All categories

3 years ago

Photo attach please help

Mathematics

1 answer:

kaheart [24]3 years ago

7 0

Answer:

Option D: 5√5 is the correct answer.

Step-by-step explanation:

Given that:

√20 + √45

These can also be written in simplified form;

√5*4 + √5*9

We will take square root of 4 and 9.

The square root of 4 and 9 is,

√4 = 2

√9 = 3

Thus,

2√5 + 3√5

Adding the roots,

5√5

Hence,

Option D: 5√5 is the correct answer.

You might be interested in

Which graph represents the solution set for<br> -X2 + 8x - 12 > 0?

nordsb [41]

Answer:
Here is how it should be graphed.

3 0

3 years ago

Read 2 more answers

Pls look at the photo and identify the extrema pls! I only have one try left!!

dusya [7]

A C and F those would be the correct answers girlie

3 0

3 years ago

Michelle has $1,393 in a savings account. The interest rate is 9%, compounded annually.

suter [353]

A = P (1 + r)^n where P = initial amount, r = interest rate , n = number of years and A = amount after n years.

So here we have A = 1393(1 + 0.09) ^ 2 ( 0.09 = 9%)

= $1655.02 (answer)

3 0

3 years ago

Is x=3 a zero of f(x)=4x^4-x^3-52x^2-35x+12

lora16 [44]

Answer:

Step-by-step explanation:

If x = 3 is a zero, then f(3) = 0

f(3)

= 4 $(3)^{4}$ - 3³ - 52(3)² - 35(3) + 12

= 324 - 27 - 468 - 105 + 12

= - 264

Since f(3) ≠ 0 then x = 3 is not a zero of f(x)

5 0

3 years ago

The image of a parabolic lens is projected onto a graph. The image crosses the x-axis at –2 and 3. The point (–1, 2) is also on

Ierofanga [76]

Answer:

$y =-\frac{1}{2}(x +2)(x - 3)$

Step-by-step explanation:

Given

$x_1 = -2$

$x_2 = 3$

$(x,y) = (-1,2)$ --- a point on the parabola

Required

The equation

First, calculate the equation from the zeros

$y =k(x - x_1)(x - x_2)$

Substitute $x_1 = -2$ and $x_2 = 3$

$y =k(x - -2)(x - 3)$

$y =k(x +2)(x - 3)$

To solve for k, we substitute $(x,y) = (-1,2)$

$2 = k(-1+2)(-1-3)$

$2 = k(1)(-4)$

$2 = -4k$

Divide by -4

$k=\frac{2}{-4}$

$k=-\frac{1}{2}$

So, the equation is:

$y =k(x +2)(x - 3)$

$y =-\frac{1}{2}(x +2)(x - 3)$

8 0

3 years ago