Answer:
[tex]27,648,000[/tex]
Step-by-step explanation:
The area of a rectangle is given by [tex]l\cdot w[/tex]. Landen's 20 feet by 80 feet front lawn therefore has an area of [tex]20\cdot 80 = \fbox{$1600\: \mathrm{ft^2}$}[/tex].
He counts there are 120 blades of grass per square inch. There are [tex]12^2=144[/tex] square inches in one square foot.
Therefore, his lawn has an area of [tex]1600\: \mathrm{ft^2}\cdot \frac{144\:\mathrm{in^2}}{1\:\mathrm{ft^2}}=230,400\:\mathrm{in^2}[/tex].
Thus, there are [tex]230,400\:\mathrm{in^2}\cdot 120=\fbox{$27,648,000$}[/tex] blades of grass in the entire lawn.
4x + 5y = -10
4x + 3y = -22
Solve by using the method of elimination
Answer:
y=6. &. x = -10
Step-by-step explanation:
if 4x + 5y = -10
then 4x = -10 -5y. ---------->(1)
if 4x + 3y = -22
then 4x = -22 -3y. ------------>(2)
from equation (1) & (2) :
then -10 -5y = -22 -3y
then 22 -10 = 5y -3y
12 = 2y
then y=6
substituting in (1) or (2):
then. x= -10
G
A scale drawing is made to enlarge a picture by using a scale factor of 3. The enlarged picture is 9 inches by 15 inches
What are the dimensions of the original picture?
x
O 3 inches by 5 inches
O 3 inches by 15 inches
O 6 inches by 12 inches
O 27 inches by 45 inches
Answer:
3 inches by 5 inches
Step-by-step explanation:
You have to divide the numbers 9 and 15 by 3
9÷3=3
15÷3=5
So that means it is 3 inches by 5 inches
Answer:
3 inches by 5 inches
Step-by-step explanation:
You have to divide the numbers 9 and 15 by 3
9÷3=3
15÷3=5
So that means it is 3 inches by 5 inches
giving points and brainly
Answer:
A 159.25 to the second power
Step-by-step explanation:
he simplest (and most commonly used) area calculations are for squares and rectangles. To find the area of a rectangle, multiply its height by its width. For a square you only need to find the length of one of the sides (as each side is the same length) and then multiply this by itself to find the area.
HEELP ASAP
1. Evaluate the following algebraic expression: 8h ÷ 12 when h=3
Step-by-step explanation:
3h ÷ 12
= but this is wt I know❤️
Answer:
8 (3) /12 = 24/12, 24/12= 2
Find the prime factorization of 120.
23 × 3 × 5
2 × 32 × 5
2 × 3 × 5
2 × 32 × 52
Answer:
(7/8 - 4/5)^2 = 9/
1600
= 0.005625
Step-by-step explanation:
Subtract: 7/
8
- 4/
5
= 7 · 5/
8 · 5
- 4 · 8/
5 · 8
= 35/
40
- 32/
40
= 35 - 32/
40
= 3/
40
For adding, subtracting, and comparing fractions, it is suitable to adjust both fractions to a common (equal, identical) denominator. The common denominator you can calculate as the least common multiple of both denominators - LCM(8, 5) = 40. In practice, it is enough to find the common denominator (not necessarily the lowest) by multiplying the denominators: 8 × 5 = 40. In the next intermediate step, the fraction result cannot be further simplified by canceling.
In words - seven eighths minus four-fifths = three fortieths.
Exponentiation: the result of step No. 1 ^ 2 = 3/
40
^ 2 = 32/
402
= 9/
1600
In words - three-fortieths squared = nine one-thousand six-hundredths.
If f(x)=|x+2|+1 what is f(-5)?
Answer:
-5f
Step-by-step explanation:
Please help! If you have any questions please just ask
the image above is a _______?
a. rectangle
b. square and parallelogram
c. square
d. square and rectangle
e. parallelogram
f. square, rectangle and parallelogram
Answer:
F
Step-by-step explanation:
This is a square if you think about it, but it has the abilities of a rectangle and parallelogram. So it is F.
