Answer:
D. 22
Step-by-step explanation:
I took the test
Answer:
d
Step-by-step explanation:
For what values of k does the function y = cos(kt) satisfy the differential equation 81y'' = â16y? (Enter your answers as a comma-separated list.)K = ______
Answer:
16/81
Step-by-step explanation:
Given the expression, 81y'' = -16y where y = coskt,
We want to know the value of k that satisfies the expression
y' = -ksinkt
y" = -k²coskt
Substitute y and y" into the expression given;
81y'' = -16y
81(-k²coskt) = -16(kcoskt)
-81k = -16
Divide both sides by -81
-81k/-81 = -16/-81
k = 16/81
Hence the value of k is 16/81
A Subaru Outback and a Freightliner Cascadia truck leave an intersection at the same time. The Outback heads west at an average speed of 70 miles per hour while the Cascadia heads south at an average speed of 45 miles per hour. Find an expression for their distance apart d (in miles) at the end of t hours.
Answer:
d = 83.22tStep-by-step explanation:
The lines form legs of a right triangle, so the distance between the cars is the hypotenuse
The lines at t hours are:
70t and 45tSo the distance d is:
d = √(70t)²+(45t)² = √4900t²+2025t² = √6925t² = 83.22td = 83.22tLynn is making custom bricks. She combines 39 pounds of water and 48 pounds of brick dust in a mixing bucket. She spills 13 pounds of the mixture while stirring the contents. The mixture is then poured into small dirt holes to make bricks. Each brick requires 7 pounds of mixture, and the leftover mixture is washed out of the mixing bucket.
What is the greatest number of bricks Lynn can make?
(blank)( bricks
How many pounds of mixture will be washed out of the bucket if Lynn makes the greatest number of bricks?
(blank ) pounds
Answer:
Um, no lo sé, lo siento, solo necesito los puntos
Step-by-step explanation:
1. A school gym has a width of 270 ft. Which of the following is equivalent to 270 ft?
90 yd
810 yd
9 yd
Not here
Answer:
It should be 90
Step-by-step explanation:
Because 270 divided by 3 is 90
Out of the 800 students enrolled in a recreational
flag-football program, 32% are seventh graders.
How many students in the program are seventh
graders?
sum1 helpppp ASAPPPPPPPP
Rectangle WXYZ was dilated using the rule D, z 12/5
What’s is W’ X’
O8units
O10units
O12units
O14units
Answer: C, 12 units on edge
Step-by-step explanation:
Which postulate or theorem can be used for...
Answer:
A. SSS
Step-by-step explanation:
∆ABC has shown above has two given sides indicated, AB and AC, which are congruent to the corresponding two sides l, DC and DB, of ∆DCB.
Also, their third side is also congruent since they share a common side, side BC.
This means that the three sides of ∆ABC is congruent to the three corresponding sides of ∆DCB.
Therefore, ∆ABC is congruent to ∆DCB by the Side-Side-Side Congruence Theorem, which holds that of the three sides of one triangle is congruent to the three corresponding sides of another, then both ∆s are congruent.
u = b + ak
Solve for a
Thanks
Answer:
a = (u-b)/k
Step-by-step explanation:
to solve for a means to leave a on its own
u = b + ak
let’s subtract b from both sides to leave a on its own
u - b = ak
to leave a on its own we’ll divide both sides by k
a = (u-b)/k
Elijah made 100 brownies this week. He baked 4 more than three times the total he made last week. How many brownies did he bake last week?
Answer:
388 or 288
Step-by-step explanation:
this week in total = 100
4 more ( + ) 3 times ( x ) last
- - - - - -
100 - 4 = 96
96 x 3 = 288
either subtract or add
288 - 100 = 188
or add
288 + 100 = 388
hope this helps !
it may right or wrong :)
The average rate of change of g(x) between x = 4 and x = 7 is 7. Which statement must be true?
Answer:
x = 4 umm I am not sure but I think this is the answer
I’m about to go take my permit test do you think ill pass?
Answer:
You might. Just remember to study for it. Road signs are easy.
Step-by-step explanation:
To pass the written test, you must correctly answer at least 14 of the 20 questions asked, but you must correctly answer two of the four questions about road signs. This test is intended to help you prepare for the types of questions you will be asked on the written test. The questions on the actual test may vary.
You buy a circular rug with a diameter of 8 feet. How much floor space will the rug cover
Answer:
25.12
Step-by-step explanation:
8*3.14=25.12
Answer: 59.24 feet
Step-by-step explanation:
Try me IF you can !!!!!!!!!!!
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.
.
.
.
.
.
.
. 0+0=?
Answer: 0?
Step-by-step explanation:
PROBLEM: The chart shows the boy's basketball team's record of wins and losses for the last 5 years. What percent of the games did they win during the 5-year period? Round to the nearest percent. Years Wins Losses 7 4 2 5 6 3 8 3 4 9 2. 5 10 1 A. 71 % B. 36% C.31% D. 29%
Answer:
Option A:71%
Step-by-step explanation:
add wins, 7+5+8+9+10=39add losses 4+6+3+2+1=16add wins and Losses, 39+16=55do wins divided by total games, 39/55=70.909091round up to 71%Pythagorean theory 2in 4in
Estimate 39 divided by 5
ummm.. i think its 7.8?
The value of the division of the number 39 by 5 is 7.8.
A mathematical procedure called division involves dividing a quantity or number into equal pieces or groups. It is used to calculate how many times one number (the divisor) may be subtracted from another (the dividend) in order to get an accurate answer or a quotient. It is the opposite operation of multiplication.
