Answers
Answer:
E and F
Step-by-step explanation:
✔️To eliminate the variable y, we can multiply the first equation, -x + 4y = 1 by 7 and the second equation, 8x - 7y = 42 by 4. This will leave us with the variable x alone to solve for.
✔️Alternatively, we may decide to eliminate the variable x first by multiplying the first equation, -x + 4y = 1 by 8. Both equations would be equivalent, thus when we can easily eliminate the variable x leaving us with variable y to solve for.
Related Questions
Morgan’s books sold 660 bookmarks last year, in comparison to 528 bookmarks this year. What is the percent of decrease in the number of bookmarks sold annually
Answers
Answer:
A 20% decrease I believe
Step-by-step explanation:
So, you subtract 660-528 which is 132. You then divide that by 660 and you get 0.2 or 20%
I just learnt this in math today so I hope it helps you and I hope it's correct :>
A pet store has 9 puppies, including 2 poodles, 2 terriers, and 5 retrievers. If Rebecka and Aaron, in that order, each select one puppy at random with replacement (they may both select the same one), find the probability that Rebecka selects a terrier and Aaron selects a retriever.
Answers
Answer:
5/162
Step-by-step explanation:
Probability of getting terrier = 2/18 = 1/9
Probability of getting retriever = 5/18
5/18 x 1/9 = 5/162
Hope that helps!
Carrie is 36 years old. She has worked in the same store for 12 years. Today, she had 63 customers. How old was Carrie when she began working in the store?
A. 24
B. 27
C. 48
D. 51
Answers
Answer:
A. 24
Step-by-step explanation:
36-12=24
This is the final answer for this question.
Hello, how are you?. I need help. Do you know where they sell teething toys for puppies in California?
Answers
Lin is paid 90$ for 5 hours of work?
At this rate, how much would Lin be paid for 5.5 hours of work?
Answers
Answer:
99 dollars
Step-by-step explanation:
90 divided by 5 equals 18 slice that in half you get 9.
90 + 9 =99
Answer:
the awnser for this question is 99 hope this helps
Which is less and why? -5 OR-6
Answers
Bella and Zoe went blueberry picking. Their blueberries weighed a total of 23.4 ounces. If Bella's
blueberries weighed 11.9 ounces, how many ounces (z) did Zoe pick? *
Answers
Answer:
Zoe picked 11.5 ounces
Step-by-step explanation:
23.4 - 11.9 = 11.5 ounces
find the vertical asympotes y= 3/ x+5
Answers
Answer:
the vertical asymptotes is x= -5
Given the function f(x) =2x+5 what would the output be with an input of 6?
Answers
out of 75/6 is 72%. (Write as a fraction in simplest form.)
Answers
Answer:22%
Step-by-step explanation:
The simplest form of the total of 75/6 would be 432 / 7500.
What is the percentage?A percentage is a minimum number or ratio that is measured by a fraction of 100. Suppose the value of which a thing is expressed in percentage is "a' Suppose the percent that considered thing is of "a" is b%
Then the percent; per 100 (since cent means 100), thus we will first divide the whole part in 100 parts and then we multiply it with b so that we collect b items per 100 items(that is exactly what b per cent means).
Given that out of 75/6 is 72%.
Therefore, it will be written as;
x of 75/6 = 72%.
We need to find the value of total x.
x of 75/6 = 72%.
x × 75/6 = 72%
x × 75/6 = 72/100
Cross multiplication;
x = 72/100 × 6/75
x = 432 / 7500
x = 0.0576
Hence, the simplest form of the total of 75/6 would be 432 / 7500.
