Replace x in each equation and see which ones are true.
The answers are:
C. If 5x + 10 =20 then x =2
D. If 6x-12=48, then x=10
F. If 8x(x-4)=32, then x=8
Rosa is putting carpet in her rectangular bedroom. She made a scale drawing using the scale of 1 inch = 3 feet. In the drawing, the length is 5.5 inches and the width is 3.25 inches. If the carpet cost $2.58 per square foot, how much will it cost to carpet the bedroom?
Answer:
$59768.28
Step-by-step explanation:
5.5*36=198
3.25*36=117
117*198=23166
23166*2.58= thats a big room, let alone a lot of money
In 2015, the population of a town was 8914. The population is expected to grow at a rate of 1.36% each year. At this rate, what would be the population in 2040? Round to the nearest whole number. Enter your answer in the box.
Answer:
320904
Step-by-step explanation:
Simplify the following expression. 30 simplified form:
Answer:
1
Step-by-step explanation:
any number to the power 0 is 1
Answer:
1
Step-by-step explanation:
Helpppppppppppppppppppp
Answer:
Step-by-step explanation:
Maya will deposit $1,650 in an account that earns 5% simple interest every year. Her brother, James, will deposit $1,600 in an account that earns 8% interest compounded annually. The deposits will be made on the same day, and no additional money will be deposited or withdrawn from the accounts. Compare and contrast the two siblings' accounts after four year
Answer:
each year james gets 3% more interest than maya. over 4 years james gets 34% interest and maya gets 20%. over 4 years james gets 16% more than maya
Step-by-step explanation:
GIVING OUT BRAINLIETS!!
What is the value of x in the equation 0.7x – 1.4 = –3.5?
–7
–3
3
7
Answer:
-3
Step-by-step explanation:
0.7x-1.4=-3.5
Add 1.4 to both sides:
0.7x=-2.1
Divide 0.7 from both sides:
x=-3
(Please help, Multiple Choice) Find the value of X
Answer:
X=19
Step-by-step explanation:
7x-8=6x+11
x=19
Juan, Paco, Gus and Brad ran a race. Juan ran it in 15 minutes. Paco's time was 3 minutes faster than Juan's. Pedro's time was 1 more minute more than Paco's. Brad's time was 5 minutes slower than Pedro's. which f the boys won the race?
A. Juan
B. Paco
C. Gus
D. Brad
Which ratios are less than 8 to 10?
Answer:
3:5 and 50:100
that should be the answer
I'm not too sure on this one
The price of apples at three different stores in shown below.
Store R sells apples for $1.20 per pound
Store S sells 4 pounds of apples for $5.00
Store T sells 3 pounds of apples for $3.48
Which of these is a true statemen
Answer: None
Step-by-step explanation: You need more info to answer that question so I would just put that you don’t know much about the question.
What is the quotient when 10x^3-3x^2-7x+3 is divided by 2x-1?
Answer:
Step-by-step explanation:
STEP
1
:
Equation at the end of step 1
STEP
2
:
Equation at the end of step
2
:
STEP
3
:
10x3 - 3x2 - 7x + 3
Simplify ———————————————————
2x - 1
Checking for a perfect cube :
3.1 10x3 - 3x2 - 7x + 3 is not a perfect cube
Trying to factor by pulling out :
3.2 Factoring: 10x3 - 3x2 - 7x + 3
Thoughtfully split the expression at hand into groups, each group having two terms :
Group 1: -7x + 3
Group 2: 10x3 - 3x2
Pull out from each group separately :
Group 1: (-7x + 3) • (1) = (7x - 3) • (-1)
Group 2: (10x - 3) • (x2)
Bad news !! Factoring by pulling out fails :
The groups have no common factor and can not be added up to form a multiplication.
Polynomial Roots Calculator :
3.3 Find roots (zeroes) of : F(x) = 10x3 - 3x2 - 7x + 3
Polynomial Roots Calculator is a set of methods aimed at finding values of x for which F(x)=0
Rational Roots Test is one of the above mentioned tools. It would only find Rational Roots that is numbers x which can be expressed as the quotient of two integers
The Rational Root Theorem states that if a polynomial zeroes for a rational number P/Q then P is a factor of the Trailing Constant and Q is a factor of the Leading Coefficient
In this case, the Leading Coefficient is 10 and the Trailing Constant is 3.
The factor(s) are:
of the Leading Coefficient : 1,2 ,5 ,10
of the Trailing Constant : 1 ,3
Let us test ....
