Answers
-19.5 divided by 3 is -6.5
Related Questions
x+y=1212
x-y=518
please help me with it
Answers
Here,
x+y=1212••••••[tex]\bold{equation~I }[/tex] x-y=518••••••[tex]\bold{equation~II }[/tex]ADDITIONALL,both two equation.
we get that,
x+y+x-y=1212+5182x=1730x=865so,
x-y=518865-y=518y=860-518y=347PLEASE HELP ME!!!
Tim is sorting his book collection into groups. He places each group onto bookshelves that can each hold a maximum of 25 pounds. His collection includes hardcover books that weigh 3 pounds each and softcover books that weigh 2 pounds each.
Select all of the possible numbers of hardcover books that could be on one bookshelf.
3
4
8
9
12
Answers
Answer:
3 and 4
Step-by-step explanation:
The number of hardcover books will be 3,4, and 8.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given that Tim is sorting his book collection into groups. He places each group onto bookshelves that can each hold a maximum of 25 pounds. His collection includes hardcover books that weigh 3 pounds each and softcover books that weigh 2 pounds each.
Total weight = 25 pounds
The number of hardcover books which weigh less than 25 pounds is,
3 x 3 pounds = 9 pounds
4 x 3 pounds = 12 pounds
8 x 3 pounds =- 24 pounds
Therefore, the number of hardcover books will be 3,4, and 8.
To know more about an expression follow
https://brainly.com/question/17924756
#SPJ2
Last month a bakery sold a total of 3,500 cookies and cupcakes. They sold cookies for $0.75 each and cupcakes for $2 each. If the total sales last month was $4,500, how many cookies and how many cupcakes did the bakery sell?
Answers
Answer:
Number of cookies sold is 2000 and number of cupcakes sold is 1500
Step-by-step explanation:
Let number of cookies be [tex]x[/tex]
and number of cupcakes be [tex]y[/tex] so
[tex]x+y=3500[/tex]
Cost of one cookie is $0.75
Cost of one cupcake is $2
[tex]0.75x+2y=4500[/tex]
[tex]x+y=3500[/tex] [tex]\times 2[/tex]
[tex]2x+2y=7000[/tex]
[tex]-1.25x=-2500\\\Rightarrow x=\dfrac{2500}{1.25}\\\Rightarrow x=2000[/tex]
[tex]y=3500-x=3500-2000\\\Rightarrow y=1500[/tex]
Number of cookies sold is 2000 and number of cupcakes sold is 1500.
Rosa says 4x and -6x are like terms, so they can be combined. Tiffany says 5a
and 5b are like terms, so they can be combined. Who is correct?
Answers
Answer:
Rosa. 5a and 5b are not like terms. The letters have to be the same
The volume of a cube is 365cm3.
Work out the length of its side rounded to 1 DP.
Answers
Answer:
12.4
Step-by-step explanation:
rounded to 1dp
please mark as brainliest if correct
thank you
Answer:
12.4 is the answer.
Step-by-step explanation:
#CarryOnLearningWILL GIVE BRAINLIEST
Which expressions are difference of squares? Select all correct answers.
x2 + y2
x8 - 4
y2 - 25
x2 + 9
(the numbers next to the x's are exponents, i dont know how to write them on here)
Answers
Answer:
I think is x2-y2 cause the number have to be next to
A 258-inch board is cut into two pieces. One piece is five times the length of the other. Find the length of the shorter piece.
Answers
Answer:
43in
Step-by-step explanation:
Let the length of the pieces be x and y
Since the total length is 258in, then;
x+y = 258... 1
If One piece is five times the length of the other, then x = 5y ....2
Substitute 2 into 1
From 1:
x+y = 258
5y+y = 258
6y = 258
y = 258/6
y = 43
Since x = 258-y
x = 258-43
x = 215
Hence the length of the shorter piece is 43in
Sara has 45 comic books. Each month
her collection of novels triples. Write
an expression that represents the
number of comic books she has, y, as
a function of months, X
Answers
this is because she starts with 45 and it triples every month so is u times 3 by the month number and then multiply that by 45 you’ll get ur answer every month
There are 5 blue, 4 red, 6 magenta, and 3 yellow chips in a bag. One chip is selected at random and then a second is chosen without replacement. Find the probability that the second event will occur.
a) The second was red given that the first was blue.
b) The second was yellow given the first was magenta.
c) The second was green given that the first was red.
d) The second was red given the first was not red.
