Answer:
Step-by-step explanation:
7 x 20
4 x 17
8. There are 7 cars for every 5 trucks. If there are 21 cars, how
many trucks are there?
O a) 10
O b) 7
O c)15
O d) 62
Answer:
c)15
Step-by-step explanation:
21 divided by 7 is 3
5 times 3 is 15
Answer:
The answer is 15.
Step-by-step explanation:
that's the answer to me
To ensure that the mass of an average grain of rock salt stays the same, what should you multiply the first factor 1.2 by so that 10 negative 2 becomes 10 negative 4
Answer:
Step-by-step explanation:
[tex]1.2 X 100=120.\\[/tex]
Answer:
The mass of an average grain of rock salt is 1.2 x 10^-2. In part A, you multiplied 10^-2 by 10^-2 to get 10^-4. So, multiply the first factor, 1.2 , by 10^2, or 100.
The first factor will then be 1.2 x 100 = 120.
Step-by-step explanation:
Edmentum answer
if the orginal quantity is 12 and the new qyantity is 15 what is the percent increase
Answer:
25% increase
Step-by-step explanation:
So I would set this up as a proportion
15 x
12 100
So begin by cross multiplying-
15 x 100 = 1500
And then divide
1500/12 = 125
Because 100% is the original, subtract that
Solution of -9=6m+15
Answer:
[tex]m = - 4[/tex]
Step-by-step explanation:
1. subtract 15 from both sides.
[tex] - 9 - 15 = 6m[/tex]
2. Simplify -9-15 to -24.
[tex] - 24 = 6m[/tex]
3. Divide both sides by 6.
[tex] - \frac{24}{6} = m[/tex]
4. Simplify 24/6 to 4.
[tex] - 4 = m[/tex]
5. Switch sides.
[tex]m = - 4[/tex]
Therefor, the answer is , m = -4
Q5. Asif is 5 years younger than Qasim. Four years later, Qasim will be twice as old as
Asif. Find their present ages.
Answer:
Age of Qasim = 6 year
Age of Asif = 1 year
Step-by-step explanation:
Let :
Age of Qasim = x
Age of Asif = x -5
After 4 years there age will be:
Age of Qasim = x+4
Age of Asif = x-5+4 = x-1
We are given: Four years later, Qasim will be twice as old as Asif.
Age of Qasim = 2 (Age of Asif)
x+4=2(x-1)
x+4=2x-2
2x-x=4+2
x=6
So, We get x = 6
The present ages will be:
Age of Qasim = x = 6 year
Age of Asif = x -5 = 6-5 = 1 year
What number makes the equation true?
Answer:
32
Step-by-step explanation:
the denominators are the same, so just add the two fractions on the right and subtract it from the answer on the left.
3500/7+210/7=3710/7
subtract 3710 from 3742
= 32
Is there a proportional relationship between number of sandwiches and the cost of the order? Explain how you know.
(In the picture are my answers so you guys can see them, but what I need to know is if they are proportional or not, and why.)
(20 points)
Answer:
CMER BOOOOOOOOOOOOOOOOOOOOOO
Step-by-step explanation:
There are 77 oranges in each box. How many oranges are in 33 boxes
Answer:
2541
Step-by-step explanation:
77 * 33 = 2541
Answer:
there are 2541 oranges in 33 boxes hope this helps have a nice day please give me brainliest :))
Step-by-step explanation:
A train travels 120 miles in 3 hours. At this same rate, how many miles will it travel in 8 hours?
320 miles
500 miles
450 miles
400 miles
PLEASE HELP
Enter the decimal as a percent.
0.811
Answer:
0.00811%
Step-by-step explanation:
.811/100 = 0.00811%
f(x) = 3r2 + 12x + 5
What is the value of the discriminant of f?
D
How many distinct real number zeros does
f(x) have?
Answer:
The value of the discriminant is 84.
i.e. b²- 4ac = 84
As
b²- 4ac > 0
Therefore, there are two distinct real number zeros.
Step-by-step explanation:
We know that the discriminant of the quadratic equation ax²+bx+c=0 is equal to b²- 4ac.
We also know that:
When b²- 4ac = 0 there is one real root.When b²- 4ac > 0 there are two real roots.When b²- 4ac < 0 there are two complex roots.We are given
f(x) = 3x² + 12x + 5
comparing with the quadratic function ax²+bx+c=0
a = 3, b = 12, c = 5
Discriminant = b²- 4ac
= (12)²-4(3)(5) ∵ a = 3, b = 12, c = 5
= 144 - 60
= 84
Thus, the value of the discriminant is: 84
As
b²- 4ac > 0
Therefore, there are two distinct real number zeros.
About 245 out of 500 students prefer walking instead of riding the bus to school. About what percent of the students prefer walking?
