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uysha [10]
2 years ago
8

Please help with triangle question

Mathematics
2 answers:
mestny [16]2 years ago
6 0

Answer:

Area= (Base* Height)/2=(Base*12)/2=120

Base*12=120*2=240

Base=240/12

Base=20 m

Step-by-step explanation:

tankabanditka [31]2 years ago
6 0

Good morning ☕️

Answer:

<h2>20 m</h2><h2 />

Step-by-step explanation:

Consider A the area of the triangle      

                h the height      

               b the base length

_________

<em><u>rule:</u></em>

A=\frac{b*h}{2}

_________

then

b =\frac{2A}{h} = \frac{2*120}{12} =\frac{240}{12} =20

___________________________

:)

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The inches of rainfall in the rainforest is represented by the function f(x) = 3(x-2)+ 4. What is the average rate of change bet
nata0808 [166]

Answer:

The average rate of change of rainfall in the rainforest between 2nd year and 6th year = <u>3 inches</u>

Step-by-step explanation:

Given function representing inches of rainfall:

f(x)=3(x-2)+4

To find the average rate of change between the 2nd year and the 6th year.

Solution:

The average rate of change between interval [a,b] is given as :

\frac{f(b)-f(a)}{b-a}

For the given function we need to find the average rate of change between 2nd year and 6th year. [2,6]

So, we have:

f(2)=3(2-2)+4=3(0)+4=4

f(6)=3(6-2)+4=3(4)+4=12+4=16

Thus, average rate of change will be:

\frac{f(6)-f(2)}{6-2}

⇒ \frac{16-4}{6-2}

⇒ \frac{12}{4}

⇒ 3

Thus, the average rate of change of rainfall in the rainforest between 2nd year and 6th year = 3 inches

8 0
3 years ago
Give B is the midpoint of AC, what is AC?
Savatey [412]

Answer:

\fbox{27}

Step-by-step explanation:

4x+3=3x+9\\4x+3-3=3x+9-3\\4x=3x+6\\4x-3x=3x-3x+6\\x=6

Plug in the 6 to the equations. Since B is the midpoint of AC, then both should be equal once plugged in [and solved].

4(6)+3\\= 27\\3(6)+9\\= 27\\\\\fbox{27}

8 0
2 years ago
Pls help me in these two little exercises about the slope.
den301095 [7]

Answer:

3)  y=\dfrac35x+\dfrac25

4) a)  y=-2x+7

  b)  y=\dfrac12x+\dfrac92

Step-by-step explanation:

<u>Exercise 3</u>

-3x + 5y = 2

\implies 5y = 3x + 2

\implies y=\dfrac35x+\dfrac25

<u>Exercise 4</u>

a) If L2 is parallel to L1, it has the same slope (gradient) ⇒ m = -2

If L2 passes through point (3, 1):

y-y_1=m(x-x_1)

\implies y-1=-2(x-3)

\implies y=-2x+7

So L2 = L1

b) If L3 is perpendicular to L1, then the slope of L3 is the negative reciprocals of the slope of L1  ⇒  m = \dfrac12

If L3 passes through point (-5, 2):

y-y_1=m(x-x_1)

\implies y-2=\dfrac12(x+5)

\implies y=\dfrac12x+\dfrac92

4 0
2 years ago
Read 2 more answers
Graph g(x) = -3(x + 2)2 + 2. Compare the graph to the graph of f(x) = x2. Give me five points that you use to graph g(x). Then d
PolarNik [594]
The answer would be -20 because you add and subtract your numbers to get 20
4 0
2 years ago
13. Solve this equation for A: A/2=4<br> O A. 2<br> OB.4<br> C.6<br> D. 8
Galina-37 [17]

Step-by-step explanation:

A/2 = 4

A = 4 x 2

A = 8

I think this should be the answer

5 0
2 years ago
Read 2 more answers
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