Answers
Answer:
Step-by-step explanation:
Academy sporting goods store sells two different models of a popular
fitness tracker. In one month the store sold 42 trackers for a total of
$6574. Model A costs $127 and Model B costs $189. How many of
each type of tracker was sold?
please help !! i need this done by today !!!!!! its applying systems and i suck at word problems !!
Answers
Answer:
I SUCK AT WORD PROBLEMS TOOOO LOL
Step-by-step explanation:
What are the coordinates of point P on a directed line segment from R to Q such that P is 5/6 the length of the line segment.
Answers
Answer:
[tex]P = [-3/5,2.33][/tex]
Step-by-step explanation:
Given
See attachment for line segment RQ
[tex]P = \frac{5}{6}[/tex] of RQ
Required
The coordinates of P
Using line segment ratio formula, we have:
[tex]P = [\frac{mx_2 + nx_1}{m+n},\frac{my_2 + ny_1}{m+n}][/tex]
If P is at:
[tex]P = \frac{5}{6}[/tex]
Then:
[tex]m : n = \frac{5}{6} : 1 -\frac{5}{6}[/tex]
Solve
[tex]m : n = \frac{5}{6} : \frac{6-5}{6}[/tex]
[tex]m : n = \frac{5}{6} : \frac{1}{6}[/tex]
Multiply by 6
[tex]m : n = \frac{5}{6} *6: \frac{1}{6} * 6[/tex]
[tex]m : n = 5 : 1[/tex]
By comparison
[tex]m=5\ \& n = 1[/tex]
From the attached line segment
[tex]R(x_1,y_1) = (4,-1)[/tex]
[tex]Q(x_2,y_2) = (-5,3)[/tex]
So, we have:
[tex]P = [\frac{5*-5 + 1*4}{5+1},\frac{5*3 + 1*-1}{5+1}][/tex]
[tex]P = [\frac{-25 + 4}{6},\frac{15 -1}{6}][/tex]
[tex]P = [\frac{-21}{6},\frac{14}{6}][/tex]
[tex]P = [-3/5,2.33][/tex]
100 points / i suck at this
Alison runs a mile in 5 minutes and 50 seconds. Elizabeth runs a mile in 6 minutes and 40 seconds. What is the ratio of Alison's time to Elizabeth's time?
a) 7:8
b) 5.5:6.4
c) 55:64
d) 8:7
Answers
Answer:
7:8
Step-by-step explanation:
First, convert their times to common units. You'll want to put it in seconds:
5 minutes and 50 seconds = 350 seconds
- multiply 5 minutes by 60 to get it into seconds and then add the other 50 seconds to it
- for Elizabeth's time, multiply 6 by 60 seconds and add 40 to it
To get the ratio of their times, divide Alison's time by Elizabeth's time:
350 ÷ 400 = 7:8
Answer:
a) 7:8
Step-by-step explanation:
Alison: 5 minutes and 50 seconds = 355 seconds
Elizabeth: 6 minutes and 40 seconds = 400 seconds
355:400, reduces to 71:80 or 7:8
During math class, Erik draws a circle with a compass. The circle has a radius of 3 inches. What is the circle's diameter?
Answers
Answer: 6 inches
Step-by-step explanation:
The diameter is double the radius
HELPPP If _ABD and ZACD are both right angles, CD = 15, and BD = 4x-9, what is the value
of x?
Answers
Answer:
[tex]x=6[/tex]
Step-by-step explanation:
[tex]BD[/tex]≅[tex]CD[/tex]
[tex]4x-9=15[/tex]
[tex]4x=15+9[/tex]
[tex]4x=24\\[/tex]
[tex]x=6[/tex]
---------------------
hope it helps....
have a great day!!
pleasee help, thank you so much
Answers
Answer:
-2
Step-by-step explanation:
Use the slope formula when given two points
Slope formula = [tex]\frac{y_2-y_1}{x_2-x_1}[/tex]
( the x and y values are determined by the given points )
Given the points ( 0 , 5 ) and ( 1 , 3 )
Plug in the x and y values of the given points into the formula
( remember y values on top x values on bottom )
[tex]slope=\frac{5-3}{0-1} \\5-3=2\\0-1=-1\\slope=\frac{2}{-1} =-2[/tex]
Hence, the answer is D
Triangle theoroms, what is the value of x ?
Answers
Answer:
50.6
Step-by-step explanation:
MA=46.2-14=32.2
We have similar triangles.
