Which expression is equivalent to the area of metal sheet required to make this square-shaped traffic sign? (5 points) A square shaped traffic sign is shown with length of one side labeled as 2x minus 1. Select one: a. 4x2 − 1 b. 4x2 + 1 c. 4x2 + 4x − 1 d. 4x2 − 4x + 1
2 answers:
The correct answer is d) 4x² - 4x + 1. The area of a square is found by squaring the side length: (2x-1)² = (2x-1)(2x-1) = 2x*2x - 2x*1 - 2x*1 - 1(-1) = 4x² - 2x - 2x + 1 = 4x²-4x+1
Answer:
Step-by-step explanation:
Given the length of one side of the square shaped traffic sign = (2x-1)
We need to find the expression for the area of the square shaped traffic sign.
Area of the square of given by formula
Plugging value of expression length of side of the square in above formula, we get
A= (2x-1) (2x-1)
Let us foil it now.
A = (2x)(2x) +(2x)(-1) + (-1) (2x) +(-1)(-1)
=
Therefore, correct option is
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Answer:
4 miles
Step-by-step explanation
If your mom can walk 1 mile in 14 minutes then 2 miles would take her 28 minutes 3 miles would take her 42 minutes and finally if she walked 4 miles it would take her 56 minutes.
14 + 14 + 14 + 14 = 56
14 x 4 = 56
Answer:
7.2
Step-by-step explanation:
Given that in triangle LMN, LO is angle bisector of angle L.
LN =10 and LM =18
By angle bisector theorem for triangles we have
LN/LM = NO/MO
Substitute the values for known things and x for MO
We get
10/18 = 4/x
Or cross multiply to get
10x=72
x=7.2
So answer is 7.2
a. 1.104
b. 1.2
c. 0.8382
d. 1.225
e. 0.8932
f. 1.4381
g. 79.92
h. 45.573
Well first let's find out how many books she reads in 1 month. 1) 22 (books) ÷4 (months)=5.5 she reads 5.5 books in one month. Now we multiply 5.5 by the amount of months she will be reading. 2) 5.5 (books) ×10 ( months)=55 books SAMANTHA WILL READ 55 BOOKS IN 10 MONTHS
Let's see
#a
Take 28
(28)² (30-2)² 30²-2(30)(2)+2² 900-120+4 780+4 784 #2
Take 9,10
9³+10³ (9+10)(9²-9×10+10²) (19)(81-90+100) 19(181-90) 19(91) 1729