Answer:
x = ±2[tex]\sqrt[]{2}[/tex]-2
Step-by-step explanation:
x^2+4x-4=0
x^2+4x=4
x^2+4x+4=4+4
(x+2)^2=8
x = ±2[tex]\sqrt[]{2}[/tex]-2
Please answer this quickly it’s for a test!
Answer: I think its D, not positive though.
Step-by-step explanation:
Convert the fraction below into a percent: 9/15
Answer:
Your answer will be 60%
Step by Step explanation:
W know the GCF(greatest common factor) of 9 and 5 is 3 so
9÷3=3 15÷3=5 which make 3/5
We know that
3/5
is the same as
3÷5
Then using
Long Division for 3 divided by 5 gives us
0.6
Converting our number to a percentage:
0.6×100
=60%
find the value of given expression
[tex] \sqrt{66 \times 66} [/tex]
Answer:
[tex] \sqrt{66 \times 66} = 66[/tex]
Answer:
66 is the exact value of the expression
Step-by-step explanation:
Copy link
OPEN ENDED QUESTION
What operation(s) should come first when
solving?
Answer:
Multiplication and Division unless there are parentheses
Step-by-step explanation:
7.
Wendy is paid $12 per hour and plans to work between 30 and 35 hours per week. Identify the independent and dependent quantity in the situation. Find reasonable domain and range values.
A. weekly pay; hours worked; $360 to $420; 30 to 35 hours
B. hours worked; weekly pay; 30 to 35 hours; $360 to $420
C. weekly pay; hours worked; 30 to 35 hours; $360 to $420
D. hours worked; weekly pay; 30 to 35 hours; $0 to $420
Answer: I'm gonna go with B. hours worked; weekly pay; 30 to 35 hours; $360 to $420, because I had something similar to this
Wendy is paid $9 per hour and plans to work between 20 and 25 hours per week. Identify the independent and dependent quantity in the situation. Find reasonable domain and range values.
weekly pay; hours worked; 20 to 25 hours; $180 to $225
hours worked; weekly pay; 20 to 25 hours; $180 to $225
weekly pay; hours worked; $180 to $225; 20 to 25 hours
hours worked; weekly pay; 20 to 25 hours; $9 to $225
Step-by-step explanation:
The independent quantity is her pay and the dependent quantity is the hours she works in a week.
I believe the range would be 30 to 35 hours and the domain would be $360 to $450.
...................................................................................................................................................
Answer:
Part a) The independent quantity is the variable x (the number of hours) and the dependent quantity is the variable y (total paid)
Part b) Domain
Part c) Range
Step-by-step explanation:
Let
x------> the number of hours
y-----> total paid
The linear equation that represent this situation is
so
Part a)
The independent quantity is the variable x (the number of hours)
The dependent quantity is the variable y (total paid)
Part b) Find the domain
The domain is the interval-------->
All real numbers greater than or equal to hours and less than or equal to hours
Part c) Find the range
For
find the value of y
For
find the value of y
The range is the interval------->
All real numbers greater than or equal to and less than or equal to
...............................................................................................................................................
The dependent quantity would be the $12 per hour, while the independent quantities are 30 hrs/ week to 35 hours/ week.
The $12 per hour would become $360/week to $420/week.
The domain of the problem, with the unit of hrs/week, would be :30,31,32,33,34,35.
The Range of the problem, with the unit of $/week, would be : 360, 372, 384, 396, 408, 420.
...............................................................................................................................................
thank you lol i’m not smart sorry
Answer: 65
Step-by-step explanation: Sum of angles in triangles is always 180, we know one angle is 25 and another is 90, so 25 + 90 = 115, then 180 - 115 = 65.
Solve for x:
4.5x = 56.25
1. x = 60.75
2. x = 12.5
3. x = 253.125
Answer:
2. x = 12.5
Step-by-step explanation:
x=56.25÷4.5=12.5
Which estimation could be used to make sure the answer is reasonable?
Sofia mixed 3.15 L of grape juice with 4.75 L of cranberry juice. Her friends drank 3.95 L of the juice mixture.
How much juice was left over?
Answer: The amount left over was 4.05 L.
Estimation: 3.15 + 4.75 is about 7.
7 L – 4 L = 3 L
The amount left over was about 3 L.
Answer: The amount left over was 11.85 L.
Estimation: 3.15 + 4.75 is about 8 L.
8 L + 4 L = 12 L.
The amount left over was a little less than 12 L.
Answer: The amount left over was 3.95 L.
Estimation: 3.15 + 4.75 is about 8.
8 L – 4 L = 4 L
The amount left over was a little less than 4 L.
Let's go through each answer.
A.
Answer: The amount left over was 4.05 L.
Estimation: 3.15 + 4.75 is about 7.
7 L – 4 L = 3 L
The amount left over was about 3 L.
This is incorrect because 3.15+4.75 is closer to 8 than 7.
B.
Answer: The amount left over was 3.95 L.
Estimation: 3.15 + 4.75 is about 8.
8 L – 4 L = 4 L
The amount left over was a little less than 4 L.
This is correct because 3.15+4.75 is close to 8 and to find the amount left over you do have to subtract.
The correct answer is B.
Answer: The amount left over was 3.95 L.
Estimation: 3.15 + 4.75 is about 8.
8 L – 4 L = 4 L
The amount left over was a little less than 4 L.
Hope this helps!. If it helped, please rate, thank, and if it really helped, give brainliest. It helps me rank up. Thanks! :)
HELP ME ON GEOMETRY!!! PLZ
NO LINKS! > i will report.
Answer
I believe B.)8in3 is the right answer according to the square-cube law.
Step-by-step explanation:
A pumpkin patch charges a $5 entrance fee and $0.60 per pound for pumpkins. Which of the following represents the cost C, In dollars, for one person to enter the pumpkin patch and pick x pounds of pumpkin?
Answer:C=5+0.6x
Step-by-step explanation:
The equation that represents the total cost will be C = 0.60x + 5.
What is a linear equation?A relationship between two or more parameters that, when shown on a graph, produces a linear model. The degree of the variable will be one.
The linear equation is given as,
y = mx + c
Where m is the slope of the line and c is the y-intercept of the line.
A pumpkin patch charges a $5 entrance fee and $0.60 per pound for pumpkins.
Let x be the number of pounds of pumpkin and C be the total cost in dollars.
Then the equation that represents the total cost will be
C = 0.60x + 5
The equation that represents the total cost will be C = 0.60x + 5.
More about the linear equation link is given below.
https://brainly.com/question/11897796
#SPJ6
Can someone please help!!!!
DO NOT ANSWER IF YOU DON'T KNOW IT PLEASE!!!
whats the volume (5 points)
Need Answers Asap I will try to give brainlest if i have it
Answer:
9. 1,800 m/s
Step-by-step explanation:
450 ÷0.25 = 1800.
*Hope this helps*
WILL GIVE BRAINLIEST!
Given that ℓ1 ∥ ℓ2 and y = 20°, find x.
x =
°
AB is parallel to CD. Find the measure of each numbered angle.
Answer:
#4 angle 1 = 154 degrees
#4 angle 2 = 26 degrees
#5 angle 1 = 97 degrees
#5 angle 2 = 82 degrees
#5 angle 3 = 83 degrees
Step-by-step explanation:
The image displays which angles are the same on line equations like these using color coding.
In order to translate between the green angle and the pink angle you subtract it from 180.
Equation: 180 - angle type 1 = angle type 2
Ex: 180 - 154 = 26
A polygon with five sides is
Answer:
The answer is pentagon
O A. 120 cm3
B. 120 units3
C. 630 cm2
O D. 120 units
Answer:
the answer is B
hope this helps
Step-by-step explanation:
i did the math
Suppose a fair coin is tossed and the spinner below is spun one time. What is the probability of flipping heads and spinning a number greater than 2?
Answer:
3
Step-by-step explanation:
Answer:
3/10
Step-by-step explanation:
Order the sides or angles of each triangle from least to greatest.
Answer:
SU , UT , ST
Step-by-step explanation:
between 6 a.m. and noon the temperature Rose 12 degrees Farenheit to 4 degrees Fahrenheit
Answer:
that's not possible it can rise unless it is at negative 12
What equation(s) could represent the volume of the cylindrical barrel when completely filled with
water?
Answer:
Volume of cylinder = 1,156.57 cm³
Step-by-step explanation:
Given:
Radius R = 4 cm
Height of cylinder = 23 cm
Find:
Volume of cylinder
Computation:
Volume of cylinder = πr²h
Volume of cylinder = (22/7)(4)²(23)
Volume of cylinder = (22/7)(16)(23)
Volume of cylinder = 1,156.57 cm³
What number is 20% of 80
Answer:
16
Step-by-step explanation:
a trick that helps with percentages
if its 20% of 80, multiply 20 and 80 and then divide that by 100 so 1600 divided by 100. 16. hope this helps!!
