Answer:
-2x^2-6x+1
Step-by-step explanation:
-1(2x^2+6x-1)
-2x^2-6x+1
I need help finding surface area
x + y = 95. and y is 2/3 of x. find x and y.
Answer:
{x,y}={60,35}
Step-by-step explanation:
// Solve equation [2] for the variable x
[2] x = y + 25
// Plug this in for variable x in equation [1]
[1] (y +25) + y = 95
[1] 2y = 70
// Solve equation [1] for the variable y
[1] 2y = 70
[1] y = 35
// By now we know this much :
x = y+25
y = 35
// Use the y value to solve for x
x = (35)+25 = 60
Answer:
x=57
y=38
Step-by-step explanation:
(1): x+y=95
(2): y=2/3x
substitute y=(2/3)x in equation (1):
x+(2/3)x=95
Multiply both sides by 3
3x+2x=285
5x=285
Divide both sides by 5
x=285/5
x=57
substitute x=57 in equation (2):
y=2/3×57=38
hence: x=57 , y=38
If you're solving a quadratic equation by factoring
what would the factorization of f(x)=2x^2+15x+7
Answer:
(2x+1)(x+7)
Step-by-step explanation:
Please help + show work
Answer:
8.4
Step-by-step explanation:
42/5 = 8.4
Each value is multiplied by 8.4.
Have an amazing day!
PLEASE RATE!
One number is 3 less than 4 times a second number. The difference of the first number and twice the second number is 7. What are the two numbers?
Answer:
x = -11, y = -2
Step-by-step explanation:
There's two equations. Let's say the first number is x, and the second number is y. Then, there is 4y-3 = x, and 2y-x = 7. We plug in 4y-3 for x into the second equation, and we get 2y - (4y-3) = 7. Solving more gets us -2y + 3 = 7. thus, -2y = 4, meaning y = -2. We plug back into the second equation, getting -4 - x = 7. This 11 = -x, or x = -11.
Express (x+3)^2 as a trinomial in standard form.
Answer:
x^2+6x+9
Step-by-step explanation:
(x+3)^2
(x+3)(x+3)
x^2+3x+3x+9
x^2+6x+9
What is the solution to the equation:
x^3=64
PLS EXPLAIN 4 BRAINLIEST
Answer:
x = 4
Step-by-step explanation:
In this equation, x is being cubed to equal 64. When x is being cubed, it means that x is multiplied by itself 3 times to get 64. Thus, we have to find which number to the power of three = 64.
1^3 = 1 x 1 x 1 = 12^3 = 2 x 2 x 2 = 83^3 = 3 x 3 x 3 = 274^3 = 4 x 4 x 4 = 64Therefore, x = 4.
Equation: 3√64 = x
In case you needed it
This so happens to be a perfect cube
Cube = A number raised to the power of 3
1 x 1 x 1 = 1
2 x 2 x 2 = 8
3 x 3 x 3 = 27
4 x 4 x 4 = 64
So therefore, x = 4
Hope this helped you!
if 7 is mean of 10,3,4,a,6,9,10. Find the value of a
Answer:
Step-by-step explanation:
Mean=((4+10+3+6+9+10+a)/7)=7
=>42+a=49
=>a=7Mean=((4+10+3+6+9+10+a)/7)=7
=>42+a=49
=>a=7
Answer:
a = 7
Step-by-step explanation:
Given:
7 is mean of 10,3,4,a,6,9,10
To Find:
Value of a
Solve:
Mean → [tex]\frac{(4+10+3+6+9+10+a)}{7}=7[/tex]
⇒ 42+a=49
Subtract 42 from both sides
x + 42 - 42 = 49 - 42
Simplify
⇒ a=7
~Learn with Lenvy~
Find the common factor of the polynomials 5x3+40x2+80x,x4-256
Answer:
(x + 4)
Step-by-step explanation:
5x³ + 40x² + 80x, x^4 - 256
5x ( x² + 8x + 16)
5x (x + 4) (x + 4)
x^4 - 256
a² - b² = (a + b) (a - b)
x² - 4² = (x + 4) (x - 4)
(x² + 16) (x + 4) (x - 4)
I hope this helps!
PLEASE HELP!!
The table below shows how much money you have in savings each week. Answer the questions below
Liquid A has a density of 1.42 g/cm³
7 cm³ of liquid A is mixed with 125 cm of liquid B to make liquid C.
Liquid C has a density of 1.05 g/cm³.
Find the density of liquid B.
Give your answer correct to 2 decimal places.
Step-by-step explanation:
if I understand correctly, then we are mixing 7 cm³ of liquid A with 125 cm³ of liquid B to a liquid C.
A has a density of 1.42 g/cm³.
B has a density of x g/cm³.
the resulting C has a density of 1.05 g/cm³.
the first thing we see is the quantity of C :
C = A + B = 7 + 125 = 132 cm³
what "comes in" must also "come out" again.
there is no mentioning of a chemical reaction, that might cause a change of volume or mass of the mixture.
so, the whole is exactly the sum of its ingredients.
now about mass and density :
as also the mass (g) of the resulting C must be the same as the sum of the masses of A and B, we multiply the density by the quantity of every liquid to get the mass (g). and that is how we get then the missing density of B :
7×1.42 + 125x = 1.05×(7+125)
9.94 + 125x = 1.05×132 = 138.6
125x = 128.66
x = 1.02928 ≈ 1.03 g/cm³
Please help me soon as possible !!!!!!!!!!
Select the correct answer from each drop-down menu.
A mother tracks the duration of her baby's two daily naps for a few weeks. The mean time and variance, in minutes, for each nap are recorded in
the table. On average the baby takes a longer nap for the (second nap/first nap) the length of the baby’s nap varies more in the (second nap/first nap)
Answer:
second nap,second nap
Step-by-step explanation:
just took it on plato and got 100%
Using a p-value of .05 means that there is a 95% chance that the results of a study are truly statistically significant. This means that there is still a 5% chance those results are due to chance. This, combined with ________, are two main contributing factors to the reproducibility crisis.
Step-by-step explanation:
”. What this means is that there is less than a 5% probability that the results happened just by random chance, and therefore a 95% probability that a results reflects a meaningful pattern in human psychology. We call this statistical significance, and, statistically speaking, this is a pretty high standard
If this means that there is still a 5% chance those results are due to chance. This, combined with publication bias , are two main contributing factors to the reproducibility crisis.
What is publication bias?When the results of research investigations affect whether or not they are published, it is known as publication bias.
It alludes to the propensity of academics, journals and other interested parties to publish studies with statistically significant or favourable outcomes while omitting or underreporting those with non-significant or unfavourable outcomes.distorted and incomplete.
Learn more about publication bias here:https://brainly.com/question/25877200
#SPJ3
which answers are which?
Answer:
Triangle A and B= Acute, Triangle C= Right, and Triangle D= Obtuse
Step-by-step explanation:
Acute= Less than 90 degrees
Right= 90 degrees exactly
Obtuse= More than 90 degrees
You look at the measurements provided and determine your answer.
Fifteen less than the product of three and a number is thirty-six.
what is this in an equation?
Answer:
Let the unknown number be x,
equation would be :- 3x - 15 = 36
I'm suck on this question can anyone help me
with it Jina has ridden 18 miles of a bike course. The course is 60 miles long. What percentage of the course has Jina ridden so far?
Answer:
30%
Step-by-step explanation:
percentage of the course she has ridden = 18/60 ×100
=0.3×100=30 %
HELP PLEASE!!!! WHO WANTS BRAINLEST!!b
Answer:
3/13
Step-by-step explanation:
number of balloons that are green AND shaped like a dog (3) over the TOTAL number of balloons (13)
i need help finding the answers on this question there is more than one
Answer:
number 1,2 and 3
hope it will help you.
if it is wrong then sorry
Answer:
Here's the correct answers for your queries.
But the last option is not correct because z° and y° do not collectively form 90° which is the complementary angle. And the values are also provided.
Therefore,
The Correct Answers Are:
√A
√B
√C
But not D.
A bicycle store cost 4500$ per month to operate. The store pays an average of 35$ per bike. The average selling price of each bike is 125$.How many bicycles must the store sell each month to break even
Answer:
50
Step-by-step explanation:
let x be the no of bicycles to be sold
125x = 4500 + 35x
125x-35x = 4500
90x = 4500
x = 50
to exactly match the expenditure, atleast 50 bikes have to be sold
Find the area of the irregular figure.