Learn more about percentages;
brainly.com/question/24159063
#SPJ2
What is a sum of 1/2 and 3/10 in simplest from
Answers
Answer:
4/5
Step-by-step explanation:
1/2=5/10
5/10+3/10=8/10
simplified or 8/10 divided by 2 =4/5 and u cant simplify it anymore
Answer:
4/5
Step-by-step explanation:
convert 1/2 to 5/10 then and 3/10 then simplify and you get 4/5
HELP ASSAP I need help on this question
Answers
Answer:
X= 1, 2, 3, 4, 5
Y= 10, 20, 30, 40, 50
Step-by-step explanation:
hope this helps please press the pink "thanks" button
If -10x+3y = 9 and -4x+7y =1 are true equations,what would be the value of -6x-4y
Answers
Answer:
8
Step-by-step explanation:
Notice: we do not have to solve for x, and y. All we really have to do is to subtract the two equations.
(-10x + 3y) - (-4x + 7y) = 9 - 1.
Taking off the parentheses, we get:
-10x + 3y + 4x - 7y = 8.
Simplifying, we get:
-6x - 4y = 8.
So, the answer is 8.
How do I turn 42-5=37 into 42=37+5?
Answers
Answer:
You move the -5 to the other side.
Answer:
you move the -5 to the other side equation
PLEASE HELP THIS IS DUE TODAY
Answers
Answer:
do u want the answers to the whole book? I can give u a link...
Step-by-step explanation:
its 0.125
Enter the value for x that makes the equation true.
Answers
Answer:
Step-by-step explanation:
⅔(x-6) = ¾(x+16)
Multiply both sides by 12
8(x-6) = 9(x+16)
8x - 48 = 9x + 144
x = -192
Greta currently works 45 hours per week and earns a weekly salary of $729. She
will soon be starting a new job where her salary will be increased by 10% and her hours reduced by 10%.
How much more will she be earning per hour at her new job?
PLEASE SHOW YOUR WORK!!
Answers
Answer:
Greta will be earning 3.6/h more at her new job.
Step-by-step explanation:
To find the difference subract Greta‘s salary from her current job from Greta’s salary from her future job.
To find Greta’s salary (numerator) at her future job divide her current weekly salary ($729) by 45h then multiply that answer (16.2) by the increase in salary 10% or 1.1. You should end up with $17.82- this is your numerator. To find the denominator divide her current hours (45h) by 45 then multiply that answer (1) by 0.9 which is the 10% decrease in hours. Now you have a fraction ($17.82/0.9) then multiply that fraction by 1.1/1.1 to get the denominator to 1 hour so you can subtract the fractions. You should end up with $19.8/h.
Now subtract Greta’s current salary ($16.2/h)- you just take the numbers from the first part before you increase or decrease- from her future salary ($19.8/h), you will end up with 3.6/h.
I was challenged to write this in a single equation:
[((($729\45h)x1.1)/((45h\45)x0.9))x1.1/1.1]-[($729\45h)/(45h\45)]
=$3.6/h
/ means a fraction bar
\ means division
Also I am just a student so please tell me if you find any mistakes I could fix or any suggestions to make this a better explanation, and if you have any questions ask away.
Solve for n:
3(2−8n)=3n+6
Select one:
-15
5
-5
0
Answers
plzzzzzzzz tell fast
Answers
oh nawgs whats thay do to the bod :(
Answers
Answer:
lol
Step-by-step explanation:
.....................
A student wrote the following equation for the graph: y = -3/2 - 4. This is incorrect. What is the mistake? What is the correct equation?
Answers
Answer:
y=6
Step-by-step explanation:
y= -3/2(-4) : y=4
y=-2 3/4(-4)
y=3/2. 4
y= 3×4/2
y =12/2
12/2 =6
y =6
I need help due in 10 minutes ah!
Answers
Answer:
30
Step-by-step explanation:
If CUB is 78 and that’s the full angle just to 48 minus 78 and you get your answer.
Please help with this anyone
Answers
So,
(6x+10)+(2x+5)+(3x-11)=180
11x+4=180
11x = 176
x = 176/11 = 16
So the required angle R will be 6(16)+10 = 106 degrees
On a roulette wheel, half of the slots numbered 1 through 36 are red and half are black. Two slots numbered 0 and 00, are green. What are the odds against a ball landing in a red slot on any spin of the wheel? I'm also having a hard time on this please help me!!!! :(
Answers
Answer:
Two slots, numbered 0 and 00, are green.
