Answer:
44.4%
Step-by-step explanation:
Given that:
Equation of best fit : y = 4x + 15
Where, y = number of trees x years after a planting program
When x = 3
y = 4(3) + 15 = 12 + 15 = 27 trees
When x = 6
y = 4(6) + 15 = 24 + 15 = 39 trees
Percentage change in total number of trees:
((39 - 27) / 27) * 100%
(12 / 27) * 100%
0.44444 * 100%
= 44.4%
Ob babysits the kids next door every day after school for 1.5 hours. He earns $3.50 an hour. How much money will he earn in 6 weeks if school is in session 5 days a week the whole time? Show your work.
Answer:
$157.5
Step-by-step explanation:
Given that:
Number of hours worked after the school = 1.5 hours
Earnings per hour = $3.50
Earnings for one day or 1.5 hours = 1.5 \times 3.50 = $5.25
Earnings for 5 days or a week = Number of days [tex]\times[/tex] Earnings for 1.5 hours = 5 [tex]\times[/tex] 5.25 = $26.25
Number of weeks for which Ob works = 6
Total earnings in 6 weeks = Number of weeks [tex]\times[/tex] Earnings in one week = Number of weeks [tex]\times[/tex] Earnings in 5 days
Total earnings in 6 weeks = 6 [tex]\times[/tex] $26.25 = $157.5
The price of Nintendo Switch was reduced from $300 to $240 during a
Black
Friday sale. By what percentage was the price of the gaming system
reduced?
Answer:
20% or .2
Step-by-step explanation:
First divide 240 by 300
240/300
this gives you .8, you would then subtract that from 1 to get .2
You can check your answer by multiplying 300 by .2
300*.2
this gives you 60 which is the difference between the 2 numbers
Hope this helps
Find the x-intercept and y-intercept
from the following linear equation:
-3x + 11y = 66
x - intercept (-22, [?])
y - intercept ([],[])
Answer:
x - intercept: (-22, 0)
y - intercept: (0, 11)
Step-by-step explanation:
Given the linear equation
-3x + 11y = 66
Determining the x-intercept
We know that the x-intercept can be computed by setting the value y=0 and solving for x.
substitute y = 0
-3x + 11y = 66
-3x + 11(0) = 66
-3x + 0 = 66
-3x = 66
Divide both sides by -3
-3x/-3 = 66/-3
x = -22
Thus, the ordered pair representing the x-intercept : (-22, 0)
Determining the y-intercept
We know that the y-intercept can be computed by setting the value x=0 and solving for y.
substitute x = 0
-3x + 11y = 66
-3(0) + 11y = 66
0 + 11y = 66
11y = 66
Divide both sides by 11
11y/11 = 66/6
y = 11
Thus, the ordered pair representing the y-intercept : (0, 11)
Therefore, we conclude that:
x - intercept: (-22, 0)
y - intercept: (0, 11)
Answer:
X=(-22,0)
Y=(0,6)
During an online sale, you buy three sweatshirts and two pairs of sweatpants for $85.50. Later you buy three more sweatshirts and four more pairs of sweatpants for $123. (You can never have too many sweats during a pandemic). What is the sale price of each sweatshirt and each pair of sweatpants?
Answer:
Step-by-step explanation:
let
x = price of a sweatshirt
y = trice of sweatpants
three sweatshirts and two pairs of sweatpants for $85.50
3x + 2y = 85.50
three more sweatshirts and four more pairs of sweatpants for $123
3x + 4y = 123
by solving the system of equations
3x + 2y = 85.50
3x + 4y = 123
we find
x = $16
y = $18.75
The difference of a number x and 3 is at most -2
Answer:
x is a number "the difference of" means subtract
therefore the "difference between 3 and a number " would be 3-x=-2
3-5= -2
Step-by-step explanation:
A pyramid is made above a cuboid with measure 90cm×50cm×225cm. If the height of the pyramid including cuboid is 240cm, find the total volume.
Answer: whatever do I care
Step-by-step explanation: I don’t care
The required volume of the pyramid is, 22500 cubic cm.
What is volume?Volume is referred to as the area occupied within an object's three-dimensional space.
Given that,
The length of cuboid = 90 cm
Width of cuboid = 50 cm
And height of cuboid = 225 cm
Let the height of the pyramid is x cm
Since the height of cuboid and pyramid = 240 cm
⇒ 225 + x = 240
⇒ x = 15 cm
Since the base of pyramid will be the same as the base of cuboid,
The volume of pyramid = 1/3 x base area x height
= 1/3 x 90 x 50 x 15
= 22500
The volume of the pyramid is 22500 cubic cm.
