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densk [106]
3 years ago
6

I need some help 3z2−6z3z2−6z for z=5

Mathematics
1 answer:
DiKsa [7]3 years ago
7 0
Um that would be -900
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Find the area of △LKJ.
nirvana33 [79]

Answer:

A=600\: u^{2}

<u>The correct answer is letter c.</u>

Step-by-step explanation:

The area equation of a triangle is given by:

A=\frac{bh}{2}  (1)

Where:

b is the base

h is the height

Let's find first the angle MJK (α), using the tangent definition.

tan(\alpha)=\frac{24}{32}

\alpha=tan^{-1}(\frac{24}{32})

\alpha=36.9^{\circ}

Now, if α = 37° then β (angle JLK) must be:

37^{\circ} + \beta + 90^{\circ}=180^{\circ}

\beta=53^{\circ}

Now, we can find the distance ML using again the tangent definition:

tan(\beta)=\frac{24}{ML}

ML=\frac{24}{tan(53)}

ML=18

The base of the triangle LKJ will be:

b=32+ML=32+18=50

Therefore, using equation (1) the area of △LKJ will be:

A=\frac{50*24}{2}

A=600\: u^{2}

The correct answer is c.

I hope it helps you!

5 0
3 years ago
A rectangle’s width is 2 meters shorter than its length, l. Its area is 168 square meters. Which equation can be used to find th
bija089 [108]

Answer:

l(l - 2) = 168

Step-by-step explanation:

Let w = width

Let l = length

Let A = area

w = l - 2

A =  l * w

also, A = 168

equating the two values of A

l * w = 168

l * (l - 2) = 168

l^2 - 2l = 168

l(l - 2) = 168

7 0
3 years ago
Read 2 more answers
The perimeter of a rectangular rug is 30 yd and its length is 9 yd.find the area of this rug
Simora [160]
<span>perimeter of a rectangular rug is 30 yd

P= L+L+W+W 
 </span><span>P= 9+9+W+W 
P= 18 + 2W 
</span><span>18 + 2W = 30    
 2W = 30-18 
</span><span>W= 12/2 = 6

A= L x W 
A= 9   x w 
</span><span>A= 9  x 6 = 45 yd square</span>
4 0
3 years ago
Help please and thank you
Blababa [14]

Answer:

<u><em>73.72 ft Squared</em></u>

Step-by-step explanation:

First you need to find the area of the rectangle the area of rectangle is 8x10=80. Then You take that 80=3.14x2. then you find the area by dividing it. so...

1.) 80=3.14x2

3.14x2=6.28       <u> 80=6.28     </u>          (Then you divide 6.28 by 80)

                             80    80                  

3 0
3 years ago
Which expressions are equivalent to the one below? check all that apply. log(10^3)
Mademuasel [1]

Answer:

They are a and b.

Step-by-step explanation:

We have got logarithms to the base 10 here.

We know that log 10^3 = 3 log 10   ( by  the law of logarithms).

Also log 10 = 1 ( by definition) so log 10^3 = 3 log 10 = 3.

8 0
3 years ago
Read 2 more answers
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