Answer:
x=-0.35 or x=2.85
Step-by-step explanation:
2x^2-5x+1=3
2x^2-5x-2=0
use quadratic formula
x=(5±√41)/4
decimals = x=-0.35 or x=2.85
Answer:
option D
Step-by-step explanation:
I took the test
At a carnival, the cost to play a bowling game is $2, plus $0.40 for each attempt to knock over the pins. Which inequality would you use to find the number of attempts you can make if you have less than $4.30
Answer:
C
Step-by-step explanation:
What do I do with e^y in the differential equation dy/dt =(2t)/(e^y)?
As you said, the equation is separable:
dy/dt = 2t / exp(y)
exp(y) dy = 2t dt
Integrate both sides:
∫ exp(y) dy = ∫ 2t dt
exp(y) + C₁ = t ² + C₂
Move the constant terms to one side. When you add them together, you get another constant, so you can ignore the subscript altogether:
exp(y) = t ² + C
Solve for y explicitly by taking the logarithm of both sides:
ln(exp(y)) = ln(t ² + C )
y = ln(t ² + C )
C can be any number; if it happens to be 0, then you have
y = ln(t ²) = 2 ln(t )
so B is the correct choice.
You can also approach this from the opposite angle: Assume y is one of the given solutions, then substitute it into the ODE. (Bit more trial-and-error involved, so not a good idea if you're short on time.)
For example, if y = 2 exp(t ) as in choice A, you have dy/dt = 2 exp(t ), so the ODE would become
2 exp(t ) = 2t / exp(2 exp(t ))
which is clearly (I hope) not true.
Help plssssss!!!!!!!!!!
Answer:
-4
Step-by-step explanation:
Is the following expression greater than, less than, or equal to zero? (a^2+b^2)/(a^2+b^2+1)
so I think it's equal to but can someone verify it for me?
Answer:
is equal cuz a will be cut and be will be cut so what is left 1 is left so it is equal plz Mark me as the brainliest and thank me
PLS HELP. URGENT!!!! I’ll give whatever points
ILL GIVE YOU BRAINLIEST AND ALL MY POINTS PLS HELP MEEE Tysm Algebra
Answer:
I think it is the second one haha loll
A jewelry box is shaped like a cube. One side of the box is 6.5 inches long. What is the volume of the jewelry box?
Answer options:
-274 in3
-274.5 in3
-274.375 in3
-274.625 in3
Answer:
274.625 in^3
Step-by-step explanation:
equation for volume LxWxH
6.5x 6.5x 6.5= 274.625
What is the equation of a line .........
Answer:
y = -x + 2, B is the answer
Step-by-step explanation:
If slope is -1, the equation is y = -x+b
Plug in (3,-1) into that equation.
-1 = -3 + b
b = 2
Pl S help pls np helps helpss
Answer:
2 dollars each I think........
Math help/ battle !!
Answer:
The missing angle is 40 degrees
Step-by-step explanation:
Tan = opposite / adjacent
Tan ? = 24 / 29
24 / 29 = 0.8275
Tan-1 of 0.8275 is 39.610
Round to the nearest degree
39.610 = 40
Answer:
Step-by-step explanation:
Here you have a right triangle with the side lengths 24 and 29 and are asked to find the measure of the smallest angle.
In cases like this you should ask yourself which trig function includes the lengths of the legs (that is, the lengths of the side opposite the angle and the side adjacent to the angle). That would be the tangent function, and so:
tan (?) = (opposite side) / (adjacent side)
Here, tan x = 24/29 = 0.691. Note: I used my TI-83Plus calculator to determine that the measure of angle x in radians is 0.691.
The unknown angle is 0.691 radians, or (multiplying that by the conversion factor (180/pi) ) 39.6 degrees. To the nearest degree, that'd be 40 degrees.
i need hell with this pleasee
There are 30 teachers in a school.It is anticipated that the number of teachers next year will increase by 10%. How many teachers should be there next year?
Answer:
33
Step by step explanation of the answer
people in here again and again. I think this is the last question
Answer:
2.4 cm
Step-by-step explanation:
We know the length of segment AB and the length of segment BC. To find their midpoints, we can divide their length by 2.
Let's find the midpoint of AB.
Segment AB: 10 cm Midpoint of AB: 10/2 = 5 cmNext let's find the midpoint of BC.
Segment BC: 5.2 cmMidpoint of BC: 5.2/2 = 2.6 cmIn order to find the difference between these midpoints, we can subtract the midpoint of AB by the midpoint of BC.