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What is the scale factor of ARST to A UVW?
NEED HELP!
Answer:
B:1
Step-by-step explanation:
the values are the same, so we know the scale is 1:1
hope this helps
Answer:
b)1
Step-by-step explanation:
Solve the system of equations.
7x−3y=20
y=5x−4
x=
y=
Answer:
Step-by-step explanation:
substitute the value of y in the first equation.
7x-3(5x-4)=20
7x-15x+12=20
-8x=20-12
x=8/-8
x= -1
then you substitute the value of x on the y equation to find y
y=5×-1 -4
y= -5-4
y= -9
Answer:
x = -1, and y = -9
Step-by-step explanation:
This is done by solving one of the two equations for x or y, then substituting it in place of that variable in the other equation.
Since y is already clearly defined in the second equation let's go with that:
[tex]Given\ 7x - 3y = 20,\ and\ y = 5x - 4[/tex]
[tex]7x - 3(5x - 4) = 20[/tex]
[tex]7x - 15x + 12 = 20[/tex]
[tex]7x - 15x = 20 - 12[/tex]
[tex]-8x = 8[/tex]
[tex]x = -1[/tex]
Now we can replace x in the equation for y with -1:
[tex]y = 5(-1) - 4[/tex]
[tex]y = -5 - 4[/tex]
[tex]y = -9[/tex]
To make sure our answers are correct, let's substitute them into the original equations:
[tex](-9) = 5(-1) - 4\\-9 = -5 - 4\\-9 = -9[/tex]
Good, let's test the other equation
[tex]7(-1) - 3(-9) = 20\\-7 - (-27) = 20\\-7 + 27 = 20\\20 = 20[/tex]
So we know that our answer is correct.
The weight in pounds of seven packages are 25, 10, 20, 4, 6, 3, and 9. The weight of an eighth package is added to the list. The mean weight of the eight packages is 12 pounds. What is the weight in pounds of the eight package?
Answer:
7 because to get the mean it has to be in the middle which comes down to the Number 9 package so that means the the 8th package has to be 7 pounds
Step-by-step explanation:
Reena bought a jacket for £45 . six months later ,she sold it for £34.65.What was her percentage loss?
When Reena bought a jacket for $45 and after six months later she sold it for $34.65, then the percentage loss is 25%
Given,
Reena bought a jacket for = $45
Selling price of jacket = $34.65
Here, selling price is lower than cost price, so we can consider it as loss
We know,
Loss percentage = (Loss / Initial cost)×100
Loss = Initial cost - Selling price
Loss = 45 -34.65= $10.35
Loss percentage =[tex](\frac{10.35}{45}) 100[/tex]
=0.25×100
=25%
Hence, when Reena bought a jacket for $45 and after six months later she sold it for $34.65, then the percentage loss is 25%
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The Eiffel Tower in Paris, France. Lizbeth is 5.5 feet tall. She looks up at an angle of elevation of 72° to see the top from 318 feet away. Based on her measurements, calculate the height of the Eiffel Tower. Round to the nearest hundredth of a foot.
Answer:
The height of the Eiffel Tower will be 318 feet.
Step-by-step explanation:
Please check the attached graph.
From the diagram, it is clear that Lizbeth is 5.5 ft tall, seeing the top from 318 feet away, making an angle of elevation to be 72⁰.
The diagram makes a right-angled triangle.
Given the angle = Ф = 72⁰ Adjacent = a = 5.5 ft Opposite = b = 318 ft Hypotenuse = the height of the Eiffel Tower = c ?
Pythagorean Theorem:
For a right-angled triangle, with sides 'a' and 'b', the hypotenuse 'c' is defined as:
[tex]c=\sqrt{a^2+b^2}[/tex]
[tex]a=5.5[/tex][tex]b=318[/tex][tex]c=\sqrt{5.5^2+318^2}[/tex]
[tex]c=318[/tex] feet
Therefore, the height of the Eiffel Tower will be 318 feet.
√4x-4=√5x-1−1.
there's 2 answers apparently
Answer:
x=−8.472135
Step-by-step explanation:
Point B is in quadrant __________ and Point D is in quadrant __________.
A. I, II
B. IV, I
C. II,I
D.IV,III
Answer:
A
Step-by-step explanation:
Answer:
A
Step-by-step explanation:
15.31 x 0.7
10.717
11.717
107.17
1.0717
Answer:
10.717
Step-by-step explanation:
15.31×0.7 = 10.717
I need some answers be quick pls. If you get it right I will give you brainliest
Step-by-step explanation:
multiple the power and real number
Answers;
a) Multiply 2 by 3: 6ab.
b) Multiply [tex]c^{5}[/tex] by c by adding the exponents: c^6 or [tex]c^{6}[/tex].
c) Simplify the expression. 10y^7 or [tex]10y^{7}[/tex].
d) Simplify the expression. 12g^4h^5 or [tex]12g^{4}h^{5}[/tex].
