Answers
Answer:
1) x=10
2) x=6
3) x=13
Step-by-step explanation:
1) 15x-17+4x+7=180
19x-10=180
19x=190
x=10
2) 13x+5=16x-13
5+13=16x-13x
18=3x
x=6
3) 9x+7=11x-19
7+19=11x-9x
26=2x
x=13
Related Questions
Challenge: Laura buys a 10 pound bag of dog food. She feeds her dogs 22 ounces of food per day. Will the bag of dog food last a whole week? Explain.
Answers
Answer:
Yes, the dog food will last a whole week
Step-by-step explanation:
1 pound=16 ounces, so
10 pounds=10*16=160 ounces.
There are 7 days in a week, so if Laura feeds her dogs 22 ounces per day, she will need 7*22=154 ounces to last a whole week.
She buys 160 ounces, which is greater than 154, so yes.
Answer:
Yes, the food will last the whole week
Step-by-step explanation:
10 pounds is 160 ounces. If you multiply 22 by 7 you'll get 154.
plsss help me and also show your work if you can
Answers
Explanation: complimentary angles are two angles whose sum is 90°
To solve for x you would need this equation:
x + 65 = 90
A rectangle is 3m long and 2050 m wide find it perimeter
Answers
4106
Using technology we found the equation of the line to be y=-2x + 25. Using the given equation
predict the value of a car that is 3 and a half years old.
Answers
Answer:
A car that is 3 and a half years old would cost $18,000
Step-by-step explanation:
Using the given equation, [tex]y=-2x+25[/tex], we replace 'x' with '3.5' and solve for 'y'.
[tex]y=-2(3.5)+25[/tex]
[tex]y=-7+25[/tex]
[tex]y=18[/tex]
Dollar values on the graph are expressed in thousands. Thus, we multiply 18 by 1,000 to get $18,000
help help help help help help help help help help help help
Answers
Answer:
the answer is $1,560(d)
Select the correct answer. What is the solution to the equation? 3(x+9) ^3/4 = 24
Answers
Answer:
7
Step-by-step explanation:
How is the sum expressed in sigma notation?
1/64+1/16+1/4 + 1 + 4
Answers
9514 1404 393
Answer:
sum = ∑[n=1,5] 4^(n-4)
Step-by-step explanation:
First of all, you need to be able to describe the n-th term.
Here, we have ...
term #: 1, 2, 3, 4, 5
value: 4^-3, 4^-2, 4^-1, 4^0, 4^1
That is, the exponent of 4 is 4 less than the term number. So, the n-th term is 4^(n-4). The sum of the 5 terms shown is then ...
[tex]\displaystyle sum=\sum_{n=1}^5{4^{n-4}}[/tex]
Suppose you deposit $100 in a savings account where the interest earned is compounded continuously at a rate of 2%. How many years will it take the balance in the account to reach $10,000 (round your answer to
the nearest year)?
A. 231 years
B. 230 years
C. 234 years
D. 232 years
Answers
Answer:T = 230.259 years
So choice B
Step-by-step explanation:
T = r / 100
T : 2 /100 = 0.02 per year
Now let’s solve for t using this equation
In ( A/P) / r
In ( 10000/100) / 0.02
Put this on calculator u get 230.259 years and now to the nearest year
is 230 years.
Hope this help
What is the base of the exponential function?
0.625
0.16
0.86
1.16
answer - 0.86
Answers
Answer:
the answer might be 0.86 I don't know though
Thanks to a generous and eccentric donor, the school of business has 3 fax machines. The toner in each machine needs to be changed after about 5 hours of use. There is one unit secretary who is responsible for the fax machine maintenance. It takes him 15 minutes to replace the toner cartridge. What is the average number of fax machines in the system
Answers
Answer:
In the long run there are 0.02647 machines in the system queue.
