The track and field coach records Ian's 400-meter race times during three practices. How much greater was the percent of change from Practice 1 to Practice 2 than from Practice 2 to Practice 3? Round to the nearest tenth.
Answer:
d. 1.5%
Step-by-step explanation:
Given - The track and field coach records Ian's 400-meter race times during three practices.
Practice 1 2 3
Time (s) 63 60 58
To find - How much greater was the percent of change from Practice 1 to Practice 2 than from Practice 2 to Practice 3? Round to the nearest tenth.
a. 7.9%
b. 4.8%
c. 3.3%
d. 1.5%
Proof -
% change from Practice 1 to Practice 2 change = [tex]\frac{60 - 63}{63}. 100[/tex]%
= [tex]-\frac{3}{63}.100[/tex]% = - 4.761904762 %
⇒% change from Practice 1 to Practice 2 change = - 4.762 %
Now,
% change from Practice 2 to Practice 3 change = [tex]\frac{58 - 60}{60}. 100[/tex]%
= [tex]-\frac{2}{60}.100[/tex]% = - 3.334 %
⇒% change from Practice 2 to Practice 3 change = - 3.3334 %
So,
- 4.461904762% - (- 3.3334%) = -4.461904762 + 3.3334 % = -1.4285 % ≈ 1.5%
∴ we get
Value = 1.5%
The correct option is - d. 1.5%
I need this done today whoever gets this correct gets brainliest!!! PLZZ HELPP MEE!!!
hurryy!!
Explanation is in the file
tinyurl.com/wpazsebu
Hey, can someone help me on this problem?
Answer:
1st one, 4th one, and 5th one
Step-by-step explanation:
Answer:
red, blue and purple
hey There!
for the first one
2*2=4
4*2=8
8*2= 16 so blue is correct
8*8=64 so cyan is not correct
2^8=256 so yellow is not correct
4*4=16 so red is correct
2^4 is the same as 2*2*2*2 which equals 16 so purple is also correct
please help with this question
what is the volume of this rectangle prism
Jason a 4 lengths of rope. The lengths are 3 inches, 15 centimeters, 0.3 meters, and 0.5 feet. About how much rope does Jason have [1 inch = 2.5 cm]
Answer: 67.5 cm
Step-by-step explanation:
Jason has 4 lengths of ropes
first is [tex]3\ in.\approx 7.5\ cm[/tex]
second is [tex]15\ cm[/tex]
Third is [tex]0.3\ m\approx 30\ cm\quad [\text{1 m = 100 cm}][/tex]
fourth is [tex]0.5\ ft\approx 6\ in.\approx 15\ cm\quad [\text{1 ft=12 in.}][/tex]
the total length of rope is the sum of four lengths
[tex]\Rightarrow 7.5+15+30+15=67.5\ cm[/tex]
5/6(-8/15)
A. 48/15
B.45/90
C.8/18
D.-25/16
Answer:
-4/9
Step-by-step explanation:
5*8 = 40
6*15 = 90
You keep the negative and add it to the final product which is -40/90.
Decimal is: -0.444444444444444444444444444444444444444444444444444444444444444
Here is a good website if you want math help calculated: https://www.wolframalpha.com/
can u help me with this and show work i only have 20 min and theres more
180 - 145 = 35
180 - 80 - 35 = 65
x = 65
Heeeelp me Asp need this
Answer:
False; True; True
Step-by-step explanation:
If the radius is 4, the area of the circle is
pi*r*r = pi * 4 * 4 = 16pi; The second statement is true.
The entire circle's "angle" is 2pi, so the sector takes (2pi/3) / 2pi of it all, equal to 1/3 of the entire circle - hence the area of the sector is
16pi * 1/3 = 16pi/3; the first statement is false
The length of the entire circle is 2 * pi * r = 2 * pi * 4 = 8pi
The sector is 1/3 of that, so 8pi/3; the third statement is true.
El costo de un teléfono celular con un descuento del 30% sobre el precio de lista, está dado por p(x)= x-0.30x. El impuesto a pagar por un artículo que cuesta x pesos está dado por i(x)= 0.15x.
a) Hallar e interpretar i(p(x))
b) ¿cuánto pagarás por un teléfono cuyo precio de lista es de $1,200?
Help! The screenshot is down below!!
Answer:
Step-by-step explanation:
A) Find the total minutes that Anna walked.To find the average number of minutes, divide the total minutes by total number of days
B) Average number of minutes =
[tex]\frac{15*9 + 30*5 + 40*7 + 45*3 + 50*6}{30}\\\\= \frac{135 + 150 + 280 + 135 + 300}{30}\\\\=\frac{1000}{30}\\\\= 33. 33[/tex]
The sculpture consists of four identical prisms. Jane says the surface area of the sculpture is 4 times the surface area of one prism. Which statement about jane's method is true?
