The average mark scores by 29 students in a science test was 56%. Jessica was sick, so she sat the
test later and scored 71%. Including Jessica's score, what was the new value of the mean mark?
Answer:
56.5%
[tex] \frac{29 \times 56 + 71}{30 \times 100} = 0.565 = 56.5\%[/tex]
The cost of 2 tables and 3 chairs is $705. If the table costs $40 more than the chair, how much does a table cost?
Answer:
Step-by-step explanation:
2 tables and 3 chairs is $705
Let t stand for table and c stand for chair
3c + 2t = 705
We are told that the table costs $40 more than the chair, so t = c + 40
Now we can insert this into the equation
3c + 2(c + 40) = 705
The next step is to distribute the 2
3c + 2c + 80 = 705
Then combine like terms
5c + 80 = 705
To get the variable by itself, you have to subtract the 80 from both sides.
5c = 705 - 80
5c = 625
This means that 5 chairs costs $625.
Divided both sides by 5 to isolate the variable
c = 625/5
c = 125
Great, now you know the cost of one chair, $125!
The question is asking how much a table costs, and we know that a table costs $40 more than a chair.
A table costs $125 + $40
A table costs $165
Hope this helps! =)
Order of operations question
Answer:
165 po ang sagot
Kung Hindi po tama sorry
I try my best
Help please i need to know this
Answer:
As shown in the attachment,
Step-by-step explanation:
BOWLING A bowling alley charges a flat fee to rent shoes. There is an additional fee for each game played. The function y = 3.5x +4
represents the cost y of bowling games. Interpret the parameters of the function.
represents the price per game
$
represents the shoe rental charge.
The parameters of a linear function are the slope, and the intercepts.
3.5 represents the price per game4 represents the shoe rental chargeA linear function is represented as:
[tex]\mathbf{y = mx + b}[/tex]
Where:
m represents the slope or the rates
b represents the y intercept or the initial value of the function.
So, by comparison:
[tex]\mathbf{m = 3.5}[/tex]
[tex]\mathbf{b = 4}[/tex]
So, we have:
The price per game is 3.5 (i.e. the slope), and the shoe rental charge is 3.5 (i.e. the y-intercept)
Read more about function parameters at:
https://brainly.com/question/18672496
the ratio of yellow balls to green balls in a a bag is 4:2
what faction of the balls are yellow?
Answer: for every 1 green ball there is 2 yellow balls so 75% yellow 25% green I think unless I’m wrong which I wouldn’t be surprised
Step-by-step explanation:
Two more than a number is the same as 16 decreased by 6 times the number. Find the number.
Answer:
X+2=16-6x
X=14-6x
Add 6x on both sides.
7x=14
Divide both sides by 7.
X=2
starts at 12 and ends at 6
Answer:
126
Step-by-step explanation:
i don't know if it's correct or not
An airplane on autopilot took 5 hours to travel 3,590 kilometers. What is the unit rate for kilometers per hour?
Answer:
695 km per hour
Step-by-step explanation:
en una reunión de 162 alumnos había 15 hombres mas que 6 veces las mujeres ¿cuantos hombres y cuantas mujeres habra?
This shows that there are 141 men and 21 women in the meeting
Let the number of men present be x
Let the number of women present be y
If the total number of students present in the meeting is 162, hence;
x + y = 162 ............ 1
If there were 15 men more than 6 times the women, then;
x = 6y + 15 ...................2
Substitute equation 2 into 1:
6y + 15 + y = 162
7y + 15 = 162
7y = 162 - 15
7y = 147
y = 21
Recall that x = 6y + 15
x = 6(21) + 15
x = 126 + 15
x = 141
This shows that there are 141 men and 21 women in the meeting
Learn more here: https://brainly.com/question/13805464
WILL MARK BRAINLIEST
Answer:
26
Step-by-step explanation:
3³ is basically 3×3×3 which equals to 27
1² is 1×1 which obviously is 1 lol
so,
27 - 1
= 26
Answer: 3*3*3 - 1*1 = 26
Step-by-step explanation:
Bertha read 21 books. Each book had 155 pages. How many pages did she read altogether? 465 pages
3,155 pages
3,355 pages
3,255 pages
Answer:
3,255 pages
Step-by-step explanation:
multiply 155 by 21
A pack of $2.99 crayons is on sale 50% off what is the discount?
Answer:
$1.49
Step-by-step explanation:
Take your value: $.99 and since it is 50% off, divide it by 2.
You get $1.49.
lee Hoskins: Attempt 1
A tennis racket with a price of $180 is subject to a sales tax of 7%. What is the total
price of the racket?
$192.60
$187
Determine if the following are true or false statements.
- If it is below 32° outside, then it is snowing. T or F
- If m∠2=25°, then it is an acute angle. T or F
- If two angles are supplementary, then they add up to 180°. T or F
- If two angles are complementary, then they are both 45° T or F
Answer:
1. T
2. T
3. T
4. F
Step-by-step explanation:
1. The tempature must be 0 degrees celcus or 32 degrees fahrenheit or below to snow.
2. An acute angle is less than 90 degrees
3. Supplementary angles are 2 angles that add up to 180.
4. Complementary angles are any 2 angles that add up to 90 degrees BUT they do not have to be only 45 degrees and can be any 2 degrees that add up to 90.
