Answer:
4
Step-by-step explanation:
We know that 4.04 is less than 4.45 so we round down to 4.
(pls help this is elementary)
1, 45 is n% of 90.
2, 30 is 50% of n.
Answer:
Look below
Step-by-step explanation:
1. Let's set up an equation...
45=n%90
45=n/100*90
45=9n/10
Multiply both sides by 10...
450=9n
Divide both sides by 9
n=50
50%
2. Let's set up an equation...
30=50%n
30=50/100*n
30=1/2*n
30=n/2
Multiply both sides by 2
n=60
60
A number is increased by 25 percent and then decreased by 20 percent. The result is what percent
of the original number?
Answer: 100%
Step-by-step explanation
Let the number be 100
Add 25% to it :- 100+25% of 100 i.e., 100+25= 125
Subtract 20% of the resultant from it :- 125-20% of 125 i.e., 125-25= 100
The answer is 100%
Quadrilateral MATH is dilated by a scale factor of 2.5 centered at (1,1) to create quadrilateral M'A'T'H'. Which statement is true about this dilation?
Answer:
(1,1) and (2.5)=3.6Step-by-step explanation:
i think it is 3.6
What’s the answer too 17/12 = p/12
i need help please!!! :)
Answer:
y=-3
x=2
Step-by-step explanation:
First substitute 2y+8 for x in the equation: 2x-5y=19.
2(2y+8)-5y=19
4y+16-5y=19
-16 -16
4y-5y=3
Combine.
-y=3
Divide.
y=-3
Then, substitute -3 for y in the equation 2y+8, because x=2y+8.
x=2(-3)+8
x=-6+8
x=2
Should be correct! (Unless I made a simple math mistake.)
Answer:i am not helpin g u with alex
Step-by-step explanation:
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What is the value of x of this triangle and angles
Answer:
x = 9
Step-by-step explanation:
The big triangle is twice as big as the little triangle bc of the info given on midpoints.
So AC is twice as big as DE.
3x - 15 = 2(6)
3x - 15 = 12 ADD 15
3x = 27 DIVIDE BY 3
x = 9
Which quantity is proportional to 20⁄5?
Izzy has 3 1/2 yards of rope. She uses 3/5 of the rope to attach a tire swing to a tree in the yard. How many yards of rope does Izzy use for the tire swing?
Answer:
5 5/6
Step-by-step explanation:
3 1/2= 7/2= 35/10
3/5=6/10
35/10 / 6/10= 35/6 = 5 5/6
Examine the table and determine the rate of change.
A 2-column table with 4 rows. Column 1 is labeled x with entries 1, 2, 3, 4. Column 2 is labeled y with entries negative 4, negative 1, 2, 5.
What is the rate of change?
-4
-3
1
3
Answer:
I believe that it is 3. I could be wrong though.
Answer:
3
Step-by-step explanation:
got it right on edge
A mystery number rounds to 200 when rounded to nearest hundred. The sum of its ditgits is 10. When rounded to the nearest 10, it rounds to a number whose digits have a sum of 5. What is the mystery number
Answer:
226
Step-by-step explanation:
Let x = mystery number
If x rounds to the nearest hundred, 150 ≤ x ≤ 249
Therefore, it has 3 digits.
The sum of its digits = 10. Therefore, the combinations are:
1, 5, 4 rounds to 150 (sum of 6)
1, 6, 3 rounds to 160 (sum of 7)
1, 7, 2 rounds to 170 (sum of 8)
1, 8, 1 rounds to 180 (sum of 9)
1, 9, 0 rounds to 190 (sum of 10)
2, 0, 8 rounds to 200 (sum of 2)
2, 1, 7 rounds to 220 (sum of 4)
2, 2, 6 rounds to 230 (sum of 5)
2, 3, 5 rounds to 240 (sum of 6)
2, 4, 4 rounds to 240 (sum of 6)
The only sum of 3 digits that rounds to 5 is 226
Therefore x = 226
Okay, third times the charm.