Options:
A.) Jane should multiply volumes, not areas.
B.) Jane should also subtract the areas of six hidden surfaces.
C.) Jane should also add the areas of six hidden surfaces.
D.) Jane is correct.
Answer:
B.) Jane should also subtract the areas of six hidden surfaces.
Step-by-step explanation:
When three-dimensional solids are joined together to form a solid, some surfaces will be visible while others won't.
When calculating the surface areas of such shapes, we only consider the visible parts (i.e. the areas of the hidden parts will be subtracted from the total areas of the individual shapes).
Since the sculpture is not attached to this question, we can assume that there are 6 hidden surfaces (as suggested by the options). The areas of these 6 hidden surfaces must be subtracted to get the actual surface area.
Answer:
Jane should also subtract the areas of six hidden surfaces.
Step-by-step explanation:
I just did it on Imagine Math
how long does it take to go and come from a kroger because my dad went to go get baby formula for me and im now 13 should i be worried orrr....
Someone please help me in this I don’t know it I don’t wanna fail please...I’m so bad at math
Answer: C
Step-by-step explanation:
In 2 games the team had zero runs
In 1 game the team had one run
In 1 game the team had two runs
In 3 games the team had three runs
In 2 games the team had four runs
In 1 game the team had five runs
can sum1 please help wit dis look at pic
Question 1
1.1
The difference between two numbers is 308328.If the smaller number is
6524, what is the larger number?
-(2) maths
Answer:
Let get small number is x and large number is y.
The difference between two numbers is 308328.
ie. y- x = 308328.
If the smaller number is
6524.
So, x= 6524.
Hence,
y - x = 308328
y- 6524 = 308328
y = 308328 + 6524
y = 314852
Step-by-step explanation:
At an ice cream social, 56 people ordered chocolate ice cream while 32 people ordered vanilla
ice cream.
(a) What is the ratio of the number of people
who ordered chocolate to the number of
people who ordered vanilla in simplest
terms?
(b) At a different event, 42 people bought
chocolate and 30 bought vanilla. Does
this event have the same
chocolate to vanilla purchases as the ice
cream social from (a)? Justify.
ratio of
The distance on a map is 3 centimeters. Find the actual distance if the scale on the map is 1 cm = 30
miles.
Answer:
90 miles
Step-by-step explanation:
Answer:
90 Miles
3 × 30 = 90
By multiplying the 3 centimeters by 30, you get 90 miles
15 POINTS PLEASE HELP!!
Quadrilateral ABCD with vertices A(-1, 0), B(3, 3), C(6, -1) and D(x, -y). If vertices ABCD forms a square, find the length of diagonal BD. Round your answer to the nearest hundredth.
Answer:
7.07
Step-by-step explanation:
Find vertices D with desmos (it's 2,-4).
Use the distance formula or diagonal=a√2 (d=5√2)
Multiply them and get 7.07.
Since the vertices forms a square, all sides are the same length which is 5.
Also you bca kid rt?
In ΔIJK, j = 800 cm, k = 240 cm and ∠I=173°. Find the area of ΔIJK, to the nearest square centimeter.
Answer:
11699 square centimeters
Step-by-step explanation:
In ΔIJK, j = 800 cm, k = 240 cm and ∠I=173°. Find the area of ΔIJK, to the nearest square centimeter.
When given two sides of a triangle and an angle, the area of the triangle is calculated as:
1/2jksintheta
theta = 173°
Hence:
Area of triangle =
1/2 × 800 × 240 × sin 173
= 11699.456967 square centimeters
Approximately = 11699 square centimeters
m bought a watch at Rs.10000 and sold it f
-12000. Find his profit percent.
[Ans: 209
• चामल र 2 kg दालको मूल्य रु. 490 पर्छ । यदि
लको मूल्य रु. 70 भए, lkg दालको मूल्य निकाल्नुहो
• cost of kg of rice and 2 kg of pulse is Rs.49
price of lkg of rice is Rs.70, find the price of
ulse.