5 in.
4 in.
12 in.
A = [? ]in.2
5 in.
7 in.
11 in.
Answer:
155
Step-by-step explanation:
⚠️PLEASE ANSWER ASAP⚠️
Justin spent a total of $15 ice skating. He rented ice skates for $4.50 and skated for 3 hours. Write an equation to determine the cost per hour, h, to ice skate.
Answer:
3h+4.50=15
We know that she skates for 3 hours, but we don't know the cost per hour so is the "h". He pays a start up $4.50 for the ice skates. And he spend $15 in total for ice skating.
Hopefully that helps. Have a great night! Or day!
Bianca took out a $2,600 unsubsidized Stafford loan. She will be attending school for four years, and she wishes to have the loan paid off five years before its normal ten-year duration is finished. The loan has an interest rate of 6. 2%, compounded monthly. How much will she have to pay monthly to avoid interest capitalization? a. $12. 40 b. $19. 29 c. $13. 43 d. $17. 36 Please select the best answer from the choices provided A B C D.
Answer:
c. $13. 43
Step-by-step explanation:
Here's the simple interest formula: Interest = P x R x N. P = Principal amount (the beginning balance). R = Interest rate (usually per year, expressed as a decimal). N = Number of time periods (generally one-year time periods).
8.
Which fraction would make this equation true? 5 x ?/? = 6 1/4
3/4
4/4
5/4
I really need help with this or i'll get and F
Answer:
21 centimeters
Step-by-step explanation:
40 millimeters is 4 centimeters and 25-4 is 21.
Side Note: I used to have to do math iready but im in algebra now so not anymore.
Answer:
the answer is 15
Step-by-step explanation
f(x)=-x^2+6 f(x)=−x 2 +6 \text{Find }f(-1) Find f(−1)
Answer:
7
Step-by-step explanation:
[tex]f(x) = x^{2} + 6[/tex]
[tex]f(-1) = (-1)^{2} + 6\\f(-1) = 1 + 6\\f(-1) = 7[/tex]
What is the area of this figure?
You can fine the area of the figure by width times height
Why do teachers use a percent when grading school work?
Answer:
easier to grade and to calculate average
Step-by-step explanation:
How many cameras will be necessary to cover the entire store? 6 9 12 18
There are 18 cameras that will be necessary to cover the entire store, the correct option is D.
What is the unitary method?A unitary method is a method by which we can find the value of one unit from the value of many units and the value of many units from the value of one unit.
Given
Marina wants to install security cameras in her store, which has dimensions 48 feet by 48 feet.
Each camera can view an area of approximately 128 ft2, with a viewing area shaped like a right triangle.
The distance between grid lines is 4 feet.
From the information given, the area of the store roof will be:
= 48 × 48 = 2304 ft²
The area viewed by the camera = 112.5ft²
The number of cameras that will be necessary to cover the entire store is;
[tex]= \dfrac{2304}{128}\\\\= 18[/tex]
Hence, there are 18 cameras that will be necessary to cover the entire store.
To know more about the unitary method click the link given below.
https://brainly.com/question/9337121
Answer:
There are 18 cameras that will be necessary to cover the entire store. .aka D
Step-by-step explanation:
Edge2023
The arc length of arc DF measures 30 m. What is the area of the circle?
Answer:
Step-by-step explanation:
Givens
arc length DF = 30
pi = 3.14
Comment
The problem is that it looks to me like you have marked DF = 30. That's not what is given. What you are given is a part of the circumference is equal to 30.
Solution
The formula you should be using 100/360 * 2 * pi * r You should be solving for r.
30 = 100/360 * 2 * pi * r Multiply both sides by 360
30*360 = 100 * 2 * pi * r Combine left and right
10800 = 200* 3.14 * r
10800 = 628 * r Switch Divide both sides by 628
628 * r/ 628 = 10800 / 628
r = 17.197
Answer
Area of the circle = pi*r^2
Area of the circle = 3.14 * 17.197^2
Area of the circle = 928.66 m^2