-8x-y=20 y=-4x
what is the substitution?
Answer:
For the first variable in one of the equations, then substitute the result into the other equation.
Point Form:
( 1 , 4 )
Equation Form:
x = 1 , y = 4lanation:
Jocelyn estimates that a piece of wood measures 5.5cm. If it actually measures 5.62 cm, what is the percent error of Jocelyn’s estimate?
Answer:
2.14% error
Step-by-step explanation:
Use the percent error formula:
| (observed - expected) / expected | x 100
Plug in the observed and expected values:
| (observed - expected) / expected | x 100
| (5.5 - 5.62) / 5.62 | x 100
Calculate:
= 2.14% error
So, the percent error of Jocelyn's estimate is 2.14%
Why doesn't -3^0 simplify to the same thing as 3^0?
Answer:
Step-by-step explanation:
-3^0 doesn't simplify to the same thing as 3^0 because the first 3 is negative and the second is positive.
hope this helped :))
Answer:
There is a negative
Step-by-step explanation:
Every positive number to the 0 power is 1
Every negative number to the 0 power is -1
solve and get brainliest
Answer:
25 dollars are saved
Step-by-step explanation:
you need to subtract 45 and 20
Answer: 25 $ is saved
Step-by-step explanation:
Ik the answer but can you explain how
Giving brainliest
Answer:
4/5 * 3/7
To multiply the fractions, multiply the numerators and denominators separately
4*3/5*7
multiply the numbers
12/5*7
multiply the numbers
12/35
hope that helps
Step-by-step explanation:
plssss can someone help me asap!!!!
this is algebra plz help me:
Kaya rented a limousine for prom. There was a one time charge of $100 dollars plus an hourly rate of $45. Her total cost for the night was $347.50. How many hours did Kaya rent the limo for?
Answer:
5.5 hr
Step-by-step explanation:
y- number of hours
equation is
100+45y= 347.50
45y= 247.50
y= 5.5 hours
if my answer helps please mark as brainliest
let f(X)=x^2+2 and g(X)=1-3x
Answer:
1. y = x2+2
2. g = (-3x+1)/x
Step-by-step explanation:
1. No explanation
2.
Let's solve for g.
gx=1−3x
Step 1: Divide both sides by x
gx /x = −(3x+1 )/x
g = (-3x+1)/x
Hope it helped!
What is the name of the circle that has radius ?
A
B
C
WILL GIVE BRAINLIEST!
The sum of three consecutive odd integers is fifty-one. Find the integers. (Enter your answers as a comma-separated list.)
Answer:
15, 17, 19
Step-by-step explanation:
let the first odd number be n then the next 2 are n + 2 and n + 4 , then
n + n + 2 + n + 4 = 51
3n + 6 = 51 ( subtract 6 from both sides )
3n = 45 ( divide both sides by 3 )
n = 15
Then
n + 2 = 17 and n + 4 = 19
The 3 consecutive odd numbers are 15, 17, 19
In one day, Ricardo hiked 2_ 2 3 times as far as Bernie and Chloe hiked before they ate lunch. How far did he hike?
Complete question :
Bernie and Chloe hiked the Tremont Trail to the end and back. Then they hiked the Wildflower trail to the end before stopping to eat lunch. Before Ricardo ate his lunch, he hiked 2 2/3 times as far as Bernie and Chloe. How far did he hike?
Required diagram is attached below
Answer:
25 miles
Step-by-step explanation:
Tremont Trail = 3 1/2 miles
Wildflower trail = 2 3/8 miles
Distance covered ; Tremont Trail and back : (3 1/2 * 2). = 7/2 * 2 = 14 /2 = 7 miles
Total distance covered by Bernie and Chloe before stopping for lunch /
(7 miles + 2 3/8 Miles) = 9 3/8 miles = 75/8 miles
Ricardo's distance = 2 2/3 * Bernie and Chloe's total distance
Ricardo's distance = 8/3 * 75/8 = 600 /24 = 25 miles
Please help me... thank youuuuuuuuuu.