An order of beef nachos is $2.00 more than an order of
chicken nachos. You and your friends order 2 orders of chicken nachos and
one order of beef nachos for a total of $21.50. Determine the price of a
single order of chicken nachos.
Answer:
8.75
Step-by-step explanation:
(21.50/2)-2
Answer:
a single order of chicken nachos is $6.50
Step-by-step explanation:
Because 2 orders of chicken nachos is $13.00($6.50 times 2) and one order of beef nachos is $8.50, add the $13.00 and $8.50 and you get $21.50.
Have a great day!
If point A is located at (5, -7),
and there are 8 points between
A and B, what could be the
possible coordinates for point
B?
helppp finals are tomorrow
Answer:
Step-by-step explanation:
y = -5x
When x = -2 ; y = -5* (-2) = 10 ; (-2 , 10)
When x = -1 ; y = -5 *(-1) = 5 ; (-1 , 5)
When x = 0 , y = 0 ; (0 , 0)
When x = 1 ; y = -5 *1 = -5 ; (1 , -5)
When x = 2 ; y = -5 *2 = -10 ; (2 , -10)
Mark these points (-2 , 10) , (-1 , 5) , (0 , 0) , (1 , -5) , (2 , -10) and join them.
what is 90% round to the thousandth place
Answer:
0.09
Step-by-step explanation:
Move the decimal 3 points over :)
**please mark brainliest!!
PLEASE HELP, 20 POINTS!!!!
Answer:
Oh thx for the 20 points &
2(x+6)=-36
Step-by-step explanation:
which of these is a simplified form of the equation 6y + 4 = 8 + 2y + 2y?
6y + 4 I guess is the answer for the question
Which fractions are less than 1/2
Answer:
1/4, 4/10, 3/7, 24/50 are all less than 1/2.
Step-by-step explanation:
Given right triangle ABCABC with altitude \overline{BD} BD drawn to hypotenuse ACAC. If AD=3AD=3 and AC=12,AC=12, what is the length of \overline{AB}? AB ? (Note: the figure is not drawn to scale.)
Answer:
The answer is "6"
Step-by-step explanation:
[tex]\to x^2 = 3 \times 12 \\\\\to \sqrt{6^2 +3^2} = \sqrt{45} =\sqrt{9} \sqrt{5} = 3\sqrt{5} \\\\\to x= 6[/tex]
The value of [tex]\overline{AB} =6[/tex]
Can someone explain what I'm supposed to do here? I have to have this in by tonight, as well.
Answer:
5-6y+7b
Step-by-step explanation:
ok boii 32ed32d d d 3 . 2 2 22 2
Here is the problem
Plz help
My brain hurts????????????????
Answer:
im pretty sure its 144.5
what is 50% of 180 ?
Answer:
90
Step-by-step explanation:
Answer:
The answer is 90.
Step-by-step explanation:
I hope this helps and if it did I would appreciate it if you marked me Brainliest. Thank you and have a nice day!
A book has a font and a back and 400 pages. The front and back cover are each 0.9mm thick, measured to 1 decimal place. Each page is 0.13mm thick measured to 2 decimal places calculate the minimum thickness of the book
Answer:
53.8 mm
Step-by-step explanation:
Front page and a back page + 400 pages.
The front and back cover are each 0.9mm thick, measured to 1 decimal place.
Total thickness of front and back page = 0.9mm × 2
= 1.8 mm
Each page is 0.13mm thick measured to 2 decimal places
Total number of pages = 400
Total thickness of the pages = Thickness of each page × Total number of pages
= 0.13mm × 400
= 52 mm
minimum thickness of the book = Total thickness of front and back page + Total thickness of the pages
= 1.8mm + 52mm
= 53.8 mm
The minimum thickness of the book is 53.8 mm
the opposite of -2.25
Answer:
2.25
Step-by-step explanation:
That's the opposite.
Answer:
Step-by-step explanation:
2.25
solve the following
U A room id 48 m long, 3:6 M cared and om hight.
And the cast of dayng tiles on the floor
its 4 walls at the crate of Ro loome
anol
Answer:
is there a picture
Step-by-step explanation:
Pls be right will give brainliest
Answer
15
Step-by-step explain
6+9=15