if 500 students were at the assembly, then the number of students who were wearing spirit wear is 200 students.
Calculations and Parameters:Since we know that:
4/10 of every student is wearing spirit wear.
The total number of students was 500
Hence,
We can express this as:
4/10 x 500
=4 x 50
= 200
Read more about percentages here:
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(3x^4-6x^2-9)*(10x^4-3x^2+7x)
What is the quotient in simplest form? StartFraction 8 Over 3 EndFraction divided by two-thirds 0 StartFraction 9 Over 16 EndFraction 1 and StartFraction 7 Over 9 EndFraction 4
Answer:
D: 4
Step-by-step explanation:
Answer:
4th answer
Step-by-step explanation:
Whats 39% as a fraction? Ik its 39/100 but is that the answer tho?
Answer:
Yes, 39/100 is the correct answer. You can't necessarily simpify it any further than that
Step-by-step explanation:
Worth 30 points. Help a homie out
Answer:
Multiply the second equation by -3 to get -3x - 9y = -30.
Step-by-step explanation:
When eliminating, you need to find a term with the negative of that term to combine so that they cancel each other out. An example would be 3x in the first equation and (-3x) in another equation so that when added, it becomes: 3x-3x = 0.
In the second equation, you see that there is already an x there and you just need to make it become (-3x). Thus, you multiply the entire second equation by -3 to make -3x. Once you have done that, you can combine the two equations and eliminate 3x from the first equation.
3x + 5y = 30
-3x - 9y = -30
3x + 5y -3x - 9y = 30 + (-30)
0 - 4y = 30 - 30
-4y = 0
You can find y and then x later on from here.
Help If u can please show ur work thank you
Answer:
the answer is 21
Step-by-step explanation:
21x2 = 42, 42+3 = 45
Answer: 21 cupcakes
Step-by-step explanation: x is the number of cupcakes. since she baked 45 cupcakes on tuesday, which is 3 more than 2x the number of cupcakes on monday, we would write 45=2x+3. First, subtract the 3 from both sides of the equation. This will give you 42=2x. Then divide both sides by 2. This will give you 21=x. So, the answer is 21
craig rose is an over-the-road truck driver. if he is paid $0.54 per mile, what is craig's total pay for the day he drove 527 miles?
Answer:
$284.58
0.54 x 527 is 284.58
Find the median of the following set of data:100,40,200,20
Answer:
Median=(n+1/2)th item
Now,
4+1/2
=2.5
Again,
2nd item+(3rd - 2nd item) *0.5
40+(200-40)*0.5
40+160*0.5
40+80
120
Therefore, Median =120
Answer quickly please
What is the solution of 5 = t/2 -3?
Answer:
t=16
Step-by-step explanation:
you have to change the numbers to get just the variable.
we start from -3.
5=t/2-3
8=t/2
(we multiply by 2 instead of dividing)
8×2=16
t=16
Alma is choosing a new smartphone and cellular service plan. Let p be the phone’s price in dollars, m be the cost of the selected plan in dollars per month, and C be Alma’s total cost in dollars after time t, measured in months of service. Write an equation that expresses C in terms of p, m, and t. Then solve your equation for t.
The value of the expression for t will be
t = (C - p)/m
How to calculate the equation?Let p = the phone’s price in dollars
m = the cost of the selected plan in dollars per month
C = Alma’s total cost in dollars after time t, measured in months of service.
Therefore, the equation that expresses C in terms of p, m, and t will be:
C = p + m(t)
To find t will be:
C = p + m(t)
Subtract p from both sides
C - p = m(t)
Divide through by m
t = (C - p)/m
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5. Find the slope of the line
PLZZ Help me
Answer:
y = -2x
Step-by-step explanation
slope intercept form: y = mx + b
m is slope and b is y-intercept
1. lets find y-intercept cuz thats easiest
the line crosses (0,0) at the y-axis so there is no y-intercept
2. to find slope rise/run
we'll start at (0,0) since that's the y-intercept
3. slope is rise/run = -2/1 = -2
it's negative becuase it's going left
_____________________________________________________
another way you can find slope is by the equation y2 - y1/ x2 - x1
take 2 random points from the line, i will use (0,0) and (-2,4)
4 - 0/ -2 - 0 = 4/-2 = -2
slope is -2
5. Seismologists use the Richter scale to measure the magnitudes and intensity of earthquakes that occur all over the earth. (see below, some info about Richter scales, and intensity formula)
Let’s say an earthquake hit Los Angeles, CA and had a magnitude of 3.4. If another earthquake hit Atlanta, GA and was a magnitude of 1.2, then how much more intense was the earthquake in LA?
