Step-by-step explanation:
let no of motorcycles be m and no of cars be c
4c + 2m = 124 --(1)
c + m = 39
c = 39 - m --(2)
sub (2) into (1):
4(39 - m) + 2m = 124
156 - 2m = 124
2m = 32
m = 16
therefore, c = 23
23 cars
Topic: simultaneous eqn + forming algebraic equations
If you like to venture further, do check out my insta (learntionary) where I constantly post math tips! Thanks!
7. Plx is greater than 7, x> 7)
Answer:
I think 7 is the answer
hope it helps
what is the x intercept of the line
Answer:
Hey man! Please upload a picture of your line and I'll hapily find the x intercept. If you can't the way to find an x intercept is to see where the x is zero and find what the y is so (0,y)
what's is the difference of -1/2 and 2/5
Answer:
-9/10
Step-by-step explanation:
Answer:
Step-by-step explanation:
I think -9/10
what is the cost of making one burrito (remember that cost is negative)
Answer:
$550
Step-by-step explanation:
How much is the profit for 1 burrito?: $8 - ($1.50+$1) = $5.5
So, profit for 100 burritos is $5.5 x 100 = $550.
Bill makes $30.00 per day. He makes twice as much as hack makes before jacks salary was doubled. How much does jack make now?
Answer:
$30.00
Step-by-step explanation:
Jack's original salary before it was doubled was $15.00 per day.
Let's assume Jack's original salary is "x" dollars per day.
According to the given information, Bill makes $30.00 per day, which is twice as much as Jack made before his salary was doubled. So, before Jack's salary was doubled, he made "x" dollars per day.
After Jack's salary was doubled, he makes 2 * x = 2x dollars per day.
Now, we know that Bill makes $30.00 per day, which is equivalent to the new salary of Jack after it was doubled.
So, we can set up an equation:
2x = $30.00
To find the value of "x," we can divide both sides by 2:
x = $30.00 / 2
x = $15.00
Therefore, Jack's original salary before it was doubled was $15.00 per day.
To know more about Multiplication here:
https://brainly.com/question/24327271?
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A professor wants to award prizes for 1st, 2nd, 3rd, 4th and 5th in the class of 30. In how many ways can the prizes be awarded (assume no two students tie)
Answer:
[tex]Selection = 17100720\ ways[/tex]
Step-by-step explanation:
Given
[tex]Students = 30[/tex]
[tex]Positions = 5[/tex] i.e. first to fifth
Required
Determine number of selection
1st position = Any of the 30 students
2nd position = Any of the 29 students
3rd position = Any of the 28 students
4th position = Any of the 27 students
5th position = Any of the 26 students
Number of selection is then calculated as:
[tex]Selection = 30 * 29 * 28 * 27 * 26[/tex]
[tex]Selection = 17100720\ ways[/tex]
Many adults owe money from their college loans for years into their professional careers. A newspaper would like to estimate the proportion of all adults in the city who have debts from college loans. To collect data, a random sample of 300 young adults between the ages of 25 and 35 is asked, "Do you have more than $5,000 in current college debts?” 68% of those sampled reported that they do have more than $5,000 in college-related debts. How might this sample be biased in obtaining an estimate of all adults in the city who have college debts? Because young adults were randomly selected, this sample should provide an unbiased estimate of the proportion of adults with college debts. Because only young adults were sampled, undercoverage bias may cause the newspaper to overestimate the proportion of all adults who have college debts. Because some young adults may not honestly report their debts, response bias may cause the newspaper to underestimate the proportion of adults with college debts. Because adults with college debts may be less likely to respond, voluntary response bias may cause the newspaper to underestimate the proportion of adults who have college debts.
Answer: B: because young adults were sampled, undercoverage bias may cause the newspaper to overestimate the proportion of all adults who have college debts
Step-by-step explanation: the question is asking how the sample could be biased and obtaining an estimate of all ADULTS in the city. Young adults aren't the only adults. Adults can be older than 35 too so it's not a good representation of every adult in the city
Answer:
B- Because only young adults were sampled, undercoverage bias may cause the newspaper to overestimate the proportion of all adults who have college debts.
Step-by-step explanation:
Got it right
edgen 2022
Solve this Literal Equation
Solve for x
E=[tex]\frac{ab}{x^2}[/tex]
Let sets A and B be defined as follows.
A is the set of integers greater than - 7 and less than - 3
B={c, h, j, k, v, y}
(a) Find the cardinalities of A and B.
n(A) = ? n(B)= ?
