Answer:
Emily has 20 students and Santiago has 18 students in home rooms
Step-by-step explanation:
to figure out the number in Emily's class we need to answer this question - '15 is 75% of what number'?
we can use:
is/of = %/100
is = 15
of = 'n'
75% = 75/100 or 3/4
15/n = 3/4
cross-multiply to get:
3n = 60
n = 20
So there are 20 students in Emily's home room
Now we find the number of students in Santiago's home room:
the question is - '12 is 2/3 of what number'?
we can write this equation:
12 = 2/3n
multiply each side by 3/2 to get:
36/2 = n
18 = n
18 students in Santiago's home room
An airplane on a transatlantic flight took 4 hours 20 minutes to get from New York to its destination, a distance of 3,000 miles. To avoid a storm, however, the pilot went off his course, adding a distance of 200 miles to the flight. Approximately how fast did the plane travel?
(A) 640 mph (D) 750 mph (B) 710 mph (E) 772 mph (C) 738 mph
The tree diagram represents an
experiment consisting of two trials
P(A) =[?]
Answer:
0.18Step-by-step explanation:
If the annual interest rate is 18.240%, what is the daily interest rate?
Answer:
≈0.0499% with 365 days
Step-by-step explanation:
18.240 / 365 = 0.04997260 (and so on..)
The height of a tower on a scale drawing is 14 centimeters. The scale is 2 cm : 29 m. What is the actual height of the tower?
Answer:
203 m
Step-by-step explanation:
Set up a proportion and solve it.
drawing size : real size
14 cm : x
2 cm : 29 m
14/x = 2/29
2x = 14 × 29
x = 7 × 29
x = 203
Answer: 203 m
PLEASE HELP!! In a pet store, the ratio of fish to birds is 8 to 3. There are 24 fish in the store.
What is the total number of fish and birds in the store?
Enter your answer in the box.
Hey I need help with please
Thank You.
how do you do 6x-11=-2x+5
BRING IT ON!!!!!! >:)
Answer: *scared*
Step-by-step explanation:
Pleasee help me with this ty…………
Answer:
28.4
Step-by-step explanation:
IJ corresponds to FG, and JK corresponds to GH. So, x/6 = 52/11. 11x = 312, x = 28.36, which rounds to 28.4
Select the equation in slope-intercept form for the line through points (5, - 3) and (10, - 2) and is perpendicular to the line described by y = - 5x + 4
Answer:
y = x/5 - 4
second option is the correct answer.
Step-by-step explanation:
y = -5x+4
y = mx+b
m = -5
Now
Slope of the line perpendicular to a line would be the negative proprtional of the slope of the line.
so,
For the points (5,-3) and (10,-2)
m = 1/5
y = mx + b
or, -3 = 1/5 × x + b
or, -3 = 1/5 × 5 + b
or, -3 = 1+b
so, b = -4
Now,
y = mx+b
or, y = 1/5 × x + (-4)
or, y = x/5 - 4
Bonjour quelqu'un pourrait m'aider à résoudre ce calcul svp ?
A= (5+T) (T-2)
There are 46 children at the zoo. Twenty-nine students like popcorn and twenty like peanuts. Fifteen like both. How many students like neither popcorn nor peanuts?
Answer:none
Step-by-step explanation:
You must mean 64 instead of 46.Because 29+20+15=64 but none would agree to dislike both popcorn not peanuts.
how many 1/2s are in 3/8
Answer:
3/4 is your answer, good sir. (or ma'am)
Step-by-step explanation:
3/8 divided by 1/2 = 3/8 times 2/1 = 6/8 and that simplifies to 3/4
So, 3/4 of a half is in 3/8
FACTOR COMPLETELY
x^2-7x+7y-y^2
Given: [tex] {x}^{2} - 7x + 7y - {y}^{2} [/tex]
Now factoring them,
[tex] = > (x - y)(x + y) - 7(x - y)[/tex]
[tex] = > (x - y)(x + y - 7)[/tex]
Therefore, the answer to the question is [tex] (x - y)(x + y - 7)[/tex]
Suppose that after 10 years of service, 40% of computers have problems with motherboards (MB), 30% have problems with hard drives (HD), and 15% have problems with both MB and HD.
(a) Are the events A have problems with motherboards" and B have problems with hard drives independent? Why or why not?
(b) What is the probability that a 10-year old computer still has fully functioning MB and HD?
Karen jumped rope for 20 minutes she stopped at 8:05 when does she start jumping
she started jumping rope at 7:45
How many solutions does the system have?
y = -3x +9
3y = -9x + 9
Answer:
{y,x} = {0,1}
Step-by-step explanation:
// Solve equation [1] for the variable y
[1] y = 3x - 3
// Plug this in for variable y in equation [2]
[2] -3•(3x-3) - 9x = -9
[2] - 18x = -18
// Solve equation [2] for the variable x
[2] 18x = 18
[2] x = 1
// By now we know this much :
y = 3x-3
x = 1
// Use the x value to solve for y
y = 3(1)-3 = 0
What is the volume of this rectangular prism?