Answer:
just plug in the x to find the y's, so option 1, 2 and 4 is an automatic no, therefore option 3 is the correct one :)
Step-by-step explanation:
Aubrey finished 2/9 of a project on Monday and 1/4 of the project of Tuesday. How much of the project has Aubrey completed?
Answer:
17/36
Step-by-step explanation:
We have to find a common denominator, so the first common denominator for 4 and 9 is 36. 9x4=36, so we multiply 2 by 4, which equals 8. 4x9-36, so we multiply the 1 by 9, and get 9. Then we add the numerators, 8 and 9, and get 17. So it's 17/36
gimme the answer for 10 points :)
Given:
The table of values.
v and x are in direct proportion.
To find:
The formula connecting v and x.
Solution:
(a)
v and x are in direct proportion.
[tex]v\propto x[/tex]
[tex]v=kx[/tex] ...(i)
Where, k is the constant of proportionality.
Putting v=13.6 and x=32.64, we get
[tex]13.6=k(32.64)[/tex]
[tex]\dfrac{13.6}{32.64}=k[/tex]
[tex]\dfrac{5}{12}=k[/tex]
Putting the value of k in (i), we get
[tex]v=\dfrac{5}{12}x[/tex]
Therefore, the required formula that connecting v and x is [tex]v=\dfrac{5}{12}x[/tex].
(b)
Putting v=n and x=8.16, we get
[tex]n=\dfrac{5}{12}(8.16)[/tex]
[tex]n=3.4[/tex]
Therefore, the value of n is 3.4.
what is the value of p(x)=6x^4+2x^3-x+2 at x=0
Answer:
2
Step-by-step explanation:
Plug in x=0
p(x)=6x^4+2x^3-x+2 at x=0
p(0)=6(0)^4+2(0)^3-(0)+2
p(0)=2
Answer:
2
Step-by-step explanation:
6×0^4+2×0^3-0+2
=0+0-0+2
=2
please help 20 points
Answer:
C
Step-by-step explanation:
plz i need brainliest
Answer and Step-by-step explanation:
The range of this graph is the third answer choice, or 0 < y < ∞.
This is because the range keeps going to try and reach 0, but never touching 0. And the range goes up infinitely.
#teamtrees #PAW (Plant And Water)
a TV reduced by 30% to £560. What was the original cost of the TV?
Answer:
£800
Step-by-step explanation:
when you recuce the price of something by 30%, it is 70% of the original (100% minus whatever percent reduction).
.7x=560 where x is the original price of the tv
560/.7=800
the original price of the tv is £800
Question 1 of 10
Which of these purchases is more likely to be paid for with a credit card?
A. Parking fee
B. Engine repair
C. Soda
D. Lotto ticket
SUBMIT
PLEASE HELP
B. Engine Repair is more likely to be paid for with a credit card. Option B is correct
It is to be determined Which of these purchases is more likely to be paid for with a credit card
Parking fee B. Engine repair C. Soda D. Lotto ticket
A credit card is a kind of credit service, delivered by banks that permit customers to borrow money within a pre-approved credit limit. It allows customers to make purchase transactions on goods and services.
Since option A, C and D can be omitted because, on parking fee, lotto ticket and soda spending through credit card can be possible but more likely because the spending on these items are very less and service provider do not intentionally accept the credit card
But engine repair is most likely to be paid from the credit card, because the liquidity in the business is very much high comparatively.
Thus, B. Engine Repair is more likely to be paid for with a credit card. Option B is correct
Learn more about credit card here:
https://brainly.com/question/4149583
#SPJ2
Sasha uses 6.1 pints of white paint and blue paint to paint her bedroom walls. 2/5 of this amount is white paint, and the rest is blue paint. How many pints of blue paint did she use to paint her bedroom walls?
Answer: 3.66 pints of blue paint.
Step-by-step explanation:
She used 2/5 of the total number of pints to paint white.
That number in pints is:
= 2/5 * 6.1
= 2.44 pints of white
The number of pints used to paint blue is therefore:
= 6.1 - 2.44
= 3.66 pints of blue paint.