(b) Select true or false.
True
False
-6E A
-14 EA
k E B
Q E B
The E is the signal used not the actual letter E
Answer:
n(A) = 3
n(B) = 6
-6 ∈ A => True
-14 ∈ A => False
k ∈ B=> True
Q∈B = >False
Step-by-step explanation:
Given
A is the set of integers greater than - 7 and less than - 3
B={c, h, j, k, v, y}
For set A:
The integers greater than -7 will be -6,-5 ....
As the set has integers less than -3, the set will be:
[tex]A = \{-6,-5,-4\}[/tex]
Cardinalities:
Cardinality is the number of elements in the set.
So,
[tex]n(A) = 3\\n(B) = 6[/tex]
Now for the statements:
-6 ∈ A True as -6 is a member of set A
-14 ∈ A False as -14 is not a member of A
k ∈ B True
Q∈B False
Hence,
n(A) = 3
n(B) = 6
-6 ∈ A => True
-14 ∈ A => False
k ∈ B=> True
Q∈B = >False
WHICH IS EQUIVALENT TO A divided by 2
2A
1/2 A
2/A
A/2
Convert the measurement. 5 days = sec
Answer:
5days = ? sorry I don't understand sorry
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Every day has 24 hours .
Every hour has 60 minutes .
Every minute has 60 seconds.
Thus ;
[tex]5 \times 24 \times 60 \times 60 = 120 \times 60 \times 60 = \\ [/tex]
[tex]2 \times 60 \times 60 \times 60 = [/tex]
[tex]2 \times {6}^{3} \times {10}^{3} = [/tex]
[tex]2 \times 216 \times 1000 = [/tex]
[tex]432 \times 1000 = [/tex]
[tex]432,000 \: \: \: seconds[/tex]
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Find the height of a triangle whose
Area=64dm
Base=1.6m
Answer:
102.4?
Step-by-step explanation:
Answer:
h=2A/b
2 (64dm)/1.6m
128dm/1.6m
=80d
f(x)=x2−2x−4 and g(x)=45x−2
Select all answer choices that best represent solutions to the equation f(x)=g(x).
A. x=3.4
B. x=−0.6
C. x=−1.2
D. x=2.5
E. x=−1.9
Answer:
x=3.4 and x=2.5
Step-by-step explanation:
i took an exam and got it right
Mr. Earl E. Bird leaves his house for work at exactly 8:00 a.m. every morning. When
he averages 40 miles per hour, he arrives at his workplace three minutes late. When
he averages 60 miles per hour, he arrives three minutes early.
Answer:
50 miles per hour
Step-by-step explanation:
if 40 makes him 30 mins late and 60 makes him 30 mins early then it only would make since that in between both 40 and 60 is 50 and that would make him go on time
*i had trouble wording that so yeah sorry about that*
Area of parallelogram is 60cm if the length of two adjacent side are 12 and 10 cm respectively find its diagonal
Answer: go to my page and get your points back but get the app socrative is way better than brainly please it helps and save time then comeback and tell me how you like it just want to help I am leaving brainly because socrative is way better
Step-by-step explanation:
Carmen measured her purple pen and found it was 14.724 cm long. What is the length of the purple pen rounded to the nearest hundredth
Answer:14.73 your welcome
1) Find the interior angle sum of a 36-gon.
6120°
720°
900°
1800º
Sum of interior angles = ( number of sides -2) x 180 degrees.
Sum = (36-2) x 180
Sum = 34 x 180
Sum = 6,120 degrees.
Please hurry and help me I give a brainiest!
Answer:
7/8
Step-by-step explanation:
87.5% is equal to 875/1000
by dividing by 5 a couple times
175/200
35/40
7/8
Answer:
7/8 is the answer for this particular question
NEED HELP PLZ 45 POINTS
Is there enough information to prove that the triangles are congruent?
If yes, provide the correct Triangle Congruence Postulate or Theorem and a congruence statement.
If no, justify your answer.
Answer:
angle QRP and TRS are congruent because they are vertical angles.
if you add that then you will get ASA which proves congruency
Step-by-step explanation:
Noise levels at 4volcanoes were measured in decibels yielding the following data:152,157,157,158Construct the 90%confidence interval for the mean noise level at such locations. Assume the population is approximately normal.Step 3 of 4:Find the critical value that should be used in constructing the confidence interval. Round your answer to three decimal places.
