Answer
3.5 hours
Step-by-step explanation:
Let us represent
The time spent walking as x
The time spent riding as y
Jim began a 146-mile bicycle trip to build up stamina for a triathlete competition. Unfortunately, his bicycle chain broke, so he finished the trip walking. The whole trip took 5 hours.
Hence:
x + y = 5.... Equation 1
x = 5 - y
If Jim walks at a rate of 4 miles per hour and rides at 40 miles per hour,
The formula for Distance = Speed × time. Hence,
4 × x + 40 × y = 146 miles
4x + 40y = 146.... Equation 2
We substitute 5 - y for x in Equation 2
4(5 - y) + 40y = 146
20 - 4y + 40y = 146
Subtract 20 from both sides
20 - 20 - 4y + 40y = 146 - 20
- 4y + 40y = 146 - 20
36y = 126
y = 126/36
y = 3.5 hours
Since the time he spent raiding his bicycle is represented by "y", the amount of time he spent on the bicycle is 3.5 hours
I think this is right I had this question I think it was the same one I dont know tho
What is the value of mc015-1.jp g?
Answer:
I dont know
Step-by-step explanation:
Answer:
1456
Step-by-step explanation:
This question is asking us to find the sum of [tex]4(3)^{n-1}[/tex] from n = 1 to n = 6. We can find the sum like this:
[tex]4(3)^{1-1} +4(3)^{2-1} +4(3)^{3-1} +4(3)^{4-1} +4(3)^{5-1} +4(3)^{6-1}[/tex]
Which can be simplified to:
[tex]4(3)^{0} +4(3)^{1} +4(3)^{2} +4(3)^{3} +4(3)^{4} +4(3)^{5}[/tex]
[tex]4(1) +4(3) +4(9) +4(27)+4(81) +4(243)[/tex]
[tex]4 +12 +36 +108+324 +972 = 1456[/tex]
Consider the situations.
i. The value of an investment increases by $30 every year.
ii. The value of an investment decreases by 10% every year.
In which situation(s) is (are) the investment(s) changing at a constant rate?
both i and ii
only i
only ii
neither i norii
10 Mrs. Randall bought tickets to the art museum for all the fifth-grade students. Each ticket cost $12, and the total cost of the tickets was $1,152. How many fifth-grade students are there?
Answer:
Step-by-step explanation:
12s=1152 (divide each side by 12 to isolate s)
s=96
So there were 96 students.
Nutritionists measured the sugar content (in grams) for 32 drinks at Jake's Java
coffee shop. The drinks had a mean sugar content of 18g and a standard
deviation of 5g, and the distribution was roughly symmetric.
Question 1: Grande Mocha Cappuccino at Jake's Java contains 14 g of sugar.
Calculate the standardized score (z-score) for the Grande Mocha Cappuccino.
Answer:
[tex]z = -0.8[/tex]
Step-by-step explanation:
Given
[tex]n = 32[/tex] --- samples
[tex]\mu = 18g[/tex] --- mean
[tex]\sigma =5g[/tex] --- standard deviation
[tex]x = 14g[/tex] --- observed value
Required
Find the standardized score
This is calculated as:
[tex]z = \frac{x - \mu}{\sigma}[/tex]
So:
[tex]z = \frac{14g -18g}{5g}[/tex]
[tex]z = \frac{-4g}{5g}[/tex]
[tex]z = \frac{-4}{5}[/tex]
[tex]z = -0.8[/tex]
The standardized score is -0.8
HELP PLEASE DUE IN 4 MINUTES
please help i d don't know i would really appreciate your help
Answer:
45
Step-by-step explanation:
hello there!
Remember all of the angles in a triangle will add up to equal 180 so to find the missing angle we subtract the given angles from 180
180 - 90 - 45 = 45 so the missing angle would equal 45
Can someone help me with this I’m really bad in geometry
Find Y Round to the nearest tenth.
у
12
25°
I redrew the triangle (just turned it around it make it easier to understand).
name the property that justifies each statement -3(m+8)=-3m-24
Answer: Distributive Property
Explanation: The distributive property tells us that if we're given an expression such as -3(m + 8), we can multiply the -3 by both the m and the 8.
Mr. Anderson made the following box-and-whisker graph of the quiz grades in his chemistry class.
What is the median quiz grade for the class?
Answer Choices
A. 86
B. 70
C. 96
D. 77
Answer:
77
Step-by-step explanation:
I did the question and I got it correct.
True or false?is the point(16,4) included in this function: Y=2x or Y=x2 or y= x+12 or y=x-12
Answer:
True
Step-by-step explanation:
It is true because the graph of [tex]y=x-12[/tex] passes through the point [tex](16,4)[/tex]
x = 16
y = 4
Substitute
4 = 16 - 12
4 = 4
Therefore, the answer is true.