The functions q and r are defined as follows.
q(x)=2x + 2
r(x)=-2x²-2
Find the value of r(q(2)).
Answer:
Step-by-step explanation:
[tex]r(x)=-2x^2-2\\ \\ q(x)=2x+2\\ \\ r(q(x))=-2(2x+2)^2-2\\ \\ r(q(2))=-2(2(2)+2)^2-2\\ \\ r(q(2))=-2(6^2)-2\\ \\ r(q(2))=-2(36)-2\\ \\ r(q(2))=-72-2\\ \\ r(q(2))=-74[/tex]
find the value of given expression
[tex] \sqrt{900} [/tex]
Answer:
30 Ans...............
Type the correct answer in each box.
,
then a = and b = .
Answer:
a = 0, b = -15
Step-by-step explanation:
Given the following complex number;
x1 = 3(cosπ+isinπ)
x2 = 5(cosπ/2 - isinπ/2)
x1x2 = 15(cosπcosπ/2 - icosπsinπ/2+isinπcosπ/2 -i²sinπsinπ/2)
x1x2 = 15(0 - i(-1)+0 -0)
x1x2 = 15(-i)
x1x2 = -15i
x1x2 = 0-15i
Since
0 - 15i = a+ bi
Compare
a = 0
-15- = bi
b = -15
Hence a = 0, b = -15
How do I write the equation of a line that goes through the points (9,-8) and (6,-8)???
Answer: y=-8
Step-by-step explanation: I will assume you want the solution in slope intercept form. First, we must find the slope of this line. Since between the two points the y value doesn't change, this means our line is horizontal. So far, we have y=0x+b, since anything multiplied by 0 is zero, we can get rid of that. This line is a horizontal line, and we have the y value, so out equation is y=-8.
HELP PLEASE!!!! No files btw
Jubal wrote the four equations below. He examined them, without solving them, to determine which equation has no solution.
7 x + 1 = 7 x+ 1. 3 x + 2 = 3 x minus 2. 4 x + 1 = 3 x + 8. negative 2 x minus 1 = negative 2 x minus 1.
Which of Jubal’s equations has no solution?
A. 7 x + 1 = 7 x+ 1
B. 3 x + 2 = 3 x minus 2
C. 4 x + 1 = 3 x + 8
D. negative 2 x minus 1 = negative 2 x minus 1
The answer is B! :)
Gill earned $10 on Thursday,$20 on Friday,and $15 on Saturday selling necklaces.He sold each necklace for the same amount.What is the most he could have charged for each necklace?
Answer:
20 dollars.
Step-by-step explanation:
Look at the largest number.
Answer: pretty sure it is 5
Jim and bill each invest $15,000 into savings accounts that earn 3.5% interest. Jims account earns simple interests and bills account earns compound interest. After 25 years, who will earn more interest and how much more will he earn.
Answer:
Bill will earn more interest
He will earn $ 20,448.67 from his investment
Step-by-step explanation:
Firstly let us calculate Jim's earnings based on simple interest
A = P(1 + rt)
Calculation:
First, converting R percent to r
a decimal
r = R/100 = 3.5%/100 = 0.035 per year.
Solving our equation:
A = 15000(1 + (0.035 × 25)) = 28125
A = $28,125.00
The total amount accrued, principal plus interest, from simple interest on a principal of $15,000.00 at a rate of 3.5% per year for 25 years is $28,125.00 for Jim
Now let's us calculate bill's investment based on compound interest
Equation
A = P(1 + r)^t
A=15000(1+0.035)^25
A=15000(1.035)^25
A=15000*2.36324498427
A = $ 35,448.67
We see that Bill will earn
$ 20,448.67 from his investment
Vanessa throws a tennis ball in the air. The function h(t) = -15t2 + 45t + 10 represents the distance in feet, that the ball is from the ground at any time in seconds, t. What is the maximum height of the ball?
Answer:
43.75feet
Step-by-step explanation:
Given the height of the tennis ball expressed as;
h(t) = -15t^2 + 45t + 10
At maximum height, the velocity of the ball is zero
v = dh/dt
dh/dt = -30t + 45
Since dh/dt = 0, hence;
0 = -30t + 45
30t = 45
t = 45/30
t = 3/2
t = 1.5secs
Substitute t = 1.5 into the expression given
h(1.5) = -15(1.5)^2 + 45(1.5) + 10
h(1.5) = -15(2.25)+67.5+10
h(1.5) = -33.75+77.5
h(1.5) = 43.75feet
Hence the maximum height of the ball is 43.75feet