That is, triangle MNP is similar to MAB.
This means, we have the following proportion to solve:
32.2/46.2=x/72.6
Multiply both sides by 72.6
32.2/46.2*72.6=x
50.6=x
what is the taxi fare travel Rs.14 in the begining and then after 5 kilometre at the rate of Rs.38 per kilometre
Answers
the taxi fare travel rs.14=2 kilometer
Which is a right triangle formed using a diagonal through the interior of the cube?
triangle ABE
triangle ABD
triangle ADH
triangle ACE
Answers
Answer:
ABE
Step-by-step explanation:
A population of 2200 beetles is too large to sustain and decreases in population each
month at a rate of 5%. How would you write your growth rate, b?
Answers
Answer:
2200-b(5) ?
I'm not 100% but here's my 2 cents
A ski area has a high-speed lift that can move 2,400 skiers to the top of the mountain each hour. Write an expression describing how many skiers can be lifted in ℎ hours. Do not use spaces.
Answers
Answer:
2,400h
Step-by-step explanation:
You multiply the amount of skiers per hour (2,400) by the amount of hours (h).
for mother's day, jen took her mother hiking. they hiked three trails. the arrowhead nature trail is 1 1/5 of a mile, the coquina bay walk is 2/10 of a mile, and the robinson preserve is 4 1/2 of a mile. how far did they hike in all?
Answers
Answer:
5 and 9/10 miles
Step-by-step explanation:
help pls! I will mark u brainliest if its correct. but pls dont put one of those links.. ty
Answers
This is a rectangular prism,
Here length = 16 m
Width = 6 m
Height = 3 m
Surface area of rectangular prism = 2( bl + lh + hb )
Where,
b – base length of the rectangular prism.
l – base width of the rectangular prism.
h – height of the rectangular prism.
Putting these values, surface area = 2(16×6 + 16×3+ 3×6)
= 2( 96+48+18) = 2×162 = 324m
hope you get it well :)
Jonny 3/4 collected of a bag of Mardi Gras beads at each parade he attended. He went to 4
different parades. Which two number sentences would tell the total amount of beads collected?
Answers
Answer:
3
Step-by-step explanation:
River City Middle School has a weekly contest. The prize is a season pass
to the city amusement park. This week's contest is to guess the number
of lemon jellybeans in a jar of 800 jellybeans. Gerald counted in 3
different sections on the outside of the jar. Here are his results:
5 lemon jelly beans out of 30 jellybeans.
4 lemon jelly beans out of 22 jellybeans.
2 lemon jelly beans out of 12 jellybeans.
based on his sampling, how many lemon jellybeans should he guess are in the jar? Show the mathematics you used to support your answer !
PLEASE HELP
Answers
Answer:
150 lemon jellybeans
Step-by-step explanation:
Add the ratios up to get 12 lemon jelly beans out of 64 jellybeans.
[tex]\frac{12}{64} =\frac{x}{800}[/tex]
Cross multiply:
9600 = 64x
---> x = 150 lemon jellybeans
The graph of y = x 2 is changed to y = x 2 - 3. How does this change in the equation affect the graph?
Answers
Answer:
Brings the Line down 3
19. There are 3 roses in a bouquet of assorted flowers. The roses represent 5 15% of the bouquet. How many flowers are in the bouquet? flowers (do not enter label)
Answers
Find the mean of the following numbers.
64, 82, 74, 60
Answers
Answer:
70
Step-by-step explanation:
Simple math Add the numbers and devide by the number of numbers
(64+82+74+60)/4
Answer: 70
Step-by-step explanation:
To find the mean you add the numbers up then divide by how many numbers there are so when you add them up you get 280 and then divide that by 4 which is 70. hope this helps! :')
The box plots below show the distribution of salaries, in thousands, among employees of two small companies.Which measures of center and variability would be best to use when making comparisons of the two data sets?
Answers
Answer:
mean and Interquartile Range (IQR)
Step-by-step explanation:
A ladder is placed against a building so that it reaches 35 feet up the side of the building when its base is 12 feet from the base of the building. How long is the ladder?
Answers
Answer:
35 multiplied by 12
Step-by-step explanation:
Because either you multiply it or you do sohcahtoa
3 metal cubes that sit next to each other have sides of 5 yards are next to each other. How much total stuff can fit into the cubes?
Answers
Answer:
375[tex]yd^{2}[/tex]
Step-by-step explanation: