21 + 39 = 60 minutes ( 1 hour)
So for the remaining time she lifted weights for about 2 hours.
3 hours = 180 minutes
180 - 60 = 120
About 66% of the remaining time Yael used to lift weights.
To be accurate 66.6% ( the last 6 repeating a infinite amount of time aka it doesnt end)
Hep help help help hell
Answer:
80/100=0.8
Step-by-step explanation:
please mark me as brainlest
solve the equation: x^3-2x^2=0
x = 0 and x=2
Step-by-step explanation:
[tex] {x}^{3} - {2x}^{2} = 0[/tex]
[tex] {x}^{2} (x - 2) = 0[/tex]
[tex] {x}^{2} = 0 \\ x = 0[/tex]
[tex]x - 2 = 0 \\ x = 2[/tex]
Please rate BRAINLIEST
What should be the first step to solve the equation?
2x + 9(x - 1) = 8(2x + 2) - 5
Combine like terms on each side of the equation.
Use the distributive property on each side of the equation.
Use the subtraction property of equality to subtract 5 from each side of the equation.
Use the addition property of equality to add 2x to each side of the equation.
7
ron goes to a shop to buy some notebooks. the shopkeepers informs him that 2 notebooks would cost $90. can you find the cost of 5 notebooks with the help of unitary method
Answer: $225
Step-by-step explanation:
Each Notebook costs 45 dollars, this can be found by taking the cost of 2 (90$) and dividing it by 2
Now just take the cost per notebook (45) and multiply it by the amount wanted (5) and your total should come out to $225
- Gage Millar, Algebra 2 Tutor
Answer:
$225 = 5 note books.
45 = 1 note book
Step-by-step explanation:
90/2 = $45 EACH
Unitary method means find 1 part first.
Therefore,
1 part = 45
45 x 5 = 225
$225 = 5 note books.
If p(x)=2x2-1, find p(-3)
THE ROOM NUMBER OF THE TWO ADJACENT CLASSROOMS ARE TWO CONSECUTIVE ODD NUMBERS IF THE SUM IS 216FIND THE CLASSROOM NUMBERS
Answer:
Step-by-step explanation:
To make sure that you are adding 2 odd numbers, the first one is 2x - 1 and 2x + 1
Their sum is 216
Equation
2x - 1 + 2x + 1 = 216
Solution
2x - 1 + 2x + 1 = 216 Combine like terms on the left
4x = 216 Divide by 4
4x/4 = 216/4 Combine
x = 54
Answer
2x - 1 = 2*54 - 1 = 108 - 1 = 107
2x + 1 = 2*54 + 1 = 108+1 = 109
The two consecutive odd numbers are 107 and 109
someone plzzzzzzzzzzzzzzzzzzzzzz
Answer:
3/5
Step-by-step explanation:
deon swam 4 kilometers against the current
Answer:
DEON is awesome at swimming
Step-by-step explanation:
good job deon
PLEASE HELP!!!!!
will mark brainliest!!!!!
20 points (looking for the reasoning) Jayden and Sheridan both tried to find the missing side of the right triangle.
A right triangle is shown. One leg is labeled as 7 centimeters. The hypotenuse is labeled as 13 centimeters.
Jayden's Work Sheridan's Work
a2 + b2 = c2 a2 + b2 = c2
72 + 132 = c2 72 + b2 = 132
49 + 169 = c2 49 + b2 = 169
218 = c2 b2 = 120
Square root 218 equals square root c squared. Square root b squared equals square root 120.
14.76 ≈ c b ≈ 10.95
Is either of them correct? Explain your reasoning.
Answer:
Step-by-step explanation:The problem is very hard to read. When using exponents, please add the "^" in front. For example, is 132 actually 132, or is it 13^2? The right triangle is not shown, so we really don't know which is the hypotenuse. Also be carefull with spacing. Making some assumptions, here is how the answer might look:
Both have the correct formula: a^2 + b^2 = c^2, assuming c is the hypotenuse.
If c is the hypotenuse, then the expression should be:
7^2 + b^2 = 13^2, or
49 + b^2 = 169
I like Sheridan's answer. So let's continue:
49 + b^2 = 169
b^2 = 169-49
b^2 = 120
b = 10.954 . . .
Yep, I'm on Sheridan's side. [That is, unless 72 is 72 and not 7^2, etc.]
PLEASE I NEED HELP ASAP!!
Aluminum bronze consists of copper and aluminum, usually in the ratio of 10:1 by weight. If an object made of this alloy weighs 77 pounds, how many pounds of aluminum does it contain?
i don't know how to do math lol
Answer:
88 I think and if not that then 98 but I'm petty sure it's 88
Step-by-step explanation:
Leila Runs at 12 miles per hour. Find the Number of Miles she can travel if she runes for t hours
Answer:
y=12t
Step-by-step explanation:
I'm trying to find the explicit form of an equation after performing an integration. I'm a bit rusty.
ln|y| = C - cos(x)
C is an arbitrary constant.
Is it:
y = e^(c-cos(x))
or because it's an arbitrary constant, can it be written:
y = C - e^(cos(x))
Thanks.
No, it should be written as
[tex]y = Ce^{-\cos x}[/tex]
Provided that y ≠ 0, both solutions
[tex]y = e^{C-\cos(x)}[/tex]
and
[tex]y = Ce^{-\cos(x)}[/tex]
are correct. The other solution you provided,
[tex]y = C - e^{\cos(x)}[/tex]
is not.
The only difference between the "valid" solutions lies in the particular value of the arbitrary constant C.
Suppose y(0) = Y ≠ 0 is given as an initial condition. Then in the first solution,
[tex]Y = e^{C - \cos(0)} \implies \ln|Y| = C - 1 \implies C = \ln|Y| + 1[/tex]
In the second solution,
[tex]Y = C e^{-\cos(0)} \implies Y = Ce^{-1} \implies C = eY[/tex]
But both solutions are the same, since
[tex]y = e^{\ln|Y| + 1 - \cos(x)} = e^{\ln|Y|} e^1 e^{-\cos(x)} = eY e^{-\cos(x)}[/tex]
Find the area of the parallelogram.
11 cm
20 cm
Find the slope of a line parallel to the line y = 7
Answer:
y = 7 is a horizontal line with slope 0
Any parallel line will also have slope 0
Step-by-step explanation:
Need someone to verify the answer for me so i can know if i get it right or not. thanks<3
x = 100
why?
because,
(76 + 124) ÷ 2 = 200 ÷ 2
= 100
your welcome :)
give me the brainliest please thank you
help plsssssssrjeieiedidj
Answer:
C
Step-by-step explanation:
when x=8
and when x= -12
5 1/10 x 1/6 pls helppp
Answer:
51/60
Step-by-step explanation:
First, I'll convert 5 1/10 into an improper fraction to make it easier to work with. I get 51/10. Then, I multiply the two fractions like so:
51/10 * 1/6 = 51/60
You multiply the numerators (the numbers on top) and the denominators (the numbers on the bottom) separately.
So the answer is 51/60.
HELP AND DONT SEND LINKS IK WHAT UR TRYING TO DO
Answer:
-2 3/5, -9/4, 1.2, 7/4
Step-by-step explanation:
First, unmix the mixed numbers.
-9/4 = -2 1/4.
Which is greater?
1/4 vs. 3/5
Answer: 3/5 So...
-2 3/5 would be the least.
Then there would be -2 1/4
Then, it would be 1.2 because 1.2 is smaller than 7/4.
Therefore, this pattern would be the correct answer...
From Least to greatest=
-2 3/5, -9/4, 1.2, 7/4
-kiniwih426
Graph the function h (x) = -3x-1.
Consider
x - 3, X < 0
3, x >0
The graph of the functions above is shown.
Answer:
It is true. This is the graph.
someone please answer!!
Answer: x=120 degrees
Step-by-step explanation: Since this triangle is equilateral, each of its angles equals 60 degrees. The line that x is on is equal to 180 degrees, so subtracting 60 from 180 will give you 120 degrees for x.
Answer:
x=180°-60°=120°, bc In an equilateral triangle, the angles are equal and equal to 60°
Step-by-step explanation:
not easy help me please
[tex]▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪[/tex]
In the number line attached in my attachment,
The red line represents point :
[tex] \dfrac{10}{2} [/tex]The blue line represents point :
[tex] \dfrac{ - 9}{2} [/tex]I hope it helps ~
$5400 at 3.6% compounded continuously for 5 years.