[Ans: Rs
रुपैयाँको 4 वर्षमा 15% प्रतिवर्षको व्याजदरले मि
Answer:
2% sjjdjdjjdjjdjdjdjjrjir
Select all the equations that have no solution and state your reasoning as of "why" they do not have a solution. +6=5+ x+6=5+x −2(−3)=-2+6 −2(x−3)=-2x+6 4−4=3+2 4−4x=3x+2 4(+1)=3(+2) 4(x+1)=3(x+2) 5−3=-3+4 5−3x=-3x+4
Equations:
[tex]x+6=5+x[/tex]
[tex]-2(x-3)=-2x+6[/tex]
[tex]4-4x=3x+2[/tex]
[tex]4(x+1)=3(x+2)[/tex]
[tex]5-3x=-3x+4[/tex]
Answer:
[tex]x+6=5+x[/tex]
[tex]5-3x=-3x+4[/tex]
Step-by-step explanation:
Given
[tex]x+6=5+x[/tex]
[tex]-2(x-3)=-2x+6[/tex]
[tex]4-4x=3x+2[/tex]
[tex]4(x+1)=3(x+2)[/tex]
[tex]5-3x=-3x+4[/tex]
Required:
Which have no solution
[tex]x+6=5+x[/tex]
Subtract x from both sides
[tex]x -x+6 = 5 + x - x[/tex]
[tex]6 = 5[/tex]
[tex]x+6=5+x[/tex] has no solution because [tex]6 \ne 5[/tex]
[tex]-2(x-3)=-2x+6[/tex]
Open bracket
[tex]-2x + 6 = -2x + 6[/tex]
Both sides are equal.
Hence, there is an [tex]Infinite\ Number[/tex] of Solutions
[tex]4-4x=3x+2[/tex]
Collect like terms
[tex]-3x - 4x = 2 - 4[/tex]
[tex]-7x = -2[/tex]
Solve for x
[tex]x = \frac{-2}{-7}[/tex]
[tex]x = \frac{2}{7}[/tex] --- This has a solution
[tex]4(x+1)=3(x+2)[/tex]
Open brackets
[tex]4x + 4 = 3x + 6[/tex]
Collect like terms
[tex]4x-3x = 6 - 4[/tex]
[tex]x = 2[/tex] --- This has a solution
[tex]5-3x=-3x+4[/tex]
Add 3x to both sides
[tex]5 - 3x + 3x = -3x + 3x + 4[/tex]
[tex]5 = 4[/tex]
[tex]5-3x=-3x+4[/tex] has no solution because [tex]5 \ne 4[/tex]
help me pleaseee, right answers xxo
Answer:
1. C - Directly Proportional Graph
2. D - Square Root Graph (I don't know, I just eliminated it from all the other options xD)
3. A - Exponential Graph
4. B - Reciprocal Graph
Which of these cannot represent the lengths of the sides of a right triangle?
03 ft, 4 ft, 5 ft
O 6 in., 8 in., 10 in.
O 16 cm, 63 cm, 65 cm
O8 m. 9 m, 10 m
Answer:
16 cm, 63 cm, 65 cm
Step-by-step explanation:
Because those side lengths are to big to make a right triangle
6TH GRADE MATH HELP ME PLSS IM SUPER LOSTTT!!! 26 people bought fishes in all and 22 people bought up to 4 fishes and 4 people bought more than 4 fishes.
What fraction of the customers purchased fewer than 4 fish? Write your answer in simplest form.
Answer:
I think you're just supposed to multiply so i think the answer is 15
Step-by-step explanation:
Can someone tell me how to do this? This is so confusing to me.
Answer:
A. Rate of Change: 25/1
B. Initial Value: 100
C. Y=25x+100
D. After 6 months the cost is 250$
E. 475=25x+100
475=25x+100
375=25x
x=15
So E. is 15 months
Step-by-step explanation:
Vivian is ordering carpet for 16 square rooms in a hotel each room we need 100 square feet of carpet what is the length of one room
Answer:
Step-by-step explanation:
Length of one room, 30cm
simplify polynomials 11x⁴+3x²-10+2x³-3x⁴+9
Kevin started the number pattern shown below using the rule "start with 1, multiply the previous number by 3 then add 2 to the result to get the next number." 1, 5, 17, …… What is the fifth number in her pattern?
Answer: 161
Step-by-step explanation:
From the question, the rule is that we start with 1, multiply the previous number by 3 then add 2 to the result to get the next number.
Based on the numbers already given such as 1, 5, 17, the 4th number will be:
= (17 × 3) + 2
= 51 + 2
= 53
The 5th number will be:
= (53 × 3) + 2
= 159 + 2
= 161
In Chicago, Illinois, the temperature was -14°F in the morning. If the
temperature dropped 6°F, what would the temperature be?
Answer: -20 degrees Fahrenheit. plz mark me brainliest
Step-by-step explanation: -14-6=20 so -20 degrees Fahrenheit. plz mark me brainliest.
How to mark brainliest:
Click/Tap the crown on the bottom right of an answer, if there is no crown reload the page. There has to be 2 answers to mark brainliest. plz mark me brainliest.