Answer:
t critical = 2.353
CI = (152.82 , 159.18)
Step-by-step explanation:
We are required to find the t critical value and also confidence interval
The sample mean is = 152+157+157+158/4
= 156
The standard deviation is 2.7
At a confidence level of 90%, we have α = 1 - 0.90 = 0.1
α/2 = 0.1/2 = 0.05.
Degree of freedom = 4-1 = 3
When we look this up in the t critical value table,
t critical = 2.353
Next we have to find the confidence interval
CI = (156 - 2.3530 x 2.7/√4 , 156 + 2.353 x 2.7/√4)
= 156-3.17655, 156+3.17655
CI = (152.82 , 159.18)
Upper bound = 159.18
Lower bound = 152.82
Solve for X.
8=5
X 9
Answer: x = 14.4
Step-by-step explanation:
Answer:
x = 14.4Step-by-step explanation:
8/x = 5/9 just cross multiply
5x = 8(9)
x = 72/5 divide 5 both sides
x = 14.4
The length of a rectangle is four times its width. Twice the perimeter of that rectangle is 160 cm. Find
the length and width of that rectangle. pls answer fast
Answer:
Step-by-step explanation:
Given twice the perimeter of rectangle =160
Let width of the rectangle=X
So length of the rectangle =4x
2(perimeter of rectangle)=160
2[2(length+width)]=160
4(4x+x)=160
5x=160/4
5x=40
X=40/8
X=5cm
So length of the rectangle =4x
=20cm
Width of the rectangle =X
=5cm.
Length = 4*5 = 20 cm
Width. = 4 cm.
4.) At an ice cream shop the ratio of chocolate ice cream cones to vanilla ice cream
cones sold is 5 to 3. Using this ratio, if 25 chocolate ice cream cones are sold in a
day, how many vanilla were sold that same day. Draw, label and use a tape diagram or
other method that you've been taught to solve. Write your answer in sentence
form.(2pt)
Answer:
15 vanilla ice cream cones were sold.
Step-by-step explanation:
Answer:
b
Step-by-step explanation:
Which expression is equivalent to (7x^2)(3x^-4)
A. 21X ^-8
B. 21X^2
C. 21X^-6
D. 21X ^-2
Answer:
the answer is b
Step-by-step explanation:
heres why:
(7x^2)(3x^-4)
7x3=21x
21/x^4
21/x²
Jerry read a 200 page book in 10 hours. At that rate, how long will it take him to read a 320 page book?
16 hours
18 hours
24 hours
32 hours
A model of a park was built on a scale of 1.5 cm to 50 m. If the distance between two trees in the park is 150m, what is this distance on the model? *
0.5 cm
4.5 cm
75 cm
225 cm
The practice range at a golf course charges $4.00 for a bucket of 40 golf balls. At this rate, how much will a bucket of 100 golf balls cost? *
$10.00
$10.50
$13.50
$16.00
Step-by-step explanation:
1. 200 = 10h
320 =
320x10 / 200
= 16h
2. 1.5 = 50m
x = 150 m
150x1.5 / 50
= 4.5cm
3. 4$ = 40balls
x = 100balls
100x4 / 40
= $10
Which recursive formula can be used to generate the sequence shown, where f(1) = 5 and n > 1? 5,–1, –7, –13, –19,
Answer:
sorry not having idea about the answer
Answer:
Hello,
f(n)=f(n-1)+6
Step-by-step explanation:
Given the function f(x)=3(x+2)-4, solve for the inverse function when x=2.
A) -4
B) 0
C) 4
D) 8
Answer:
Maybe the Answer will be Zero
0
Which of the following is the fastest unit rate ( 1 mile = 1,760 yards = 5,280 feet)
A. 30 miles per hour
B. 40 feet per second
C. 700 yards per minute
D. 2,200 feet per minute
Answer:
A. 30 miles per hour
Step-by-step explanation:
If you divide 5,280 feet by 1,760, you get a quotient of 3. Then you multiply 10 times 3 to get 30 miles.
Answer:
a
Step-by-step explanation:
M=3 (-4,-7) PLease include steps!!( I will give brainliest)
Answer:
65
Step-by-step explanation:
Answer:
65
Step-by-step explanation:
A new cell phone has a purchase price of $225. With the extended warranty, the total cost comes to $289. What
percent of the purchase price is the price of the warranty?
a. 28%
b. 22%
C. 25%
d. 20%
Answer:
The answer would be Letter A which is 28%
Step-by-step explanation:
Took the practice on edge 2020 and got it correct.
