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Vitek1552 [10]
3 years ago
10

Martin is building a sandcastle at the

Mathematics
2 answers:
andrew-mc [135]3 years ago
6 0

Answer:

Step-I by-step explanation:I don’t know

Likurg_2 [28]3 years ago
3 0

Answer:

Step-by-step explanation: I don’t know

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Which relationship is always true for the angles r, x, y, and z of triangle ABC?
stellarik [79]

Answer:

The correct option is C) x + y + z = 180 degrees

Step-by-step explanation:

Consider the provided information.

It is given that four r, x , y and z.

If x , y and z are the interior angle then,

According to the Angle sum property of triangle: The sum of three interior angles of triangle is 180°.

Therefore, the sum of  x , y and z must be equal to 180 degrees.

Hence, the correct option is C) x + y + z = 180 degrees

5 0
4 years ago
1. It costs $5820 to get new windows for a certain house. Each of the 28 windows costs the same amount. (a) Determine an estimat
leonid [27]
Estimated round up $6000 and divide by $30(rounded up) = $200 each estimated
$5820÷28= $207.857.. so round up to $208
6 0
3 years ago
Read 2 more answers
Father is 20 years older than to win. if the aim of their age is 40 years . find the answer​
Elena L [17]

Answer:

we make 20&40 to be add.

Step-by-step explanation:

if we add 20&40

mean 20+40=60

so the answer is 60.

7 0
3 years ago
A shopkeeper sold 20 mobile sets of same brand for Rs 3,00.0000 at the same rate in a week What is the selling price of each mob
algol [13]

Answer:

15

Step-by-step explanation:

cost of 20 mobile set=300

cost of 1 mobile set

<em>=</em><em>cost </em><em>of </em><em>mobile </em><em>set/</em><em>number </em><em>of </em><em>mobile </em><em>set</em>

<em>=</em><em>3</em><em>0</em><em>0</em><em>/</em><em>2</em><em>0</em>

<em>=</em><em>1</em><em>5</em>

7 0
3 years ago
The perimeter of a rectangle is 200 feet. Describe the possible lengths of a side if the area of the rectangle is not to exceed
slavikrds [6]
Length=x
width=y
Perimeter of a rectangle=2(length)+2(width)
Therefore:
2x+2y=200
We simplify the equation dividend both sides of this equation by 2:
x+y=100  
Then:
y=100-x

Area of a rectangle: length x width
We have the next inequation: 
x(100-x)<900
100x-x²<900
x²-100x+900<0

We solve this inequation
1) we solve this equation:
x²-100x+900=0
x=[100⁺₋√(10000-3600)]/2=(100⁺₋80)/2
We have two solutions in this equation:
x₁=90
x₂=10

2)With these values, we make intervals:
(-∞,10)
(10,90)
(90,∞)

3)With these intervals, we check it out if the inequation works: 
(-∞,10); for example; if x=0 ⇒ 0²-100(0)+900=100>0, this interval don´t work.
(10,90);f.e: if x=11; ⇒ 11²-100(11)+900=-79<0, this interval works.
(90,∞); fe; if x=91 ⇒91²-(100)91+900=81>0; this interval don´t work.

answer: the possible lengths would be the values inside of this interval:
(10,90) ft.
7 0
4 years ago
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