Step-by-step explanation:
From the equation of the Finite Population Model of form M/M/1 with a finite source ,the average number of fax machines in the system to be maintained is given as :
[tex]L=\dfrac{\lambda^2}{\mu(\mu-\lambda)}[/tex]
Here
λ is the arrival rate which is the given as[tex]\lambda=\dfrac{Number\ of\ machines}{Time\ between\ Service}\\\lambda=\dfrac{3}{5\ hr}\\\lambda=0.6\ hr^{-1}[/tex]
μ is the service time which is 15 minutes or 4 per hourSo the equation becomes:
[tex]L=\dfrac{\lambda^2}{\mu(\mu-\lambda)}\\L=\dfrac{0.6^2}{4(4-0.6)}\\L=0.02647[/tex]
So in the long run there are 0.02647 machines in the system queue.
Bob's science teacher gave a quiz every Friday. Bob's quiz scores are shown in the box.
81 85 94 80 84 87 93 92
What is the median of Bob's quiz scores?
A 82
B 85
C 86
D 87
NO FILES PLZZ
Answers
Answer:
86
Step-by-step explanation:
80 81 84 85 87 92 93 94 8 numbers
Put numbers from smallest to largest then go through and count all the numbers. Cross off each number on either side until you get to the middle in this case you have two numbers average the. 85+ 87= 172/2 = 86
Pls answer this question!! (will give brainliest)
Answers
Answer:
Step-by-step explanation:
The answer is A simple
Please hurry and answer the questions for me
Answers
A triangle with side lengths of 8 cm, 14cm and 20 cm classify it as acute obtuse or right
Answers
Answer:
Obtuse
Step-by-step explanation:
The pythagorean theorem: a^2+b^2=c^2
Right triangles: a^2+b^2=c^2
Acute triangles: a^2+b^2>c^2
Obtuse triangles: a^2+b^2<c^2
8^2+14^2 ? 20^2
64+196 ? 400
260 < 400
The triangle is obtuse.
The Ambell Company uses batteries from two different manufacturers. Historically, 70% of the batteries are from manufacturer 1, and 90% of these batteries last for over 40 hours. Only 75% of the batteries from manufacturer 2 last for over 40 hours. A battery in a critical tool fails at 32 hours. What is the probability it was from manufacturer 1?
Answers
Answer:
0.625
Step-by-step explanation:
Given :
Ambell company uses or procures batteries from two manufacturers.
The life of a battery in critical tool is at = 32 hours
Ambell uses 70% of its batteries from manufacturer 1 and out of that 90% batteries lasts for about 40 hours.
Similarly, 75% of the batteries procured from the manufacturer 2 lasts for about 40 hours.
Therefore, the probability that a battery is form manufacturer 1 is :
[tex]$\frac{0.4 \times 0.25}{(0.6 \times0.1)+(0.4 \times 0.25)}$[/tex]
= 0.625
Examine this algebraic expression:
4x + y - 1/2 + 12
What are the variables?
What are the coefficients?
What are the constants?
Answers
Answer:
the variables are 4x and y the coefficients are 12 and the constant is 1/2
There are 55 blue marbles and 143 red marbles we want to place these
marbles in some boxes so that there is the the same in
each box and the same number of blue in each
many boxes do we need?
A. 8
B. 9
C. 10
Answers
Answer:
9 boxes
Step-by-step explanation:
The number of boxes that has the same number of marbles is 9.
Option B is the correct answer.
What is an expression?An expression is a way of writing a statement with more than two variables or numbers with operations such as addition, subtraction, multiplication, and division.
Example: 2 + 3x + 4y = 7 is an expression.
We have,
The total number of marbles.
= 55 + 143
= 198
The number of boxes where each box has the same number of marbles.
= 198 / 22
= 9
Where each box will have 22 marbles.
Thus,
The number of boxes is 9.