In a company's first year in operation, it made an annual profit of $405,500. The profit of the company increased at a constant 24% per year each year. How much total profit would the company make over the course of its first 18 years of operation, to the nearest whole number?
Answer:
100% = $405,500
100 + 24 = 124%
124/100=1.24
$405,500 x 1.24^18 = $19479651.89
$19479651.89 - $405,500 = $19074151.89 profit.
To nearest whole number is $19074152.
Hope this helps!
Please answer!!! I am desperate!!! Will Give Brainliest!!! 20 pts!!!
2. Supplementary angles are two angles whose measures have the sum of 180º. Angles X and Y
are supplementary. The measure of angle X is 24° greater than the measure of angle Y. Find
the measures of both angles.
y equals a variable example is
y=1
x=1 +24
180-24 = 156
156÷2= 78
y =78
x= 78+24
Can you please help me do this?!
Answer:
the and swer is 3x+9
hoped that helped
Find the slope of this graph
Answer: Slope is 1/2
Step-by-step explanation:
We can write this slope intercept form
y=mx+b
m=slope
b=y-intercept
The Y-intercept is (0,2) on the line
the slope is 1/2
You get the slope by starting at the point (0,2) and going over to the next point on the line which is (2,3)
Now let's look at how we got there, we went up one time and right two times, giving us 1/2
In slope intercept form it would be y=1/2x+2
THE SLOPE IS 1/2
Help me please -Write a system of equations to describe the situation below, solve using elimination, and fill in the blanks.
Answer:
10 tray of club sandwiches and 4 tray of vegetarian sandwiches
1/4log81 - 1/2log9 = x
Answer:
Step-by-step explanation:
x=0
Multiply: (5t – 4)(4t 5) What is the product? 20t2 9t – 20 20t2 18t – 19 20t2 25t – 36 20t2 41t – 20.
We can open the brackets and internal terms will multiply to other bracketed expression.
The product result of given expression is given by:
Option A: [tex]20t^2 + 9t - 20[/tex]
Given that:To find product result of [tex](5t - 4)(4t+ 5)[/tex]
Multiplication will go like this:We can open the bracket of first expression and do further internal multiplication as:
[tex]\begin{aligned}(5t - 4)(4t+ 5) &= 5t(4t+5) -4(4t+5)\\&= 5t \times 4t + 5t \times 5 - 4 \times 4t -4 \times 5\\&= 20t^2 + 25t -16t - 20\\&= 20t^2 + (25-16)t -20\text{\: (For like terms, coefficients combines)}\\&= 20t^2+ 9t - 20\end{aligned}[/tex]
(-4 times +5 is -20 since -1 times +1 is -1)
Thus, the product result is given by:
Option A: [tex]20t^2+ 9t - 20[/tex]
Learn more about algebraic multiplication here:
https://brainly.com/question/1739720
solve for w. -9w=-27 simplify your answer as much as possible
Answer:
w = 3
Step-by-step explanation:
to solve for w, do the inverse operation to get w by itself. The inverse operation of multiplication is division. So divide -9 by -9 and divide -27 by -9. When dealing with multiplication and division of negative numbers, a negative and a positive are negative. two negative numbers are positive. -9 and -27 make positive 3 so:
w=3
hope this helps
250% of 65 is what number show ur work
Answer:
162.5
Step-by-step explanation:
250%=2.5
65×2.5=162.5
Answer:
162.5
Step-by-step explanation:
250% is the same as 2.5
2.5 * 65 = 162.5
I hope this helped and please mark me as brainliest!
The half-life of plutonium-244 is 80,000,000 years. Express the amount of plutonium-244 remaining as a function of time, measured in years with starting quantity A0.