Answer:
49 percent
Step-by-step explanation:
So convert the fraction into a percentage
245/500= 49%
A delivery person uses a service elevator to bring boxes of books up to an office. The delivery person weighs 160 lbs and each box of books weighs 50 lbs. The maximum capacity of the elevator is 1000 lbs. How many boxes of books can the delivery person bring up at one time? Note: The delivery person cannot bring up a partial/fraction of a box.
Answer:
16 boxes
Step-by-step explanation:
160+50x=1000
Solve for the x and you'll get 16.8. Now, because you can't have a fraction of a box, and you can't go over the limit, the answer is 16 boxes.
(How to solve for x:
Get x by itself by subtracting 160 to both sides.
50x=1000-160
50x=840
Divide both sides by 50.
x=16.8)
50.) Find the value of b so that 330_b= 226_b+5
A speed skater covered 1,484 meters in 106 seconds. Find the unit rate of speed in meters per second. guys...please help me...I am confuzzled!!
Pls help me :'(
1) Solve the following system of equations by GRAPHING. Remember to check!
y = –x + 1
Which is true about the triangles’ perimeters?
2 triangles labeled Triangle A and Triangle B.
Triangle A has 3 sides, each labeled 9 kilometers.
Triangle B's base is labeled 15 kilometers. Its other 2 sides are each labeled 8 kilometers.
The perimeter of Triangle A is equal to the perimeter of Triangle B. The perimeter of Triangle A is 3 kilometers less than the perimeter of Triangle B. The perimeter of Triangle A is 4 kilometers less than the perimeter of Triangle B. The perimeter of Triangle A is 9 kilometers less than the perimeter of Triangle B.
Answer:
Step-by-step explanation:
let x be the common ratio / or scale factor
the sides of the triangle are
5x, 12x and 13x
sum of the sides defines perimeter
that is
5x + 12x + 13x = 15
30x = 15
x = 15/30
x = 0.5
The sides of the triangle are 0.5(5) = 2.5
0.5(12)=6
0.5(13) = 6.5
2.5, 6, 6.5 all in inches
Need help with all of these! (55 points!)
Answer:
Step-by-step explani belive you add it if it is improper then simplify hope it helps
If 3x + 7y = 12 and x-y= 1, then what is the value of 5x + 5y?
Answer:
14.
Step-by-step explanation:
3x + 7y = 12
x - y = 1 Multiply this by -3:
-3x + 3y = -3 Add this to equation 1:
0 + 10y = 9
so y = 9/10 = 0.9.
x - 0.9 = 1
x = 1.9.
So 5x + 5y = 5*1.9 + 5*0.9
= 14.
I will give brainiest to whoever answers correctly !!
Most people celebrating the new year will spend no more than $200. Write the amount that the average person will spend as an inequality, where X is the amount of personal spend.
Answer:
10
Step-by-step explanation:
In the class of 35 students, there are 5 more boys than the girls. How many boys are in the class
Answer:
20 boys
Step-by-step explanation:
by subtracting 5, the boys would be equal to the girls, so there are 15 girls. 15+5=20
70 POINTSSSS HELPPPP !
What is the area of the figure?
40 ft2
84 ft2
96 ft2
can't be determined
3 cm 2 1/2 cm 2 1/2 cm
Answer: 18.75 cm
Step-by-step explanation:
I multiplyed 3 cm by 2 1/2 and 2 1/1 and got 18.75
ANSWER FREE BRINLIEST!! ANSWER THE TWOO CIRCLED ONES!!
Answer:
alright for the first one you set them equal o each other while for the second you do the same thing
first one:8
second one:5
Step-by-step explanation:
24/3 is x and x=8
for the second one
18+12 is 30 and 30/6 is 5so the second one is 5'
if you want me to clarify more please comment
Answer:
this was a while ago so i am just putting this answer so u can give the other dude brinliest
Step-by-step explanation:
Point X is located at (3, 2).
Point Y is located at (3, -8).
What is the distance from point X to Y?
Will Heart, thank, and give 5 stars. Brainlist isn't working at the moment because I gave too many.) :(
is it just me or is that europa person like rlly annoying bru,, they just keep deleting everybodies questions and answers smh.
Answer:
yeah ikr it gets annoying after awhile
What is the equation of the line that passes through the point (2,0) and has a slope
of 5/2
Answer:
y = 5/2x - 5
Step-by-step explanation:
Please let me know if you want me to add an explanation as to why this is the answer/how I got this answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)
PLEASE HELP .?.!.??.!
Answer:
I would say Mai
Step-by-step explanation:
So if you do the math like i did you would get 2 answers 10 and 0 so all you would have to do then for your question is figure out the math and you should be good to go. Also to me Mai wrote it in the way i would write it out.
q > d, if d = 3 is it true or false