Learn more about expressions here:
https://brainly.com/question/3118662
#SPJ2
Simplify Please
-2a +a + 7 - 5
Answers
Answer:
-a+2
Step-by-step explanation:
-2a+a+7-5
=-a+2
Answer: -a + 2
Step-by-step explanation:
-2a+a+7-5
(Order of Operations! PEMDAS)
-2a+a= -a
-a+7-5=-a+2
-a+2
Check that 2b + b and 3b have the same value when b is:
A) 1 (Yes or No, Explain)
B) 3 (Yes or No, Explain)
Answers
Answer:
Option A is correct
Step-by-step explanation:
because,
2b+b and 3b
if b= 1
2(1)+1 and 3(1)
2+1 and 3
3 and 3
Hence Both have same value if b=1
I think I might be right but I don’t know
Answers
Answer: Equal to (=)
Step-by-step explanation: The answer is equal to because 0.67 can have infinite zeros behind it and still be equal to each other. This means that 0.67 could have one zero behind it and match the other. 0.67 is the same as 0.670. Hope this helps. Thanks
0.670 = 0.670
Help pleaseeeeeeeeeeee
Answers
Answer:
I hope its c
Step-by-step explanation:
please let me know if its wrong
Isla used her computer for 5 hours over the weekend. How many minutes did she spend on the computer?
Answers
Answer:
300 minutes
Step-by-step explanation:
5x60=300.
Answer: 300
Step-by-step explanation:
what expression is equivalent to 5 (x+10)
Answers
Answer:
An expression equivalent to 5 (x + 10) is 5x + 50.
Help me please! NO FILES! i will report :)
Answers
Answer:
report me I have brainly plus
The diagram shows the locations of Gabe’s house, a library, and a gymnasium. Each unit on the grid represents 1 kilometer.
Part C: Gabe’s friend Cindy lives halfway between Gabe’s house and the library. What is the coordinate location of Cindy’s house on the graph?
A.(1, 2)
B.(1, 1)
C.(2, 1)
D.(2, 2)
Answers
Answer:
Step-by-step explanation:4.4
I need help really bad please
Answers
The denominator of a fraction is 7 more than the numerator. If 1 is added to the numerator and 6 is added to the denominator, the value of the fraction will be ½. Find the numerator and the denominator.
Answers
Answer:
Let x=numerator,
y=denominator.
y=x+7 - - - - - (i)
(x+3)/(y+3) = 2/3
(Cross multiply)
3(x+3)=2(y+3)
3x+9=2y+6
(subtract 9 from both sides)
3x+9–9=2y+6–9
3x=2y+6–9
3x=2y-3 - - - - - - - (ii)
(substitute the value of equation (i) into (ii))
3x=2(x+7)-3
3x=2x+14–3
3x=2x+11
(subtract 2x from both sides)
3x-2x=2x+11–2x
x=11.
(substitute the value of x into equation (i))
y=7+11
y=18.
so numerator =11,
numerator =11,denominator = 18.
So original fraction is 11/18.
3/11th of original fraction is
= 11/18 x 3/11
= (11x3)/(18x11)
= 3/18
=1/6.
Answer = 1/6.
Answer:
Step-by-step explanation:
let numerator be x and denominerator be y
according to the question equation is
1+x /7+x+6=1/2( do cross multiplication)
7+x+6=2(1+x)
13+x=2+2x
13-2=2x-x
11=x
numerator =x+1=11+1=12
therefore numerator is 12
for denominerator
substitute the value of x in (7+x+6)
=7+11+6
24
Question
On Sunday, about how many times as great was the number of dinner customers as the number of lunch
customers?
Answers
...Answer:
Step-by-step explanation:
write the fraction 1/30 as a percentage
Answers
Answer:
[tex]3 \frac{1}{3} [/tex]
Step-by-step explanation:
1/30 × 100% = 3 1/3%
decide whether the following statement makes sense. I know more of the names of the common fallacies in arguments than my father, so I can recognize fallacies better than he can.
Answers
9514 1404 393
Answer:
no
Step-by-step explanation:
Knowing the name of something may have no correlation with any ability to recognize one when you see it.