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fredd [130]
3 years ago
12

Work this out plzzzz x

Mathematics
2 answers:
Nostrana [21]3 years ago
7 0
You need to do it like this

kari74 [83]3 years ago
6 0
I think it 72 please tell me if I’m wrong
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You have 40 grams of a radioactive kind of tellurium. If it's half life is 9 hours, how much will be left after 18 hours
AlexFokin [52]

Answer:

10 grams

Step-by-step explanation:

7 0
3 years ago
In the figure, AB || CD and mZ2 = 55°.
Travka [436]

Answer:

m <2=m <8(Alternative exterior angles)

Therefore m <8=55°

4 0
2 years ago
By decreasing each dimension by 1 unit​, the area of a rectangle decreased from 40 square feet​ (on the​ left) to 28 square feet
BabaBlast [244]
Attached a pic of the solution (s).

7 0
3 years ago
A statue is mounted on top of a 16 foot hill. From the base of the hill to where you are standing is 77 feet and the statue subt
DanielleElmas [232]

Consider right triangle with vertices B - base of the hill, S - top of the statue and Y - you. In this triangle angle B is right and angle Y is 13.2°. If h is a height of the statue, then the legs YB and BS have lengths 77 ft and 16+h ft.

You have lengths of two legs and measure of one acute angle, then you can use tangent to find h:

\tan 13.2^{\circ}=\dfrac{\text{opposite leg}}{\text{adjacent leg}} =\dfrac{16+h}{77}, \\ \\ 0.2345=\dfrac{16+h}{77},\\  \\ 16+h=0.2345\cdot 77=18.0565,\\ h=18.0565-16=2.0565 ft.

Answer: the height of the statue is 2.0565 ft.

8 0
3 years ago
Read 2 more answers
What is the vertex of the graph of y = −1(x − 2)2 + 3
Alona [7]

Vertex: \ (2,3)

<h2>Explanation:</h2>

The vertex form of the equation of a parabola is given by the following form:

f(x)=a(x-h)^2+k \\ \\ Where: \\ \\ a:Leading \ Coefficient \\ \\ (h,k):Vertex \ of \ the \ parabola

In this exercise, we have the following equation:

y=-(x-2)^2+3

From here, we can conclude that:

Leading \ coefficient: \ -1 \\ \\ Vertex: \ (2,3)

Since the leading coefficient is less than zero, the parabola open downward. So, the graph is shown below and the vertex has been indicated.

<h2>Learn more:</h2>

Finding leading coefficient: brainly.com/question/1469367

#LearnWithBrainly

7 0
3 years ago
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