5. How much force is needed to stop a 1,400 kg truck pulling up to a stop light if
the truck took 4 seconds to stop and was moving at 36 m/s?
Answer:
Step-by-step explanation:
F=ma
F=m(dv/dt)
F=1400(-36/4)
F=-12600N (the negative sign just means the force was slowing the vehicle, the magnitude of the force is just the absolute value.
F=12600N
These are numbers that cannot be written as fractions, numbers with decimals that do not end or repeat. Example: π, 2.345643.....,
Answer:
These types of numbers are commonly referred to as "irrational numbers".
Step-by-step explanation:
. 3^2x+1 = 1 solve it
Answer:
x= 0
Step-by-step explanation:
HOW DO I SLOVE THIS MATH PROBLEM!!! I need an explanation
Answer:
441 π ft²
Step-by-step explanation:
If you mean volume, this is how it is:
v = πr² × h = π × 7² × 9 = 441π ≈ 1323 ft²
please help me find the value of H and A
what is the answer to y+5<9
Answer:
I think the answer would be y<4
Which expression is equivalent to (3^2)^-2
?
Answer:
I think the answer is 2\9
Step-by-step explanation:
Monica is paid $11.50 per hour in addition to a $70.00 fuel stipend. This week she would like to earn more than $ 440.00 . How many hours must Monica work this week ? Round to the nearest tenth of an hour
Answer:
Step-by-step explanation:
70+11.5x>440 subtract 70 from each side
11.5x>370 divide each side by 11.5
x>32.17 to nearest tenth
x>32.2
Solve for x using cross multiplication 3x - 3 5 = 2x – 2 4 x = [?]
Answer:
x = -35/22, or 1.5909090...
Step-by-step explanation:
Solving for x will be easy enough, but cross multiplication won't be necessary as that's only applicable when division is involved:
35 = 2x - 24x
35 = -22x
x = -35/22, or 1.5909090...
4/7 of 29= (estimate each product)
Answer:
16.6 for nearest tenths
16.57 for nearest hundreths
Step-by-step explanation:
4/7*29/1=
29*7=203/7 to get the same denominator
203 x 4 = 812 mulptiply to get the fraction
7 x 7 = 49
812/49=16.5714285714
Please help I’m struggling
Answer:
x = -4
Step-by-step explanation:
x= 3 is a parallel to y axis. So a parallel line to x = 3 must be parallel to y axis.
A line parallel to y axis has a generic equation: x = h. We know that the line passes to the point with has x coordinate = -4
So the equation is x= -4
plsss help me answer this question !!!!
Answer:
what's your question???
if 4x=60 what is the value of x?
Step-by-step explanation:
if 4x = 60
Then
x = 60 / 4
x = 15
Hope it will help :)❤
HELP please correct answer please mathematics
Answer:
96 units^2
Step-by-step explanation:
(8*24)/2=96
In a class of students, the following data table summarizes how many students have a
brother or a sister. What is the probability that a student chosen randomly from the
class is an only child?
Answer:
your answer will be
2 and 1/12
Step-by-step explanation:
hope it helps you
have a great day!!
8.3 (repeating) percent or 2 out 24 children
If the triangle below is enlarged by a scale factor of 1.2, what will be the area of the new triangle?
Answer:
Step-by-step explanation:
A=bh/2
A=(1.2b)(1.2h)/2
A=1.44(bh)/2
A=0.72bh
b=10cm and h=5c
A=0.72(10)(5)
A=36 cm^2
Answer:
36cm sqaured
Step-by-step explanation:
Step-by-step explanation:
A=bh/2
A=(1.2b)(1.2h)/2
A=1.44(bh)/2
A=0.72bh
b=10cm and h=5c
A=0.72(10)(5)
A=36 cm^2
What is the perimeter and area of the composite figure?
Step-by-step explanation:
▪AB = AC - EF
= 13 cm - 7 cm
= 6 cm
▪BD = CF - DE
= 16 - 8 cm
= 8 cm
BC = EF
perimeter = CF + EF + DE + AD + AB + BC
= 16 + 7 + 8 + 10 + 6 + 7
= 54 cm
Area of triangles = 1/2 × AB × BD
= 1/2 × 6 × 8
= 48/2
= 24 cm²
Area of rectangle = CF × EF
= 16 × 7
= 112 cm²
the total area = 24 + 112
= 136 cm²
#CMIIW
https://cantonschools.instructure.com/courses/1278/discussion_topics/14354
Is 12+5(2+y) and 5y+22 equivalent
Answer:
22 + 5y
Step-by-step explanation:
Yes they are
5 x 2 = 10 + 5 x y = 5y, 10 + 12 = 22, therefore you get 22 + 5y.
I had to raise the number to49 pls help