Allie is trying to get her classmates to sign up to volunteer at the school carnival. The number of people that had
signed up by each day is indicated in the chart. Which line BEST fits the data in the chart?
A)
y = 4x - 30
B)
y = 4x + 30
o
y = 4x - 22
D)
y = 4x + 22
Answer:
The answer is D
Step-by-step explanation:
y=4x+22
y= 4(1)+22=26
y=4(2)+22=30
y=4(3)+22=34
y=4(4)+22=38
and so on
help pleaseee aha
find x pleaser
Answer:
125 degrees
Step-by-step explanation:
It is congruent to the angle that is labeled 125 degrees
Hope that helps!
Answer:
x = 125 degrees
Step-by-step explanation:
ok so the 2 lines are parallel and there is a line through them
i see the opposite angle to x equals 125 degrees
they are the same so...
x = 125 degrees
Please give me the correct answer!!!!
Answer:
There is no question, sorry
Step-by-step explanation:
During the fall, you charge $10 to go to a house
and rake the leaves and an additional $8 for
every hour that you rake the yard. If you earned
$42, how many hours did you spend raking the
leaves?
Answer:
4 hours
Step-by-step explanation:
you take 42-10 because you take the total you made minus the $10 you chare to go to the house
then you take 32 divided by 8 for each hour spent
= 4 hours spent raking
If he earned $42 he spent 4 hours raking the leaves
During a fall he charges $10 to go to a house and rake the leaves and an additional $8 for every hour that he rakes the yard.
Therefore, the equation can be represented as follows;
Linear equationy = 8x + 10where
x = number of hours
y = total charges
Therefore, If he earn $42 the number of hours worked can be calculated as follows:
42 = 8x + 108x = 42 - 10
8x = 32
x = 32 / 8
x = 4
Therefore, he works 4 hours to earn a total of $42
learn more on equation here:https://brainly.com/question/18592149
This recipe makes 16 portions of potato soup.
Richard follows the recipe but wants to make 4 portions.
Complete the amounts of each ingredient that he needs.
Recipe: Serves 16
96 mL oil
240 g onions
1.44 kg potatoes
1.6 L milk
Answer:
24 ml oil
60g onions
0.36kg potatoes
0.4L milk
Step-by-step explanation:
Oil=96/16 *4=24ml
Onions=240/16*4=60g
Potatoes=1.44/16*4=0.36kg
Milk=1.6/16*4=0.4L
help ME PLEASE HELP ME I HATE MATH I HATE IT YOU DONT NEED TO EXPLAIN IT I JUST NEED AN ANSWER
Answer:
674
Step-by-step explanation:
Answer:
woah woah woah woah calm down there buddy its 674 :)
Solve four tenths plus four ninths.
A. eight ninetieths
B. eight tenths
C. seventy six ninetieths
D. seventy six ninths
Answer:
D
Step-by-step explanation:
Answer:
The answer is C
Step-by-step explanation:
4/10 and 4/9 do not have a common denominator so you have to find a common denominator the common denominator is 90 so then you have to find the new numerator 4/10 new fraction is 36/90 and the new fraction of 9/10 is 40/90 then you add them which you get your answer 76/90.
can someone show me step by step on how to get the answer?
I'm confused with that too, have you researched your answer?
-2(x+5)=20 what is x
Answer:
x = -15
Step-by-step explanation:
Divide both sides by -2
x + 5 = -10
x = -15
Answer: x = -15
Step-by-step explanation:
-2(x + 5) = 20
-2x - 10 = 20
Add 10 to both sides
-2x = 30
Divide both sides by -2
x = -15
Jennifer gets a salary of $12000 while David gets $8400 more per month. What is the ratio of the salaries of Jennifer and David?
A.10 : 7
B.7 : 10
C.9 : 6
D.12 : 7
need help asap..really need ur help
Answer:
none of the above
Step-by-step explanation:
it is actually the fact that for every positive number on the number line there is a corresponding negative integer