What is the area of a square with side lengths of 7 feet? A. 28 ft B. 28

What is the area of a square with side lengths of 7 feet? A. 28 ft B. 28 ft2 C. 49 ft2 D. 49 ft

2 months ago

Solution 1

Guest Guest #9817
2 months ago
The side lengths of a square is equal, thus length=width, hence the dimensions of our square will be:
length=width=7 ft
hence;
area=length×width
area=7×7
area=49 ft²

Answer: 
C.
49 ft2

📚 Related Questions

Question
Two mechanics worked on a car. the first mechanic worked for 10 hours, and the second worked for 15 hours. together they charged a total of 1800. what was the rate charged per hour by each mechanic if the sum of the two rates was $155 per hour ?
Solution 1

The rates charged per hour by the first and second mechanics will be  $105 and $50.

What is a linear equation?

It is defined as the relation between two variables, if we plot the graph of the linear equation we will get a straight line.

If in the linear equation, one variable is present, then the equation is known as the linear equation in one variable.

It is given that two mechanics worked on a car, the first mechanic worked for 10 hours, and the second worked for 15 hours. together they charged a total of 1800.

Suppose x is the hourly rate for the first mechanic and y is the hourly rate of the second.

If the total money earned is 1800.

10x + 15 y = 1800  ---- (1)

If both have their individual rates the sum of the hourly rate is,

x+ y = 15            -------- (2)

Rearrange the equation,

x = 155- y

Substitute the value of x in equation 1 we get,

10x + 15 y = 1800

10(155-y) + 15y = 1800

1150 - 10y + 15y = 1800

5y = 250

y = 50

Substitute the value of y in equation 2 we get,

x = 155- y

x= 155 - 50

x = 105

Thus, the rates charged per hour by the first and second mechanics will be  $105 and $50.


Learn more about the linear equation here:

brainly.com/question/11897796

#SPJ2

Solution 2
This can be solved by setting up a systems of equations. Let x be the hourly rate for the first mechanic and y be the hourly rate of the second.

Total money earned:
10x + 15y = 1800
Sum of hourly rates:
x + y = 155
To solve this, you solve for one equation first, substitute it in the second, then input it back into the first equation. I will first be solving for x.

x + y = 155 \\ x = 155 - y
Input this into the other equation to find y:
10(155 - y) + 15y = 1800 \\ 1550 - 10y + 15y = 1800 \\ 5y = 250 \\ y = 50
Input y into the first equation:
x + 50 = 155 \\ x = 105

The first mechanic charges $105 per hour and the second mechanic charges $50 per hour.
Question
Marie is buying an ice-cream sundae. There are 3 sizes of sundaes, 15 different ice-cream flavors, and 5 different toppings. How many ways can Marie choose a sundae?
Solution 1
Since each size of sundae has 15 flavor choices, we can find the number of combinations by multiplying the size of sundaes with the different ice cream flavors. The same rule can be applied to the number of different toppings, so you can set up this equation:
3 \times 15 \times 5 = 225
Multiplying them out, you can see that there are 225 different combinations of sundaes
Solution 2
225 different ways, because 3 x 15 x 5 = 225.
Question
How many terms are in the arithmetic sequence 6, 2, −2, …, −102? Hint: an = a1 + d(n − 1), where a1 is the first term and d is the common difference 27 28 29 30
Solution 1
The number of sequence in the arithmetic sequence given by:
 6, 2, −2, …, −102
will evaluated as follows:
the explicit formula is:
an=a1+d(n-1)
a1=first term
d=common difference
n=number of terms
thus from the question:
a1=6
d=2-6=-4
an=-102
plugging the values in the expression we get:
-102=6-4(n-1)
solving for n we shall have:
-102-6=-4(n-1)
-108=-4(n-1)
27=n-1
thus
n=27+1
n=28

Answer: 28 terms
Question
How to work out halfway between 1.1 and 1.2
Solution 1
Add the two numbers, then find one half of their sum.
Question
The line represented by y = 3x − 6 and a line perpendicular to it intersect at R(3, 3). What is the equation of the perpendicular line? A)y=-1/3x +4 B)y=1/3x + 7/3 C)y=-1/2x +5/2 D)y=-3x + 5
Solution 1
The answer is (A)
opposite slop

Flip the original slop and change the sign
The equation gonna be like (A)

y-intercept is doesn't matter same or different


hope it's help
Question
Lin is 7 years younger than Adrian, Adrian is 4 years older than half of Maya's age, The sum of the 3 ages is 61, How old is Lin?
Solution 1

Answer: Age of Lin is 12

Solution:

Let X= age of Maya

(X/2)+4= age of Adrian

((X/2)+4)-7= age of Lin

X+(X/2)+4+((X/2)+4-7)=61

X+.5X+4+.5X+4-7=61

2X+4+4-7=61

2x=61-8+7

2X=60

X=30 age of Maya

19= age of Adrian

Age of Lin is

=((X/2)+4)-7

=15+4-7

=12

To check if this is correct

30+19+12=61

Question
How do you convert cos(x) into sin(x) and tan(x) ?
Solution 1
Since tan x = sin x    /    cos x, we could write:

              tan x
cos x = ----------    In other words, rewrite "cos x" in an expression as

  tan x 
-----------
  sin x
Question
The number of assists per match for the setter on your school's volleyball team has a mean of 58 and a standard deviation of 7. if in the last game he made 77 assists, how many standard deviations is that from the mean? 1.36 standard deviations below the mean 2.71 standard deviations above the mean 1.36 standard deviations above the mean 2.71 standard deviations below the mean
Solution 1

Answer:

(B)

Step-by-step explanation:

It is given that The number of assists per match for the setter on your school's volleyball team has a mean of 58 and a standard deviation of 7.

Also,  in the last game he made 77 assists, therefore

77-58=19 assists away from the mean.

Thus, To get the number of standard deviation that 77 is from the mean, we get the z-score which is given as:

z=\frac{x-\mu}{\sigma}

Substituting the given values, we get

z=\frac{77-58}{7}

z=\frac{19}{7}

z=2.71

Thus, there are 2.71 standard deviations above the mean.

Hence, option B is correct.

Solution 2
Given that mean=58
standard deviation=7
thus
77 is (77-58)=18 away from 58
This will be:
19/7=2.71

standard deviations from the mean.

Answer: 2.71 standard deviations above the mean
Question
Pamela drove her car 99 kilometers and used 9 liters of fuel. She wants to know how many kilometers shee can drive with 12 liters of fuel. How many kilometers can Pamela drive with 12 liters of fuel?
Solution 1

Answer:

132 km

Step-by-step explanation:

1. she can drive 99 km (kilometers) with 9 liters of fuel, 99/9 is 11

2. if she wants to find out how many kilometers she can drive with 12 liters of fuel, then just multiply 12x11 which is 132

Solution 2
121 kilometers. The ratio of kilometers to liters of gas is 11:1. Then you substitute the 1 for twelve and multiply 11 by 12. The answer is 121 kilometers.
Question
Simplify. x-2/(x^2+4x-12)
Solution 1
Simplifying the above expression we shall proceed as follows:
x-2/(x^2+4x-12)
factoring out the denominator we get:
x^2+4x-12
=x^2-2x+6x-12
=x(x-2)+6(x-2)
=(x+6)(x-2)
thus our expression will be:
(x-2)/[(x+6)(x-2)]
simplifying the above we get:
1/(x+6)

Answer: 1/(x+6)