P Q P/Q F(P/Q) Divisor
-1 1 -1.00 -3.00
-1 2 -0.50 4.50
-1 5 -0.20 4.20
-1 10 -0.10 3.66
-3 1 -3.00 -273.00
-3 2 -1.50 -27.00
-3 5 -0.60 3.96
-3 10 -0.30 4.56
1 1 1.00 3.00
1 2 0.50 0.00 2x - 1
1 5 0.20 1.56
1 10 0.10 2.28
3 1 3.00 225.00
3 2 1.50 19.50
3 5 0.60 -0.12
3 10 0.30 0.90
The Factor Theorem states that if P/Q is root of a polynomial then this polynomial can be divided by q*x-p Note that q and p originate from P/Q reduced to its lowest terms
In our case this means that
10x3 - 3x2 - 7x + 3
can be divided with 2x - 1
Polynomial Long Division :
3.4 Polynomial Long Division
Dividing : 10x3 - 3x2 - 7x + 3
("Dividend")
By : 2x - 1 ("Divisor")
dividend 10x3 - 3x2 - 7x + 3
- divisor * 5x2 10x3 - 5x2
remainder 2x2 - 7x + 3
- divisor * x1 2x2 - x
remainder - 6x + 3
- divisor * -3x0 - 6x + 3
remainder 0
Quotient : 5x2+x-3 Remainder: 0
Trying to factor by splitting the middle term
3.5 Factoring 5x2+x-3
The first term is, 5x2 its coefficient is 5 .
The middle term is, +x its coefficient is 1 .
The last term, "the constant", is -3
Step-1 : Multiply the coefficient of the first term by the constant 5 • -3 = -15
Step-2 : Find two factors of -15 whose sum equals the coefficient of the middle term, which is 1 .
-15 + 1 = -14
-5 + 3 = -2
-3 + 5 = 2
-1 + 15 = 14
Observation : No two such factors can be found !!
Conclusion : Trinomial can not be factored
Canceling Out :
3.6 Cancel out (2x-1) which appears on both sides of the fraction line.
Final result :
5x2 + x - 3
The quotient when 10x³-3x²-7x+3 divided by 2x-1 is -21/8.
To calculate the quotient of the equation 10x³-3x²-7x+3 when it is divided by 2x-1, we use the quotient theorem.
Remainder theorem
The quotient theorem states that if f(x) is divided by x-a, then the remainder is f(a).
From the question,
Given:
f(x) = 10x³-3x²-7x+3............. Equation 1diveded by 2x-1The quotient is f(1/2), we substitute the value of x as 1/2 into equation 1
f(1/2) = 10(1/2)³-3(1/2)²-7(1/2)+3f(1/2) = (10/8)-(3/4)-(7/2)+3f(1/2) = -21/8Hence, The quotient when 10x³-3x²-7x+3 divided by 2x-1 is -21/8.
Learn more about the quotient theorem here: https://brainly.com/question/13328536
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The graph of f(x)=-vx is shifted to the right five units.
What is the domain?
Answer:
All x-values larger than or equal to 5 ([tex]x\geq 5[/tex])
Step-by-step explanation:
Notice that the graph of
[tex]f(x)=-\sqrt{x}[/tex]
is defined for all real x-values larger than or equal to zero, since the square root is defined only for such values.
When we shift the graph to the right 5 units, the function becomes:
[tex]f(x)=-\sqrt{x-5}[/tex]
then the radicand x-5 must be larger than or equal to 0 in order to render real values. Then we have:
[tex]x-5\geq 0\\x\geq 5[/tex]
which means that now the Domain becomes the following set (in set builder notation):
[tex]Domain=\left \{ x\,|\,x\geq 5 \right \}[/tex]
It costs twelve dollars to get in to the fair. Tickets for rides cost extra and are d dollars each,
If Tyra buys 20 tickets, how much would it cost her for the fair?
$12 - 200
$120 + 20
$12 + 200
20d - $12
NEXT QUESTION
© ASK FOR HELP
How many significant digits should the product of 11,435 m and 19.35 m have
Answer:
2 significants choes the least significant digets which is 19.35
result is 221,267.25
Can anybody help me it’s due right now at 2:00pm please will mark the brainiest please
A desk is 2 meters long and 1 meter wide. The desk needs to be represented in a scale drawing of an office that uses a scale of 1 centimeter = 0.5 meter. What are the dimensions of the desk in the drawing?
Answer:
Thus, the dimensions of the desk in the drawing are 4 cm long and 2 cm wide.
Step-by-step explanation:
Scaling
The scale factor established to represent a desk 2 meters long and 1 meter wide is:
1 centimeter = 0.5 meter
We need to convert the real dimensions to the scaled dimensions. To complete the task, it's a good idea to multiply the real dimensions by the ratio:
[tex]\displaystyle \frac{1\ cm}{0.5\ m}[/tex]
to get the scaled dimensions.
The length of 2 meters is scaled to:
[tex]\displaystyle 2\ m\frac{1\ cm}{0.5\ m}=4\ cm[/tex]
And the width of 1 meter is scaled to:
\displaystyle 1\ m\frac{1\ cm}{0.5\ m}=2 cm
Thus, the dimensions of the desk in the drawing are 4 cm long and 2 cm wide.
Calculate the angles of an isosceles triangle that
has sides of length 9 cm, 9 cm and 14 cm.
Answer:
Step-by-step explanation:
How much water should be added to 1 gallon of pure antifreeze to obtain a solution that is 80% antifreeze?
