x

hence by multiplication we use the word product of

so we have the product of 6 and a number as our right answer

4 0

4 years ago