Sarah and her 4 Friends share some cookies. If each person gets 3 cookies, how many cookies were shared? Write a mathematical equation that represents this situation
PLS HELP ASAPPP I WILL BE MARKING BRAINLIEST AFTER TWO ANSWERS
Answer:
The answer is the 2nd one im pretty sure
Step-by-step explanation:
hi, its C = 3
5
Step-by-step explanation:
Select the correct answer.
The loudest animal on Earth is the blue whale. Blue whales can emit sound with an intensity of 106.8 watts/meter2. The equation
log
by the human ear, Io (approximately 1 x 10-12 watts/meter).
Based on this information, which value is closest to the sound level, in decibels, of the vocalizations of a blue whale?
A.
140 dB
B.
100 dB
C. 240 dB
D. 1,000 dB
Answer:
140 db
Step-by-step explanation:
I have succesfully finished tihs
The value is closest to the sound level of the vocalizations of a blue whale is 140dB.
We have given that,
Intensity(I)= 106.8 watts/meter^2
The intensity of sound hair by the human ear is,
[tex]I_0=1\times10^{-12}[/tex]
What is the meaning of the sound intensity?Sound intensity is defined as the power carried by sound waves per unit area in a direction perpendicular to that area.
We have to find which value is closest to the sound level, in decibels, of the vocalizations of a blue whale
So we have given the formula
[tex]B=10 log(\frac{I}{I_0} )[/tex]
So use the given value we get
[tex]B=10 log(\frac{106.8}{1\times 10^{-12}} )[/tex]
B= 140.28 dB≈140 dB
Therefore the value is closest to the sound level of the vocalizations of a blue whale is 140dB.
To learn more about the intensity visit:
https://brainly.com/question/25379849
Mindy needs to rake a rectangular part of her yard that is 9 feet by 8 feet. It takes her 10 minutes to rake an area that is 12 feet square. How long will it take Mindy to rake the rectangular part of her yard?
Answer:
60 minutes
Step-by-step explanation:
Time taken to rake 12ft² = 10 minutes
Area of Mindy's rectangular path :
Area of rectangle = Length * Width
Dimension of Mindy's rectangular path = 9ft by 8ft
Area = 9ft * 8ft
Area = 72ft²
Hence, it will take Mindy;
(Area of Mindy's path / 12 ft) * time taken
(72ft² / 12ft²) * 10 minutes
6 * 10 = 60 minutes
At a dinner, the meal cost $22 and a sales tax of $1.87 was added to the bill. At the same restaurant, another family had a meal and the meal cost $66.00. How much would the sales tax be on a $66 meal?
Answer:
71.61
Step-by-step explanation:
hope this helps good luck
A bag has one red ball, three blue balls and twice as many green balls as blue balls. if one ball is drawn (without looking) from the bag what are the chances that the ball will be blue?
Answer:
3/10 or three tenths or 0.3 or 0.30
Step-by-step explanation:
Plz brainliest
Answer: 30% or 3/10
Step-by-step explanation:
First you need to figure out how many balls are in the bag. There is 1 red, 3 blue, and 2x (x=# of blue balls) green balls. since there is 3 blue balls you double 3 to get how many green balls there are, which is 6. Then you do 1+3+6 to give you 10. Since there is 3 blue balls in a bag that consists of 10 balls, you have a probability of 3/10 or 30% or .3 to draw a blue ball.
plz helps so i can pass
Answer:
C
Step-by-step explanation:
did it on edge
Plot the point (-3,6). Plot the point (4, -5).
Step-by-step explanation:
Go left 3 and then up 6 then make a dot
Go right 4 thend own 5 then make a dot
I hope this helps
For each graph shown below, select the correct description for slope and y-intercept. In the fourth column, create an equation that can be used to describe the function shown in the graph.
Round 154.98 to the nearest 10th
Answer: 155
Step-by-step explanation:
To round 154.98 to the nearest tenth, remember that in the hundredths place is 8 and is more than 5. Therefore, the tenths value of 154.98 increases by 1 to 0.
Need help i suck at mathh
Jacob drives 8km in 12 minutes. What is his average speed (km/h) ?
