Answer:
fwe
Step-by-step explanation:
Use a system of linear equations with two variables and two equations to solve.
175 students enrolled in a freshman-level chemistry class. By the end of the semester, 4 times the number of students passed as failed. Find the number of students who passed, and the number of students who failed.
Answer:
35 failed and 140 passed
Step-by-step explanation:
Let p = number who passed
f = number who failed
p+f = 175
4 times the number of students passed as failed, so we need to balance this to set it equal
4f = p
Substitute this into the first equation
4r+f = 175
5f = 175
5f/5 =175/5
f = 35
Now find the number who passed
p = 4f
p = 4*35
p =140
hwlppppppppppppppppppppp
Answer:
A
Step-by-step explanation:
HELP PLEASEEEEEEEEEE
√-72 = √(i^2) 9*8 = 3i√8 = 3i√2^3 = 3i*2√2 =6i√2
Answer is D. 6i√2
3.89×10^9 in standard form
Answer:
3890000000
Step-by-step explanation:
Need answers to this geometry assignment similarity and similarity transformations
Answer:
the awnser is c then pust reset and it will give you the awnser
00:00
The numbers below follow a pattern.
0.007
0.07
0.7
7
Part A
What are the next two numbers in the pattern? Drag the numbers in the boxes.
70
700
7000
70000
0.007
0.07
0.7
7
Answer:
0.7 and 0.07
Step-by-step explanation:
Complete the two-way frequency table below, which shows the relationship between students who enroll in advanced Algebra and Physics in a particular high school. From a sample of 50 students, it is found that 39 are taking Algebra, 16 are taking Physics, and 7 are enrolled in both. How many students are enrolled in either Algebra or Physics? (4 points)
Algebra Not in Algebra Total
Physics 7 16
Not in Physics
Total 39 50
a
41
b
2
c
48
d
7
Some please help me
Answer:
48 students
Step-by-step explanation:
Represent algebra with A and physics with P
Given
Total = 50
n(A) = 39
n(P) = 16
n(Both) = 7
Required
Determine students taking Algebra or Physics
This is calculated using
n(A or P) = n(A) + n(P) - n(Both)
n(A or P) = 39 + 16 - 7
n(A or P) = 48
A total of 48 students are enrolled in either physics or algebra.
Number of students taking algebra n(A)= 39
Number of students taking physics n(B)= 16
Number of students taking both subjects n(A∩B)= 7
So, the number of students taking either physics or algebra will be the union of sets i.e. n(A∪B)
What does the union of sets represent?The union of two sets is a set containing all elements that are in A or in B (possibly both).
As we know,
n(A∪B) = n(A) + n(B) - n(A∩B)
n(A∪B) = 39+16-7
n(A∪B) = 48
Therefore, A total of 48 students are enrolled in either physics or algebra.
To get more about set theory visit:
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A survey showed that 82% of kids play video games at home. What fraction of kids play video games at home?
Answer:
8.2/10
Step-by-step explanation:
Answer:
42/50
Step-by-step explanation:
Estimate the average time spent picking one's nose in minutes per day
Answer: 2 minutes
Step-by-step explanation:
According to the book, ''Guesstimation: Solving the World's Problems on the Back of a Cocktail Napkin'', on average, everyone picks their noses for 2 minutes each day.
This figure is simply a reasonable compromise between the least and highest amount of time that people can spend picking their nose in a day as well as the assumption that everyone does it.
The roots of the equation x^2+bx+c =0 are -4 and 2. Find c using the quadratic formula
Answer:
Step-by-step explanation:
Hello,
c= -4 * 2 = -8 as
[tex]x^2+bx+c=(x+4)(x-2)=x^2+2x-8[/tex]
with the quadratic formula
[tex]x_1=\dfrac{-b+\sqrt{b^2-4ac}}{2a}\\\\x_2=\dfrac{-b-\sqrt{b^2-4ac}}{2a}[/tex]
And
[tex]x_1x_2=\dfrac{b^2-b^2+4ac}{4a^2}=\dfrac{c}{a}[/tex]
thanks
can someone tell me what to write of how i found the answer please ?!