Answer:
A = $6,464.97
Step-by-step explanation:
Given the principal amount of $5,400, and an interest rate of 3.6% compounded continuously for t = 5 years:
Substitute the given values into the Continuous Compounding Formula:
[tex]A = Pe^{r*t}[/tex]
where:
P = principal = $5,400
e ≈ 2.7183 (irrational number)
r = interest rate = 3.6% or 0.036
t = time in years = 5
[tex]A = Pe^{r*t}[/tex]
[tex]A = 5400e^{(0.036*5)}[/tex]
[tex]A = 5400e^{0.18}[/tex]
A = $6,464.97
Therefore, the amount after compounding continuously for 5 years is $6,464.97.
show the solution 3x+7 ≤5x-9
1.1 Pull out like factors :
-2x + 2 = -2 • (x - 1)
2.1 Solve : -2 = 0
This equation has no solution.
A a non-zero constant never equals zero.
2.2 Solve : x-1 = 0
Add 1 to both sides of the equation :
x = 1
x = 1
Answer:
[tex]3x + 7 \leqslant 5x - 9 \\ 5x - 3x \leqslant 7 + 9 \\ 2x \leqslant 16 \\ x \leqslant \frac{16}{2} \\ \boxed{x \leqslant 8}[/tex]
So I know how to do division and all but I was wondering what’s the fastest way to get the answer since I have to find out how much 90 goes into 810?
Answer:
Well you need to do division. If you want to make it easier you can divide both numbers by 10 and get 9/81. Both will give you 9 as the answer
Answer:
810 devided by 90
Step-by-step explanation:
Fact family
Use either direct or synthetic substitution to evaluate the
following:
f(x)=2x3-2x2+2x-8 for f(1).
Points A and B are 100m apart on a coastline.
B is directly east of A.
A lighthouse is out at sea.
The bearing of the lighthouse is
164 degrees from A and
217 degrees from B
The angle of elevation of the top of the lighthouse from A is 27 degrees.
Find the distance of the lighthouse from A.
Find the height of the lighthouse.
Points A, B and the lighthouse are related by angles of elevation.
The distance of the lighthouse from A is 97.4 mThe height of the lighthouse is 79.9 mFrom the complete question (see attachment), we have:
[tex]\mathbf{\angle A = 164 - 90}[/tex]
[tex]\mathbf{\angle A = 74}[/tex]
[tex]\mathbf{\angle B = 270 - 218}[/tex]
[tex]\mathbf{\angle B = 52}[/tex]
[tex]\mathbf{\angle L = 180 - 74 - 52}[/tex]
[tex]\mathbf{\angle L = 54}[/tex]
(a) The distance between the lighthouse and A
This is calculated using the following sine ratio
[tex]\mathbf{\frac{a}{sin A} = \frac{b}{sin B} = \frac{c}{sin C}}[/tex]
So, we have:
[tex]\mathbf{\frac{AL}{sin B} = \frac{100}{sin L}}[/tex]
This gives
[tex]\mathbf{\frac{AL}{sin 52} = \frac{100}{sin 54}}[/tex]
Make AL the subject
[tex]\mathbf{AL = \frac{100}{sin 54} \times sin 52}[/tex]
[tex]\mathbf{AL = 97.4}[/tex]
The distance of the lighthouse from A is 97.4 m
(b) The height of the lighthouse
Considering triangle AHL, we have:
[tex]\mathbf{\angle H = 90 + 27 = 117}[/tex]
[tex]\mathbf{\angle A = 74 - 27 = 47}[/tex]
[tex]\mathbf{AL = 97.4}[/tex]
The height is then calculated using the following sine ratio
[tex]\mathbf{\frac{a}{sin A} = \frac{b}{sin B} = \frac{c}{sin C}}[/tex]
So, we have:
[tex]\mathbf{\frac{AL}{sin H} = \frac{HL}{sin A}}[/tex]
Make HL the subject
[tex]\mathbf{HL = \frac{AL \times sin A}{sin H}}[/tex]
This gives
[tex]\mathbf{HL = \frac{97.4 \times sin 47}{sin 117}}[/tex]
[tex]\mathbf{HL = 79.9}}[/tex]
Hence, the height of the lighthouse is 79.9 m
Read more about elevation and depressions at:
https://brainly.com/question/21137209
p=3.25x - x2/40,000 - 3000. find the product on level that produces a maximum profit
Answer:
I am a little bit more about it. the only one who has a great time to time, and I am a very good at the same time, and I will be a good person to person. I am a little while, but it will not have a
Step-by-step explanation:
great day for me to do it, but I think 2 the. follow the instructions for a couple of days. the the the the the other side of things to say, but I think I am going through my head. it will not be able to get the most of the most part, and