All categories

2 years ago

I just need help with this

Mathematics

1 answer:

Alexxx [7]2 years ago

3 0

Answer:

z = 4.5

Step-by-step explanation:

∠B = ∠B ∠BAD = 90° - ∠B = ∠C

ΔBAD ~ ΔBCA

AB / z = BD / AB

z = AB * AB / BD = 3*3 / 2 = 4.5

You might be interested in

15:45 in simplest form

mylen [45]

15:45 in simplest form is 1:3

the LCM of 15 and 45 is 15, and when you divide both by 15, you get 1:3

7 0

3 years ago

what is the rate of change for the linear relationship modeled in the table? x y −1 10 1 9 3 8 5 7 -1/2 0 1/2 2

Vesnalui [34]

Answer:

Rate of change for the linear relationship modeled is $\dfrac{-1}{2}$

Step-by-step explanation:

As the there is a linear relationship in the points, so all these points will be on a single straight line. Hence the slope will be same throughout all the points.

We know that, the slope of the line joining (x₁, y₁) and (x₂, y₂) is,

$m=\dfrac{y_2-y_1}{x_2-x_1}$

Putting the points as (-1, 10) and (1, 9), we get

$m=\dfrac{9-10}{1-(-1)}$

$=\dfrac{9-10}{1+1}$

$=\dfrac{-1}{2}$

Rate of change is the slope of the line joining all these points.

7 0

3 years ago

Read 2 more answers

Help asap please!! Find the measure of y. A. 43 B. 53 C. 90 D. 47

Amiraneli [1.4K]

Answer:

$y=43$

Step-by-step explanation:

$y=2(90-46)/2$

$y=43$

------------------------

OAmalOHopeO

-----------------------

5 0

2 years ago

What is the domain? Please hurry

german

The domain is the input (x) value. Since the equation is not provided with any input limit the answer is negative infinity to infinity.

The answer is the last choice.

6 0

3 years ago

Stella wants to buy a remote control helicopter. The one she wants costs $120.

aalyn [17]

.45 * 120 = 54

.072 * 54 = 3.888

54 + 3.888 = 57.888= $57.89

5 0

2 years ago

Read 2 more answers