Answer:
The amount of water to be added is ¹/₄ gallon
Step-by-step explanation:
Given;
amount of pure antifreeze at 100% = 1 gallon
let the amount of water to be added with 0% antifreeze = (x) gallon
then, the amount of mixture at 80% antifreeze = (x + 1) gallon
For conservation of mass, we will have the following equation;
(1 x 1) + (0)(x) = 0.8(x +1)
1 = 0.8x + 0.8
0.8x = 1 - 0.8
0.8x = 0.2
x = 0.2 / 0.8
x = ²/₈
x = ¹/₄ gallon
Therefore, the amount of water to be added is ¹/₄ gallon
A new sports stadium has 5,900 seats. Elena said that she could rename the
number of seats as 4 thousand and some hundreds. How many hundreds does
Elena need to write in the name 5,900?
Answer:
If your doing 4 thousand and some hundreds then the answer is 19 hundred, But if your doing just hundreds the answer is 59 hundreds.
Step-by-step explanation
5900/100 = 59
Riddle - You enter a room. 2 dogs, 4 horses 1 giraffe and a duck are lying on the bed. 3 chickens are flying over two chairs. How many legs are on the ground?
Answer:
Trick question, either 8 legs because of the two chairs or none.
Step-by-step explanation:
The dogs and everything aren't on the ground. I think the anwser is either 8 or none.
Answer:
The number of legs on the ground are 10.
Step-by-step explanation:
Given information:
2 dogs , 4 horses and 1 giraffe and a duck are laying on the bed.
3 chickens are flying over two chairs .
Now, in the riddle the specific type of leg is not mentioned but the information is given about the bed and chair.
So, one need to consider the legs of bed and chair too, also the person entering in the room is on the ground so the legs of the person will also be counted.
Hence, total number of legs on the ground will be:
legs of (1 bed + 2 chairs + 1 person)
Hence
Number of legs (N) = 4+8+2
N=10
Hence, the number of legs on the ground are 10.
For more information visit:
https://brainly.com/question/478260?referrer=searchResults
Please help its due at 11:05
Answer:
-2 or -3 or even -4
Any number from -9 to -1 would be greater than -10
Please help!! ASAP thanks
Suppose that there are 327 members of a professional organization, of which 164 are over the age of 50. What is the probability that a randomly selected member of the organization is over the age of 50?
Answer:
0.502
Step-by-step explanation:
There are 327 members of a professional organization, of which 164 are over the age of 50.
The probability that a randomly selected member of the organization is over the age of 50 is calculated as:
Probabilty = 164 members/327 members
= 0.501529052
Approximately = 0.502
Therefore, the probability of the randomly selected member is over the age of 50 is 0.502.
An 8-pack of batteries costs $9.44
What is the price in dollars, of one battery?
Answer:
1.18
Step-by-step explanation:
First we have established that 9.44 is the total, and we know that there are 8 batteries in each pack. This is a problem of division.
By first identifying key words like each and total, you can safely assume it will be a division problem.
First step: Dividing the total with the number of batteries in the singular pack gives you a valid answer
9.44÷8=1.18
Second step: To make sure you didn't miscalculate, you can use: 1.18×8, which is equal to the total.
y = 3x² – 12x-13
Find the axis of symmetry for the quadratic equation
Answer:
x=2
Step-by-step explanation:
To find the axis of the simmetry of parabola ( the curve of the quadratic function) we have to find the x of the top point of the parabola.
The x= -12/-(2*3)= 2
So the axis of the symmetry is the line x=2
Rachel runs 3.2 miles each weekday and 1.5 miles each day of the weekend. How many miles will she have run in 6 weeks?
Rachel will have ran 114 miles in six weeks.
There's five weekdays in a week: (3.2 x 5) = 16 miles
There's two days in a weekend: (1.5 x 2) = 3 miles
16 [weekday] + 3 [weekend] = 19 miles [7-day week]
(19 x 6) = 114 miles
Hope this helps, please mark brainliest. Have an amazing rest of your day and stay safe! xx
Ms. Drevis' garden has lots of apple trees. 120 apples fall on ground in 30 seconds. How many
apples fall in one second?
Answer:
the answer would be 4
Step-by-step explanation:
because 120 divided by 30 is 4
Answer:4 apples fall per second/ in one second
Step-by-step explanation:
4 x 30 = 120
120 / 30 = 4
If it takes 7.1 pounds of seed to plant one acre of grass, how many acres can be planted with 9.94 pounds of seed?
Answer:
70.574
Step-by-step explanation:
7.1 × 9.94= A
9.94
7.1
-------
70.574
A= 70.574
(when multiplying decimals do not line up the dot and solve it as if there was no decimals point. when you get your answer count the amount of digits on the right side of the number going to the left on your answer.
in this case there are three digits on the right side of the decimals you count three spaces to the left of your answer wich is 574. put the decimal point infront of the 5 and you get you answer. 70.574