Two numbers have a sum of 32. One number is 6 more than the other. Find the numbers
Let the bigger number be 'U' and the smaller number 't'.
Since the two numbers have a sum of 32, then U + t = 32.
& since one number is 6 more than the other, the U - 6 = t
⇒ U + U - 6 = 32
2U = 38
U = 19
By substituting fot the value of U we found,
19 - 6 = t
t = 13
∴ the numbers are 13 & 19.Answer:
13 and 19
Step-by-step explanation:
let's first set the two mystery numbers as "x"
and we know that x + (x + 6) = 32 since one of the numbers is 6 more than the other.
now let's set it up:
x + x + 6 = 32
= 2x = 26
= x = 13
so we know that x = 13 now we need to find the other number so we do:
13 + 6 = 19
now to check our work:
13 + 19 = 32
hope that helped :))
PLEASE ANSWER RIGHT NOW HELP ME
Answer:
y - 4 = -5(x + 1)
Step-by-step explanation:
Slope = m = -5
(-1, 4)
y - y1 = m(x - x1)
y - 4 = -5(x - [-1])
y - 4 = -5(x + 1)
In a class of 40 students, 21 like dance, 24 like music and 8 like both the activities. Illustrate it in a Venn - diagram and find the number of students who don't like any of the activity.
Answer:
As follows,
Step-by-step explanation:
A metal strip is being installed around a rectangular workbench that is 8 feet long and 4 feet wide. If the stripping costs $4 per foot, find the total cost of the stripping.
Answer:
$144
Step-by-step explanation:
Length*Width*Price
12*3 = 36
36*4 = 144
$144
i just passed my math test that i had no idea how to do :)
i just felt the need to share that for some reason
have a good day/night/afternoon ^^
As long as you believe in yourself, you can do anything.
Answer:
brruhhh
Step-by-step explanation:
Deriva (x+3)/(x-3)
Ayudis
jhjbStep-by-step explanation:
Andrea drove 20 1/2 miles in 1/3 of an hour at constant speed what was that speed
Answer:
423
Step-by-step explanation:
123423
The constant speed for the given distance and time is 123/2 miles/hour.
Given that, Andrea drove [tex]20\frac{1}{2}[/tex] miles in 1/3 of an hour at constant speed.
What is the speed?The speed formula can be defined as the rate at which an object covers some distance. Speed can be measured as the distance travelled by a body in a given period of time. The SI unit of speed is m/s.
Here, [tex]20\frac{1}{2} = \frac{41}{2}[/tex]
Now, speed = Distance ÷ Time
= 41/2 ÷ 1/3
Change division to multiplication and reciprocal the fraction
That is, 41/2 × 3/1
= 123/2 miles/hour
Therefore, the constant speed for the given distance and time is 123/2 miles/hour.
To learn more about the speed, distance, and time visit:
brainly.com/question/4978052.
#SPJ2
i Square = Square Root -1. True or false
Answering is false I know because I’m smart
PLZZ HELP REALLY QUICK QUICKK QUICKKK HELPP
Answer:
$1.62
Step-by-step explanation:
1. To find how much Erin spent, we have to multiply 0.54 by 3.
[tex]0.54 * 3[/tex] [tex](0.5*3)+(0.04*3)[/tex] [tex]1.5 + 0.12[/tex] [tex]1.62[/tex]Therefore, Erin spent $1.62.
Self explanatory solve porfavor
2(2/5) divided 2(-1/5)
we do PEMDAS meaning parenthesis first
2(2/5) = 4/5(calculator)
or
2/1x2/5=4/5
now
2/1x-1/5=-2/5
now we do division
4/5/-2/5 we get -2
-2
f(x)=5x-1; find f (-2), f (0), and f (x+1)
Answer:
f(-2) = -11
f(0) = -1
f(x+1)= f (x+1)=5x+4
Step-by-step explanation:
x>-1
help please!!!!!
Answer:
but if it was x>1 it would be less equal to
Step-by-step explanation:
x < 1 is greater than
12. The function t = 19m + 65 represents the temperature t (in degrees Fahrenheit)
of an oven after preheating for m minutes.
The temperature in Fahrenheit after preheating for 2 minutes is 103⁰F
The question looks incomplete but we can as well find the temperature in Fahrenheit after preheating for 2 minutes
Give the function t = 19m + 65 that represents the temperature t (in degrees Fahrenheit) of an oven after preheating for m minutes.
If t = 2,
t = 19(2) + 65
t = 38 + 65
t = 103⁰F
Hence the temperature in Fahrenheit after preheating for 2 minutes is 103⁰F
Learn more here:https://brainly.com/question/16510024
Help fasttttt the first correct answer I will give brainliest!!!!
Answer: i belive its 5 1/3 or B
Step-by-step explanation:
sorry if im wrong
Step-by-step explanation:
= ([tex]\frac{8}{3}[/tex])([tex]\frac{4}{3}[/tex])([tex]\frac{3}{2}[/tex]) = [tex]\frac{16}{3}[/tex] or [tex]5\frac{1}{3}[/tex]
please give me a brainliest answer
May I please receive help?
Answer:
1 and 2 are parallel. 1 and 3 are perpendicular. 2 and 3 are perpendicular.
Answer: I'm gonna try my best. 1). neither 2). Parallel 3).perpendicular
Step-by-step explanation: