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Ivan
3 years ago
14

If the three angles of a quadrilateral are 120, 130, 100 then what is the fourth angle?

Mathematics
1 answer:
nalin [4]3 years ago
3 0

Answer:

c. 40

Step-by-step explanation:

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Write eighteen hundredths as a decimal.<br> P.S. dont put nothing stupid , just answer .
pishuonlain [190]

Eighteen hundredths as a decimal is 0.18

<h3><u>Solution:</u></h3>

We have to find eighteen hundredths as a decimal

Eighteen hundredths means 18 over one hundred

We have to write 18 over one hundred as decimal

A decimal is a fraction written in a special form

Let us first write 18 over one hundred in fraction form

Eighteen hundredths = 18 over one hundred

\rightarrow \frac{18}{100}

Now divide 18 by 100 to get the decimal form

\rightarrow \frac{18}{100} = 0.18

Thus the eighteen hundredths as a decimal is 0.18

4 0
3 years ago
Quadratics Question
Scrat [10]

P = 2(l+w)

200 = 2(l+w)

divide by 2 on each side

100 = l+w

let the length = x

100 = x+w

solve for w but subtracting x from each side

100 -x = w


A= l*w

we know l =x

substitute for w  because we found w above 100 -x = w

A =  x * (100-x)

distribute

A = 100x - x^2


10.  if A = 2400

2400 = 100x-x^2

subtract 100x from each side

2400 -100x = 100x-x^2 -100x

2400 -100x = -x^2

add x^2 to each side

2400-100x^2 + x^2 = -x^2 + x^2

x^2 -100x+2400 =0

factor

(x-60) (x-40) = 0

using the zero product property

x-60 = 0    x-40 = 0

x=60    x=40


If x=60  then 100 -x = w  100-60 = w  w=40

If x=40 then 100 -x = w  100-40 = w  w=60


The dimensions are 60m by 40 m



7 0
3 years ago
What is the solution of the system ?Use substitution.<br> Y= -3x<br> X + y = -4
DedPeter [7]
I hope this helps you



x-3x= -4


-2x= -4


x=2


y= -3.2



y= -6
4 0
3 years ago
4 thousands 7 hundreds equal47
quester [9]
No it is not because it is 47,000 
3 0
3 years ago
I need some help with these questions​
Elden [556K]

Answer:

yuuu7

Step-by-step explanation:

you know what to do with a different person and you know what to do with a different person 3³333 you know what to do with a different person and you know what to do

5 0
3 years ago
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