Answer:
40 km/h
Step-by-step explanation:
PLz mark brainliest
16km:24mins
24km:36mins
32km:48mins
40km:60mins
Answer:
Step-by-step explanation:
8km per 12 min would be 40km/hr :)
Order the following numbers from least to greatest.
Put the least value on the left.
Answer:
-5/2, -2, 1.7
Step-by-step explanation:
help me with this thanks for anyone who helps! :D
Answer:
x= 90-60
x=30
Step-by-step explanation:
Answer:
30° is the answer because its a right angle
Step-by-step explanation:
can you mark me brainliest? thank you
I need some help ? Does anyone know this:)I’m new too this thats why im asking loll
Answer:
C≈31.42
Step-by-step explanation:
Radius=5 (10 divided by 2)
C=2πr
Brainly plss
P L S H E L P W I LL S C A M I F YO U S T EA L M Y P O I N T S
Answer:
B for sure
Step-by-step explanation:
The amount of energy used decreases by a different amount each year.
Option B is the correct answer.
What is an expression?An expression contains one or more terms with addition, subtraction, multiplication, and division.
We always combine the like terms in an expression when we simplify.
We also keep all the like terms on one side of the expression if we are dealing with two sides of an expression.
Example:
1 + 3x + 4y = 7 is an expression.com
3 + 4 is an expression.
2 x 4 + 6 x 7 – 9 is an expression.
33 + 77 – 88 is an expression.
We have,
From the table,
Amount of energy used.
First-year: 1,000,000
Second-year: 900,000
Third year: 810,000
Fourth-year: 792,000
The difference between the amount of energy between consecutive years.
1,000,000 - 900,000 = 100,000
900,000 - 810,000 = 90,000
810,000 - 792,000 = 18,000
We see that,
There is a different amount of energy decreasing each year.
Thus,
The amount of energy used decreases by a different amount each year.
Learn more about expressions here:
https://brainly.com/question/3118662
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10. A bag of cat food contains 4
pounds. Each serving is 4 of a cup.
How many servings are in the bag?
Answer:
16
Step-by-step explanation:
each pound has 3.6 cups
1/4 of a pound can be multiplied
3.6 x 1/4 = 0.9
then we subtract 4 - 3.6 = 0.4 say if the question was for one pound
But we have to find 14.4 cups instead as;
3.6 x 4 = 14.4 = 4 pounds
We go back to 0.9 are first smaller serving = 1/4 cup
14.4/0.9 = 16
Factor this trinomial.
x² + 3x - 4
A. (x-4)(x-1)
B. (x - 4)(x + 1)
C. (x + 4)(x + 1)
D. (x+4)(x - 1)
Answer:
(x-1)(x+4), so D.
Step-by-step explanation:
Triangle abc gets translated and reflected prove its congruent to a"b'c"
A. AA postulate
B. HL Postulate
C.ASA throem
D.SSA Theroem
Answer: the answer is b
Step-by-step explanation: since i helped can i have brainlist please it would be greatly apperacited. :D
Graph the line that passes through the points (2,8) and (-5,8) and determine the equation of the line.
Answer: y=7
Step-by-step explanation:
First, graph the points, and you get a horizontal line. You see that the line is on the Y-Axis, and hits the y-axis at (0,7). Since it is horizontal, you get y=7
(r - 3)(3r + 6)= ? .....
Mr. Edwards purchased 3 bags of potatoes. He bought 36 potatoes in all. Each bag contains the same number of potatoes. How many potatoes are in each bag?
Answer:
12
Step-by-step explanation:
36 divided by 3 = 12
Hope This Helps
Answer:
39 or 12
Step-by-step explanation:
i got 39 by 36+3=39
i got 12 by 3 divided by 36= 12
A rectangular prism has a length of 7 inches and a width of 5 inches. The lateral area is 192 square inches. What is the height of the prism?
Answer:
I think it would be 5.49 as the height of the prism.
Step-by-step explanation:
I just did 7 × 5 which is 35, and then I did 192 ÷ 35 and got 5.49. I'm not completely sure but that's my best answer I hope it helps!