To estimate 39 divided by 5, we can use rounding to simplify the calculation.
Round 39 to the nearest multiple of 5. In this case, 39 is already a multiple of 5, so we don't need to round it.
Divide the rounded number by 5. Since 39 is already a multiple of 5, we can directly divide it by 5.
39 ÷ 5 = 7.8
So, an estimated value for 39 divided by 5 is 7.8.
To know more about division follow
https://brainly.com/question/30126004
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A family wants to rent a car to go on vacation company a charges $70.50 and $.14 per mile Company B charges $40.50 and $.10 per mile how much more does company A charge for X Miles then company B
Answer:
15+0.04x
Step-by-step explanation:
A service center charges a fee of x dollars for an oil change plus y dollars per quart of oil used. A sample of its sales record
is shown.
1 Customer Oil Tank Size
(quarts)
DC
Total
Cost
$22 45
$25.45
3
Write a system of linear equations that represents this situation.
Answer:
x + 5y = 22.45
x + 7y = 25.45
Step-by-step explanation:
Given:
Customer A oil tank size = 5 quart
Customer B oil tank size = 7 quart
Total cost for A = $22.45
Total cost for B = $25.45
Find:
Equation
Computation:
So,
x + 5y = 22.45
x + 7y = 25.45
1. Describe how the graph of y= x2 can be transformed to the graph of the given equation.
y = x2 + 8
Shift the graph of y = x2 up 8 units.
Shift the graph of y = x2 right 8 units.
Shift the graph of y = x2 left 8 units.
Shift the graph of y = x2 down 8 units.
Answer:
Step-by-step explanation:
Please write y = x^2. The " ^ " symbol indicates exponentiation.
Here's how we get from the graph of y = x^2 to the graph of y = x^2 + 8:
Graph y = x^2. Now translate the entire graph 8 units up.
Which is (are) the roots of -12x^2=60x+75
1. x=+/-2.5
2.x=3, -2.5
3.x=-2.5
4.x=0, 3
Answer:
x= -5/2 or -2.5
Step-by-step explanation:
-12x^2=60x+75
change to -12x^2-60x-75=0
5x – 2 = 13
..........ASAP
Answer:
x=3
Step-by-step explanation:
The bangrito
90% of 133 is equal to (0.9) ⋅ 133
Answer:
119.7
Step-by-step explanation:
90% of 133 = 0.9 * 133
= 119.7
jack is thinking of two whole numbers
the sum of the number is 13
the difference between the numbers is 1
what is the product of the numbers
Answer:
Their product is 42
Step-by-step explanation:
Let the numbers be A and B
Such that:
[tex]A + B = 13[/tex]
[tex]A - B = 1[/tex]
Required
Determine A * B
Add both equations together:
[tex]A + A + B - B = 13 + 1[/tex]
[tex]2A = 14[/tex]
Solve for A
[tex]A = 7[/tex]
Substitute 7 for A in the second equation
[tex]7 - B = 1[/tex]
Make B the subject
[tex]B = 7 - 1[/tex]
[tex]B = 6[/tex]
Hence,
A = 7 and B = 6
So:
[tex]A * B = 7 * 6[/tex]
[tex]A * B = 42[/tex]
The product of the two numbers will be 42.
Let the two numbers be A and B
A + B = 13
A - B = 1
A = 1 + B.
Therefore, since A + B = 13, then (1 + B) + B = 13
1 + 2B = 13
2B = 13 - 1
2B = 12
B = 6
A = 6 + 1 = 7
Since the numbers are 6 and 7, then multiplying them is 42.
Read related link on:
https://brainly.com/question/20156549
The current, I, varies inversely to the resistance, R. If the current is 250 milliamperes
when the resistance is 5 ohms, find the current when the resistance is 20 ohms.
a) 124.5 milliamperes
b) 50 milliamperes
C)62.5 milliamperes
d) 1250 milliamperes
Answer:
C
Step-by-step explanation:
First find the voltage which is current times resistance. Convert milliamperes to amperes. Divide 250/1000 because amperes are 1000 times smaller. That results in 0.25. So multiply 0.25 A by 5 ohms. That is 1.25. Now divide 20 by 1.25 which is 0.0625. Convert that to millamperes by multiplying by 1000. That gives you 62.5 millamperes.
please help me asap
4x + 5 = 2x + 9, find the value of x
Answer:
x =2
Step-by-step explanation:
4x - 2x = 9-5
2x = 4
x = 4
Solve the equation.
Give your simplified answer as an improper fraction.
3(x - 1) = 2(3 – x)
? you
Answer:
3(x_1)=2(3_x)
or,3×_3 =6_2×
or,3×+2× =6+3
or,5× =9
or,× =9/5
Answer:
3(x-1)=2(3-x)
3x-3=6-2x
3x+2x=6+3
5x=9
divide both sides by 5
Answer x=9 5Step-by-step explanation:
multiply 3 by x -1 and x 3 x - 1
step 2: after simplifying collect like terms
solve from there
Help me out! Brainliest if you give me a valid answer & explanation!
Q: Find the area of the shape below!
Answer:
Answer is 131 square ft
Step-by-step explanation:
You need to split the shape into two
12 times 8 equals 96
7 times 5 equals 35
Add together and get answer of 131
Hope I could help! Have a great day!
An electrician charges $50 for the first hour and $5.50 for each additional hour. Write an equation to represent the amount the electrician will earn
Answer:
50+5.50x
Step-by-step explanation:
I really hope this helps.
Caleb has 76 apples. He wants to bake as many pies as he can. If it takes 8 apples to make each pie, how many apples will he use? How many apples will not be used?