4/3cm 4/3cm 4/3cm
Answer:
2.37 [tex]cm^{3}[/tex]
Step-by-step explanation:
Multiply all dimensions of the rectangular prism
length x width x height = volume
4/3 cm x 4/3 cm x 4/3 cm = 2.37 [tex]cm^{3}[/tex]
Answer in Mixed Number: [tex]2\frac{10}{27}[/tex]
Answer in Improper Fraction: [tex]\frac{64}{27}[/tex]
Please help! Due at 11:30!!
Answer:
B (atleast from my calculations)
Step-by-step explanation:
The top dot is on 2 on the x axis and on 4 on the y axis so
Y=x+2
4=2+2
Hope this helps
Find the arc length of the partial circle.
Either enter an exact answer in terms of π or use 3.14 for π and enter your answer as a decimal.
_____ Units
Answer:
9.423
Step-by-step explanation:
Using 3.141 as Pi
Using the Arc length equation:
Arc length = [tex]\pi d * angle/360[/tex]
As the angle of the missing section is 90 degrees, and all angles around a point must be 360 degrees, it leaves 360-90 = 270 degrees for the angle.
As the radius is 2, the diameter is twice the length of the radius so 2*2 = 4 so the diameter is 4.
[tex]\pi 4 * 270/360[/tex]
3.141 * 4 = 12.564
270/360 = 0.75
12.564 * 0.75 = 9.423
So 9.423 is the arc length.
What is the value of x?
Answer:
8
Step-by-step explanation:
10x+14=94 so it will be x=8
A fair spinner has 10 equal sections: 3 red, 4 blue and 3 green.
It is spun twice.
What is the probability of getting 2 different colours?
Answer:
1/3 chance on getting the different colors on the spinner.
Step-by-step explanation:
I WORK + I LEARN = I PASS
IPASS Corn Maze 2
Tina and her family live on a farm. Each summer
they design and plant a corn maze for local
children to enjoy in the autumn. This year Tina
is designing the maze. Here are the details of
her proposed design.
The corn is to be planted in four
concentric
circles as shown in the diagram.
The radit of the circles of corn are as marked
in the diagram
A 3-Foot arc of each circle of corn will not be
planted, as shown in the picture.
+
Tina's parents want to make a gravel walkway
that will extend 6 feet from the outer circle of
the maze all the way around the maze. Find the
area of the walkway. Round your answer to the
nearest square foot, if necessary.
10 ft
420 ft
30 ft
-40 ft
Answer:
460 ft long because if you add them all together and minus 40 that what you should get
Solve the simultaneous equations
-x + 5y = -7
x + y = – 5
x = 1
y= 0
Answer:
y=-x-5
-x+5(-x-5)=-7
-x-5x-25=-7
-6x=18
x=-3
-(-3)+5y=-7
3+5y=-7
5y=-10
y=-2
solution
(-3,-2)
Hope This Helps!!!
Step-by-step explanation:
-x+5y= -7
x+y=-5
add both equation to eliminate x
6y=12 :. y=2
substitute y =2 in equation (2)
x +2 =. -5
x = -5+2 = -3
:. y=-2 ,x = -3
mark me brainliest
WHO WANTS TO HELP ME WITH MATH??
Answer:
[tex]f^-1 (x) = -3-x[/tex]
Step-by-step explanation:
[tex]f(x) = -x-3\\f(x) = y\\y = -x-3[/tex]
Now we have to change the "x" into "y" and viceversa
[tex]x = -y-3\\[/tex]
Then,
[tex]x+3=-y\\x+y = -3\\y = -3 - x\\f^-1 (x) = -3-x[/tex]
Alberto has a scale drawing of an object whose area is 12 square centimeters. The scale factor is 1:3 Alberto says that the area of a real object is 36 square centimeters is Alberto's answer is correct.
WIL GIVE GIVE BRAINLIEST LOTS OF POINTS
Answer:
No, Albert's answer is not correct
Step-by-step explanation:
For illustrative purposes, let's say the object is a rectangle with width 2cm and length 6cm.
Therefore, area = width x length = 2 x 6 = 12 cm²
If the scale factor is 1 : 3, then each side of the real object should be 3 times larger than the scale drawing.
So the width = 2 x 3 = 6 cm
and the length = 6 x 3 = 18 cm
Therefore, the area of this rectangle would be 6 x 18 = 108 cm²
So the scale factor of the area is: 12 : 108 = 1 : 9
so Alberto's answer is incorrect, as 12 : 36 is NOT 1 : 9
NEED HELP ASAP PLZZZZZ!!!!!
Answer:
The Angle-Side-Angle Postulate (ASA)
Step-by-step explanation:
Circle all the true equations
A. 5+0=0
B. 15 x 0=0
C. 1.4+2.7=4.1
D. 2/3 x 5/9= 7/12
E. 4 2/3 = 5- 1/3
Stephanie is saving money for a computer. So far she has saved $350. Write an equation to show how much she needs to save each month,m, for the next year so she has $1600 to spend on the computer.
Answer:
I believe the answer is x less than > with a line under it 83.33.
The sales tax rate in New Mexico is 5.125%. Which equations represent the sales tax, t, you would pay in New Mexico for an item of cost c?
t = 0.05125c
please give brainliest