Answer:
108
Step-by-step explanation:
4−22+135−9
=−18+135−9
=117−9
=108
6 TH grade math
On a hot day, Myra poured 4 1/8 buckets of water into a plastic wading pool. A few minutes later she added another 3 5/8 buckets. How much water did Myra pour into the pool?
Answer:
7 3/4
Step-by-step explanation:
4 1/8 + 3 5/8
Add the whole numbers, 4 + 3 = 7.
Add the fractions, 1/8 + 5/8 = 6/8.
You get 7 6/8. Simplify 6/8 to get 3/4.
Your answer is 7 3/4.
a spring of original length 25 cm was stretched to a new length of 28 cm when a force of 12 n was applied. what would its new length be if the applied force is doubled?
a. 31 cm
b. 35 cm
c. 50 cm
d. 45 cm
Answer:
A. 31 cm
Step-by-step explanation:
Hopefully its right :)
Solve the following equation: 7a-5=2a-15
Answer:
7a-5=2a -15
7a-2a=-15+5
5a=-10
5a/5=-10/5
a=-2
Which variable would be easier to eliminate?
- 4x - 9y= - 10
4x + 2y = 24
Оy
neither
Ох
It's easier to eliminate x because when you add both equations -4x +4x would be zero
A falcon flew 70 miles in 3 hours. What was the speed of the falcon?
speed = distance over time
1 mile = 1609 meters.
Answer:
10.4 meters per second
What's 2 × 30 ÷12 +10
Answer:
Your answer would be 15
Step-by-step explanation:
The first step you are going to want to do is multiply 2 and 30
30×2=60
Then you are going to divide 60 by 12
60÷12=5
Last you wanna add the 5 and the 10
5+10=15
2y+4x=8 Solve for y
Show steps
Answer:
y=−2x+4
Step-by-step explanation:
Let's solve for y.
2y+4x=8
Step 1: Add -4x to both sides.
4x+2y+−4x=8+−4x
2y=−4x+8
Step 2: Divide both sides by 2.
2y/2=
(−4x+8)/2
y=−2x+4
Answer:
y=−2x+4
find 759 divided by 3
Answer:
253 .....is that it??
Step-by-step explanation:
Answer:
253!
Step-by-step explanation:
Find the linear function with the following properties.
f(0)=−9 Slope of f=−8
Answer:
f(x) = -8x - 9Step-by-step explanation:
GivenFunction f, with
f(0) = -9Slope of f = -8To findLinear functionSolutionSlope-intercept formula
f(x) = mx + bf(0) = -9 means y-intercept b = -9, and the slope is m = - 8So the function is
f(x) = -8x - 9
Store B sells a set for $27.00 and offers a 20% discount
Answer:
22.50
and you can pleasent do 22.50
Step-by-step explanation:
Review the graph.
Which function is represented in the graph?
y = tanx
y = cosx
y = tan-1x
y = cos-1x
Answer:
D)
Step-by-step explanation:
I used a graphing calculator and typed in every equation and D matched the graph.
The graph given in the figure represents cos^-1(x). The correct option is (D).
What are trigonometric ratios?The trigonometric ratios are defined for a right angled triangle.
The example of these ratios are sin, cos, tan, cosec, sec and cot.
The trigonometric ratios are useful in determining the heights and distances of the large objects.
The graph for the given question shows that for the given function the range and domain are as follows,
Domain = [-1, 1]
Range = [0, π]
The value of the function at 0 is π/2.
Since only the inverse of sinusoids have their range as [-1, 1] and the value of cos(x) at x = π/2 is 0. It implies that the given function is inverse of cos(x).
Hence, the given function represents inverse function of cos(x) which is cos^-1(x).
