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Sergio [31]
3 years ago
11

Find the product 5×8,000 thousands

Mathematics
1 answer:
svp [43]3 years ago
3 0
The product of
5 \times 8000
is 40000
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What are the two missing sides of the triangle ??
igor_vitrenko [27]
Remark
It's a right triangle so the Pythagorean Theorem applies. All you have to do is put the right things in the right places of the formula.

Givens
a = x
b = x + 4
c = 20

Formula and Substitution.
a^2 + b^2 = c^2
x^2 + (x + 4)^2 = 20^2

Solution
x^2 + x^2 + 8x + 16 = 20 Collect the like terms on the left.
2x^2 + 8x + 16 = 20  Subtract 20 from both sides.
2x^2 + 8x + 16 - 20 = 0  
2x^2 + 8x - 4 = 0         Divide through by 2
x^2 + 4x - 2 = 0

Use the quadratic formula
a = 1
b = 4
c = - 2

\text{x = }\dfrac{ -b \pm \sqrt{b^{2} - 4ac } }{2a} 
 
\text{x = }\dfrac{ -4 \pm \sqrt{4^{2} + 4(1)(2) } }{2} 


From which x = (-4 +/- sqrt(24) ) / 2
x1 = (- 4 +/- sqrt(4*6) ) / 2
x1 = (- 4 +/- 2 sqrt(6) ) / 2
x1 = -2 + sqrt(6)
x2 = -2 - sqrt(6)  This is an extraneous root. No line can be minus.

x1 = + 0.4495
x2 = x + 4 = 4.4495
6 0
3 years ago
4x^2-20x+25<br> Factor the quadratic completely
MissTica

Answer:

just go in your browser and use m    a    t   h  w    a    y  no spaces and should be the first one

Step-by-step explanation:

4 0
3 years ago
Just please help me I will give branliyest
alex41 [277]

Answer:

A

Step-by-step explanation:

because proportion is right vertical

6 0
3 years ago
A mailbox that is 4 feet tall cast a shadow that is 12 feet long. A street lamp across the street is 10 feet tall. Use indirect
Free_Kalibri [48]
Proportion: 4/12=x/10
Answer: x=3 1/3
3 0
3 years ago
Read 2 more answers
If p(X)=x²-4x+5, then the value of p(1) is____<br>a)-1. b)0 c)1 d)2​
swat32

Answer:

p(x)=x^{2}-4x+5\\p(x)= 1^{2}-4(1)+5\\p(x)=1-4+5\\p(x)=2

So 2 is the answer.

Hope this helps :D

6 0
3 years ago
Read 2 more answers
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