Answer:
158.49
Step-by-step explanation:
10^(3.4 - 1.2) = 158.48931924611
round to 158.49
6 gas-powered toy cars cost $6,000. The cost of each car is the same. What is the cost of each car?
Answer:
1,000$
Step-by-step explanation:
1,000 x 6 = 6,000$ or 6,000 in math
Answer:
$1,000
Step-by-step explanation:
x = 6,000/6
x = 1,000
1. Explain whether each following example is proportional or non-proportional.
(a)y=7x-3
(b)The graph is for b
(c) A gallon of milk costs $1.99. A half-gallon of milk costs $3.89.
(d)
x y
2 13
3 19.5
4 26
5 32.5
9514 1404 393
Answer:
(a), (b), (c) are non-proportional
(d) is proportional
Step-by-step explanation:
An equation or graph with a non-zero y-intercept is non-proportional. That is true for (a), (b), (c).
The table of (d) is proportional, with a constant of proportionality of 6.5.
__
Comment on (c)
In a proportional relation, price would go up with quantity, not down. If the prices both end in 9, one cannot be double the other, as would be required for the price of a gallon to be proportional to the price of a half-gallon.
HELP!!!! WILL MARK BRAINLIEST!!!!!!
Answer:
2sqaured + 24
Step-by-step explanation:
Put the steps of solving the equation in order from first to last.
2x + 1 = -1
Answer:
x = 1
Step-by-step explanation:
2x + 1 = -1
2x = -1 - 1
2x = -2
x = -2 ÷ -2
x = 1
Find the coordinates of point b on ac such that the ratio of AB to BC is 2:1
A(2,-8)
C(-4,7)
Please help!!
Answer:
(-2, 3)
Step-by-step explanation:
the point B is
B(x,y)
x
AB (A to B) is twice BC ( B to C )
AB is 2 - x. BC is x - (-4)= x + 4
So
2-x=2 (x + 4)
2-x=2x + 8
3x = -6
x = -2
y
(Same logic as above)
AB is -5 -y. BC is u - 7
-5 -y = 2(y - 7)
-5 - y = 2y - 14
3y = 9
y= 3
the point is (-2, 3)
Triangle ABC is similar to triangle DEC.
Find the value of x.
Answer:
5.6
Step-by-step explanation:
EC = 10
BC = 14
14/10 = 1.4
DE = 4
AB = x = 1.4 * 4 = 5.6
Answer:
[tex]\frac{x}{14} = \frac{4}{10}[/tex] (set up as a proportion)
10x= 56 (cross multiply and then solve)
x= 5.6
Step-by-step explanation:
What is 48% of 120.
Answer:
57.6
Step-by-step explanation:
48% is the same as 0.48
so 120 * 0.48 = 57.6
What is the equation of a line parallel to the line whose equation is у=х+ 2?
Answer:
It could have any number as long as the slope stays the same.
Step-by-step explanation:
It could have any number as long as the slope stays the same.
For example, it could be y=x-2 or y=x+95. Just as long as the x and y are the same.
Michael, who really likes to have a bag of chips with his lunch, is comparing chip prices at the store. He can buy a 10-pack of Double Cheese Crisps for $7.80 or a 15-pack of Cheddar Skins for $11.85. Which brand costs less per bag?
Answer:
10-pack of Double Cheese Crisps cost $7.80 cost less per bag
Step-by-step explanation:
Step one:
given
10-pack of Double Cheese Crisps cost $7.80
15-pack of Cheddar Skins cost $11.85
Required:
The unit cost per bag
Step two:
The unit cost of 10-pack of Double Cheese Crisps cost $7.80 is
7.8/10= $0.78
The unit cost of 15-pack of Cheddar Skins cost $11.85 is
11.85/15= $0.79
Answer:
double cheese crisps
Help me with these problems ASAP please! *look at attached images
.:$$:$;&4&4’xkekekenfnejeidndndj HELPPP
Answer: Yes
Step-by-step explanation: You can test whether a graph is a function by checking to see if the same X value is used twice. You can also use the Vertical line test to check aswell. Research Vertical Line Test if you are clueless. But Yes, this is a function
What is the fraction form of $0.25?
✨PLSS HELPPP ✨ SHOW UR WORK TYY ☺️
When Sebastian left his house in the morning, his cell phone battery was partially charged. The charge remaining in Sebastian's battery, as a percentage, can be modeled by the equation B=-9t+81, where t is the number of hours since Sebastian left his house. What is the slope of the equation and what is its interpretation in the context of the problem?
