They are up and down and left and right
<u>Question 7:
Define x :
</u>
Let the digit in the ones place be x.
The digit in the tens place is x+2.
The sum of the digit and its reverse is 66
<u>Find x:</u>
10(x + 2) + x + 10x + (x + 2) = 66
10x + 20 + x + 10x + x + 2 = 66
22x + 22 = 66
22x = 44
x = 2
<u>Find the number:</u>
The number in the ones place = x= 2
The number in the tens place = x = 2 + 2 = 4
Answer : The number is 42.
<u>Question 8:</u>
<u>Define x:</u>
Let the digit in the tens place be x.
The digit in the ones place is x+7.
The number = 10x + x + 7 = 11x + 7
If the digit interchange,
the number = 10(x + 7) + x = 10x + 70 + x = 11x + 70
<u>Find x:
</u>
9(11x + 7) = 2(11x + 70)
99x + 63 = 22x + 140
99x - 22x = 140 - 63
77x = 77
x = 1
<u>Find the number:
</u>
x = 1
x + 7 = 1 + 7 = 8
So the number is 18
Answer: The number is 18.
Answer:
<em>~ 0.375 centimeters of the snowflake in real life ~</em>
Step-by-step explanation:
Let us plan out our steps, and solve for each:
<em>1. Given the information, let us create a proportionality as such:</em>
48 = 1 ⇒ x - centimeters of the snowflake in real life
18 x
<em>2. Now let us cross multiply, and solve through simple algebra for x:</em>
48 * x = 18,
x =<em> 0.375 centimeters of the snowflake in real ife</em>
Answer:
r = 7 cm
C = 43.982297150257 cm
A = 153.9380400259 cm<span>2
</span>r = radius
C = circumference
A = area
π<span> = pi = 3.1415926535898</span>
<span>√ = square root</span>
Answer:
141 inches (not sure if that's an option but that's what I got
Step-by-step explanation:
I added the areas of the trapezoid and the triangle in the screenshots