The exponential function for the amount of plutonium-244 remaining as a function of time is given by:
[tex]A(t) = A(0)e^{-0.00000000866t}[/tex]
What is an exponential function?A decaying exponential function for the amount of a substance is modeled by:
[tex]A(t) = A(0)e^{-kt}[/tex]
In which:
A(0) is the initial value.k is the decay rate, as a decimal.The half-life of plutonium-244 is 80,000,000 years, hence [tex]A(80000000) = 0.5A(0)[/tex], which is used to find k.
[tex]A(t) = A(0)e^{-kt}[/tex]
[tex]0.5A(0) = A(0)e^{-80000000k}[/tex]
[tex]e^{-80000000k} = 0.5[/tex]
[tex]\ln{e^{-80000000k}} = \ln{0.5}[/tex]
[tex]-80000000k = \ln{0.5}[/tex]
[tex]k = -\frac{\ln{0.5}}{80000000}[/tex]
[tex]k = 0.00000000866[/tex]
Hence, the function is:
[tex]A(t) = A(0)e^{-0.00000000866t}[/tex]
You can learn more about exponential functions at https://brainly.com/question/25958656
I need help with this question
Answer:
Step-by-step explanation:
r = 3.5 / 0.5 = 7
t3 = 0.5 * 7^2
t3 = 0.5 * 49
t3 = 24.5
tn = t1 * 7^(n - 1)
t8 = 0.5 * 7*(8 -1)
t8 = 0.5 * 823543
t8 = 411771.5
This problem is a geometric progression. That means that each term is multiplied by a constant and the term before it to get the current term.
On Monday morning, Tyler deposited $345 into his checking account. Later that day he used his bank card to make a $398
purchase. Which expression can Tyler use to show the change in his bank account on Monday?
Answer:
x+345-398
Step-by-step explanation:
x+345-398
=x-53
where x is the amount of money he previously had on his account
Carol, Jada, and Brian were riding their bikes to the library after school. The library is 12 1/2 miles from school. Carol rides her bile 2 1/2 miles every five minutes. Jaylen rides her bike 5 3/4 miles every 12 minutes. Brian rides his bike 1 1/4 miles every 2 5/8 minutes. If they all leave school at the same exact time and follow the same exact path to the library, which person will arrive at the library first?
Answer:
Carol will arrive first.
Step-by-step explanation:
Since everyone leaves at the exact time and exact same spot, the problem devolves into who has the greatest speed.
To calculate speed, we do distance over time
Carol can bike 2.5 miles in 5 min, so their speed is .5 miles per min.
Jaylen can bike 5.75 miles in 12 min, so their speed is .479 miles per min.
Brian can bike at 1.25 miles in 2.625, so their speed is .476 miles per min.
Distance to the library doesn't matter in the context of the problem.
Please help w this I need quickly
What is the prime factorization of 47
Answer:
so the prime factorization of 47 is 1×47
What is the equation of the linear function?
Answer:
D. y= -1/2x + 3
Step-by-step explanation:
It is a negative slope so we can immediately eliminate option C. Slope is rise over run and on the graph it looks like - 1/2 is your slope. As for the other part, we look at where it aligns on the y axis, which looks like 3. hope this helps!
Solve the following pair of simultaneous:
[tex] 5x + 2y = - 2 \\ 4x + 3y = 4[/tex]
Answer:
x = -2 , y = 4
Step-by-step explanation:
given:
5x + 2y = -2 *4
4x + 3y = 4 *5
Solving simultaneously,
20x + 8y = -8 ....eq 1
(-) 20x +15y = 20 ...eq 2
.............................................
-7y = -28
y = -28 / -7
y = 4
if y = 4using equation 2,
20x +15(4) = 20
20x = -40
x = -2
Point J is in between T and W on segment TW. If TJ = 3y, JW = 10y, and TW = 91, find the value of y and the length of JW.
Answer:
y = 7 and JW = 70 (and TW = 21)
A number plus four equals nine. Is 13 the solution?
Answer - 5
Explanation - answer is not 13...
4 + ___ = 9
So now you should 9 - 4 = 5
so answer is 5.....
I hope you Understand...