5 cm - 2.6 cm = 2.4 cmTherefore, the difference between the midpoints of AB and BC is 2.4 cm.
Isaiah is going to invest $94,000 and leave it in an account for 16 years. Assuming the interest is compounded daily, what interest rate, to the nearest tenth of a percent, would be required in order for Isaiah to end up with $273,000?
Answer:
Step-by-step explanation:
r=6.7
What is a unit fraction of 4/5
Answer:
1/5
Step-by-step explanation:
Need an explanation pls
A number increased by 6 is 13. What is the number?*
Answer:
7
Step-by-step explanation:
Simply subtract 6 from 13.
13-6=7
Hope this helps! :)
Name the angles and sides of each pair of triangles that are congruent.
Answer:
Step-by-step explanation:
Corresponding parts of congruent triangles are congruent
WX ≅ DC
XY ≅ CY
WY ≅ DY
∠WXY ≅ ∠DCY
∠XWY ≅ ∠CDY
∠WYX ≅ ∠DYC
Which pair of adjacent angles is supplementary?
A. Pair A
B. Pair B
C. Pair C
D. Pair D
Answer:
correct answer
Step-by-step explanation:
What is congruent in this problem?
Answer:
Step-by-step explanation:
SVT and TVU
Hope that helps!
please help
find the value of x in the isosceles triangle shown below.
V80
V80
Answer:
Option A. x = 8
Step-by-step explanation:
Please see attached photo.
From the attached photo,
we shall determine the value of y. This can be obtained by using pythagoras theory as illustrated below:
(√80)² = 8² + y²
80 = 64 + y²
Collect like terms
80 – 64 = y²
16 = y²
Take the square root of both side
y = √16
y = 4
Finally, we shall determine the value of x. This can be obtained as follow:
From the attached photo,
x = 2y
but:
y = 4
Therefore,
x = 2y
x = 2 × 4
x = 8
This month, 25 dogs were brought in to the animal shelter. Leo predicts that next month will have 40% more dogs brought in than this month.
How many more dogs does Leo think will be brought in?
dogs
How many total dogs would that make?
dogs total
Answer:
35 dogs
Step-by-step explanation:
40% more than 25 is 35
Write ways to represent the fraction 10/9.
Answer:
mixed number form 1 1/9
decimal form 1.11111111111111 it goes on forever
percent form 111.111111111111% it goes on forever (again)
Step-by-step explanation:
i hope that helps!
Answer:
1 1/9
Step-by-step explanation:
10/9, you get 1 as the whole number.
You have a 1 left over when dividing 10 and 9. the 1 will be over 9.
Giving you 1 as the whole number and 1/9 next to it.
Hello can someone please help me with this
y/3 + 2 = 14 I need help
Answer:
y = 36
Step-by-step explanation:
[tex]\frac{y}{3}+2 = 14\\\\\frac{y}{3}=14-2\\\\\frac{y}{3}=12\\\\y = 12*3\\\\y = 36[/tex]
Can y’all recount a story where you were proud of yourself for making a good decision when it was really difficult? Thanks!
Answer:
i was proud of myself when I finally figured out a difficult math problem. I didn't even ask for help. it was a hard time for me but I eventually came through.
Write the equation of the line that passes through the points (4,7) and (8,6). Put
your answer in fully reduced point-slope form, unless it is a vertical or horizontal line.
Answer:
y - 7 = [tex]-\frac{1}{4}[/tex] (x - 4)
Step-by-step explanation:
Find Slope: m = [tex]\frac{y_{2-}y_{1} }{x_{2-}x_{1} }[/tex]
m = [tex]\frac{6-(7)}{8-(4)}[/tex]
m = [tex]\frac{-1}{4}[/tex]
Point Slope Form: y - [tex]y_{1}[/tex] = m ( x - [tex]x_{1}[/tex] )
y - 7 = [tex]-\frac{1}{4}[/tex] (x - 4)
Please help!!
Find the value of x to the nearest tenth.
Answer:is it 1
Step-by-step explanation:
a b c or d thanks for helping me
Answer:
either A,B,C, or D?
Step-by-step explanation:
The rectangle shown has a perimeter of 98 cm and the given area. Its length is 7 more than 5 times its width. Write and solve a system of equations to find the dimensions of the rectangle.
Answer:
35 is its width and 63 is its length.
Step-by-step explanation:
7 x 5 = 35 and 98 - 35 equals 63 which is the length.