To know more about trigonometric ratio click on,
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we paid $75 for 15 hamburgers. What was the rate per hamburger
Answer: $5
Step-by-step explanation: $75 divided by 15 burgers is $5 per burger
Answer:
5
Step-by-step explanation:
we paid $75 for 15 hamburgers.
so 15 hamburges = $75
so 1 hamburges = 75/15 =$5
therefore ,The rate per hamburger is $5
Please Solve as Fast as You Can
The coordinates of Point A are (-1, 4). If Point A is reflected across the x-axis AND then across the y-axis, what are the coordinates of Point A now?
Answer:
(1,-4)
Step-by-step explanation:
If you reflect it over the x it would equal (-1,-4), then if you reflect it over the y it would equal (1,-4)
8 mice.
There are _ mice.
All the mice run away.
_ mice are left.
Please answer correctly
Answer:
0 because if all the mice ran away then they would be gone
Find the missing angle measures. (2x-3),(8x) and(x+7)
Answer:
2x-3 = 29
8x = 128
x+7 = 23
Step-by-step explanation:
The sum of the angles of a triangle is 180
2x-3 + 8x+ x+7 = 180
Combine like terms
11x+4 = 180
Subtract 4 from each side
11x+4-4= 180-4
11x = 176
Divide by 11
11x/11 =176/11
x =16
2x-3 = 2*16-3 =32-3 = 29
8x = 8*16 =128
x+7 = 16+7 = 23
Pythagoras and True Love
SRB
155 239
Pythagoras is a "Mr. Lonelyhearts" columnist for a popular newspaper. He recently
received the following letters. How would you solve these lovebirds' problems?
15a6=c
c=24.4
1. Dear Pythagoras: My girlfriend Roma and I want to elope. But we have a
problem. She lives in a third-floor apartment. There is a 14-foot-wide moat
around the apartment, and Roma's window is 20 feet above the moat. If I
throw a rope up to Roma, she could slide down it and escape. How long a
rope should I buy?
Longingly, Jules
149+
142.c
796=02
Let us find the length of rope Jules will need using the pythagoras theorem .
Width of the moat ( let the moat be the base of this triangle ) = 14 foot
Distance from Roma's window to the boat ( let this be the side of the triangle where the right angle is present ) =20 feet
Then the length of rope needed ( hypotenuse ) =
= Let us name the triangle that is formed as △ ABC . Then ;
In △ ABC :
AB = the width of moat ( leg of triangle ) = 14 foot
BC = The distance from the window to the moat ( base ) = 20 feet
AC = Length of rope needed ( hypotenuse ) =
= AB ² + BC² = AC² ( according to the pythagoras theorem the square on the hypotenuse will be equal to the sum of the squares on the other two legs )
= 14² + 20² = AC²
= 196 + 400 = AC²
= 596 = AC²
= 24 × 24 = AC × AC
= 24 foot = AC = length of rope needed by jules .
Therefore , Jules will need a 24 foot rope so that his girlfriend can slide down and escape from her apartment .
Paula walked 4.5 miles. How many kilometers did Paula walk? I mile = 1.61 kilometers
Answer:
2.79 kilometers
Step-by-step explanation:
4.5/1.61
Which of the following ordered pairs is a solution to the graph below
(0,-4)
(-2,-6)
(8,0)
(-2,0)
Answer:
(-2, -6)Step-by-step explanation:
Graphed is the system of inequalities
The solution of the system is the darker shaded area
Only one of the given points falls to same area:
(-2, -6)the one of the given point falls to same area ;
=> (-2,-6) The required answer is (-2,-6)6. The admission fee to an amusement park is $20. It
costs an additional p dollars to rent a locker to hold
your belongings. The total cost for 3 people to
enter the amusement park and each rent a locker is
$87. How much does it cost for one person to rent a
locker?
A. $9
B. $29
C. $10
D. $1