Answer:
The slope is -9
and the interpretation is that the percentage that drops on the battery per hour is 9%
Step-by-step explanation:
Generally, the equation of a straight line can be represented by the formula;
y = mx + b
where m is the slope and b is the y-intercept
With respect to the given equation, the slope is -9
What it means is that the percentage that drops per hour on the battery is 9%
Answer:
-9, the percentage charge that Sebastian's phone loses each hour
Step-by-step explanation:
ASAP PLZ HELP ME QIETH THE QUESTION
Answer:
58 square units
Step-by-step explanation:
Take the shaded figure as a full larger rectangle minus the rectangular part which is not shaded.
Area of the full larger rectangle:
Area = length × width
Length = |12 - 2| = 10 units
Width = |8 - 1| = 7 units
Area = 10 × 7 = 70 units²
Area of the unshaded small rectangle:
Length = |10 - 4| = 6 units
Width = |3 - 1| = 2 units
Area = 6 × 2 = 12 units²
Area of the shaded figure = 70 - 12 = 58 square units
50 points
The map shows ancient and modern cities on the Indian subcontinent.
A map titled Ancient and Modern Cities on the Indian Subcontinent. A key shows Ancient Indian civilizations with yellow dots and Modern Indian cities with purple dots. There are groups of yellow dots near the western coast and along the Indus River. The modern Indian cities of Mumbai and Chennai are along the coastline with Kolkata and New Delhi near rivers.
How do the locations of ancient and modern Indian cities differ?
a Ancient cities developed only in inland regions, while modern cities developed along the coast.
b Ancient cities developed in mountains, while modern cities developed along the Ganges River.
c Ancient cities developed along the Arabian Sea, while modern cities developed mainly on the Bay of Bengal.
d Ancient cities developed mainly along the Indus River, while modern cities developed near different bodies of water.
Answer:
D.
Step-by-step explanation:
Ancient cities developed mainly along the Indus River, while modern cities developed near different bodies of water.
Answer:
d
Step-by-step explanation:
onsider the line y=-5+6.
find the equation of the line perpendicular to this line and passes through the point (-2,-3)
find the equation of the is parallel to this line and passes through the point (-2,-3)
Answer:
The equation of the line perpendicular to the given line is
[tex]y=\frac 1 5 x + \frac {-13}{5}[/tex].
The equation of the line perpendicular to the given line is
[tex]y=-5 x -13[/tex].
Step-by-step explanation:
The given line is y=-5x+6
The slope of the given line, [tex]m_1=-5[/tex]
Let [tex]y= m_2 x + C_2[/tex] be the slope of the line perpendicular to y=-5x+6,
where [tex]C_2[/tex] is constant.
As multiplication of slopes of two perpendicular lines equal to -1, so
[tex]m_1m_2=-1 \\\\\Rightarrow -5\times m_2= -1 \\\\\Rightarrow m_2= \frac {-1}{-5}= \frac 1 5[/tex]
So, the equation of the line perpendicular to the given line is
[tex]y=\frac 1 5 x +C_2[/tex] which passes through the point (-2,-3), so
[tex]-3=\frac 1 5 (-2) +C_2 \\\\\Rightarrow C_2 = -3 +\frac 2 5= \frac {-13}{5}[/tex]
Hence, the equation of the line perpendicular to the given line is
[tex]y=\frac 1 5 x + \frac {-13}{5}[/tex].
Now, let [tex]y=m_3 x +C_3[/tex] be the equation of the parallel line to y=-5x+6.
As the slopes of two parallel lines are the same, so [tex]m_3=-5[/tex].
So, the equation of the parallel line becomes
[tex]y=-5 x +C_3[/tex] which passes through the point (-2,-3), so
[tex]-3=-5 (-2) +C_3 \\\\\Rightarrow C_2 = -3 - 10 = -13[/tex]
Hence, the equation of the line perpendicular to the given line is
[tex]y=-5 x -13[/tex].
Determine the slope of the line 8x – 4y - 9 = 0.
Оа
HN
Ob
2
ос
3
Od
4
Answer:
m = 2
Step-by-step explanation:
The given equation is :
8x – 4y - 9 = 0
The general equation of a line is given by :
y = mx+b ...(1)
here m is slope and b is y-intercept
Equation (1) can be written as :
8x – 4y = 9
Dividing both sides by (-4)
[tex]\dfrac{8x}{-4}-\dfrac{4y}{-4}=\dfrac{9}{-4}\\\\-2x+y=-\dfrac{9}{4}\\\\y=2x+\dfrac{-9}{4}[/tex] ...(2)
Comparing equation (1) and (2), we get :
m = 2
Hence, the slope of the line is 2.