What are the odds against a red slot's coming up on any spin of the wheel?
Step-by-step explanation:
Solve w=3/7(ay+m) for y
Answers
Answer:gd
Step-by-step explanation:
Vygfy
Answer:
y = (7w - 3m) / 3a
Step-by-step explanation:
w = 3/7ay + 3/7m
multiply each side by 7 to eliminate fractions
7w = 3ay + 3m
3ay = 7w - 3m
y = (7w - 3m) / 3a
What is the constant of proplity?
O 0.75
O 0.8
01.25
O 1.5
Answers
Crystal receives a monthly salary of $3,980. Find her earnings per year and earnings per week.
Answers
Answer:
per year: $47,760 per year
per week: $918.46 per week
Step-by-step explanation:
$3980 per month x 12 months = $47,760 per year
$47,760 per year divided by 52 weeks = $918.4615384615
Since we're talking money, let's round off our answer to the hundredths place ($918.46 per week)
Double check our answer (918.46 x 52 = 47,760) great!
Answer:
47760 per year
918.46154 per week
Step-by-step explanation:
$3,980 x 12= $47760
$47760/52= $918.46154
A publisher reports that 40% of their readers own a particular make of car. A marketing executive wants to test the claim that the percentage is actually different from the reported percentage. A random sample of 200 found that 31% of the readers owned a particular make of car. Determine the P-value of the test statistic. Round your answer to four decimal places.
Answers
Answer:
[tex]p-value = 0.9953[/tex]
Step-by-step explanation:
Given
[tex]P = 40\%[/tex] --- proportion of population
[tex]n = 200[/tex] -- samples
[tex]p = 31\%[/tex] -- proportion of samples
Required
Determine the p value
First, calculate the standard deviation ([tex]\sigma[/tex])
[tex]\sigma = \sqrt{\frac{P*(1 - P)}{n}}[/tex]
[tex]\sigma = \sqrt{\frac{40\%*(1 - 40\%)}{200}}[/tex]
[tex]\sigma = \sqrt{\frac{0.40*(1 - 0.40)}{200}}[/tex]
[tex]\sigma = \sqrt{\frac{0.40*0.60}{200}}[/tex]
[tex]\sigma = \sqrt{\frac{0.24}{200}}[/tex]
[tex]\sigma = \sqrt{0.0012}[/tex]
[tex]\sigma = 0.0346[/tex]
Next, we calculate the z score
[tex]z = \frac{p - P}{\sigma}[/tex]
[tex]z = \frac{40\% - 31\%}{0.0346}[/tex]
[tex]z = \frac{9\%}{0.0346}[/tex]
[tex]z = \frac{0.09}{0.0346}[/tex]
[tex]z = 2.6012[/tex]
[tex]z \approx 2.60[/tex]
From the z table, the p value of [tex]z = 2.60[/tex] is: 0.9953
Hence:
[tex]p-value = 0.9953[/tex]
The sum of the digits in a two-digit number is 16. The digit in the tens place is 2 more than the digit in the
ones place. The system of linear equations shown below represents this situation, where x is the digit in
the tens place and y is the digit in the ones place. Solve the system to find the two-digit number.
(x + y = 16
Ix-y=2
The two digit number is
Answers
Answer:
kapag napag aralan mo yan beh malalaman mo yung sagot kapit lang tiwala ka lang pag aralan mo tignan mo malalaman mo yung sagot jan wag kang magagalit dahil totoo yung sinbi ko cge keep safe and god bless..
Last week, a pharmacy sold a bottle of shampoo for $5.00. This week, the shampoo sells for $6.50. By what percent did price increase?
how would we find the original price if we know the sale price and the % of savings?
Answers
Answer:1.5 i think i dont know the second question tho