Answer:
40x=120
10r=130
Step-by-step explanation:
8(5x=15-5y)= 40x=120-40y
5(8y+26=2r)= 40y+130=10r
40x=120-40y
10r=130+40y
40x=120
10r=130
This is as far as I could get because the two numbers have two different variables, I couldn't subtract or add. It would be like subtracting apples from oranges... you can't
[tex]\begin{cases}5x=15-5y\\ 8y+26=2x\end{cases}\\\\\begin{cases}5x+5y=15\\ -2x+8y=-26\end{cases}\\\\\begin{cases}(5x+5y)\cdot2=15\cdot2\\ (-2x+8y)\cdot5=-26\cdot5\end{cases}[/tex]
+ [tex]\begin{cases}10x+10y=30\\ -10x+40y=-130\end{cases}[/tex] (adding first equation to second)
[tex]\begin{cases}10x+10y=30\\{}\qquad50y=-100\end{cases}\\\\\begin{cases}10x+10y=30\\{}\qquad y=-2\end{cases}\\\\\begin{cases}10x+10(-2)=30\\y=-2\end{cases}\\\\ \begin{cases}10x-20=30\\y=-2\end{cases}\\\\ \begin{cases}10x=50\\y=-2\end{cases}\\\\ \begin{cases}x=5\\y=-2\end{cases}[/tex]
HELP PLS WILL GIVE BRAINLISTE
Answer: D and J
Step-by-step explanation:
Subtract 17.56 from both sides and divide by 5 to get the answer of D. 2.52
3x + 6 = 9
subtract 6 from both sides
3x = 3
x = 1
-7/2 x 1/6 (make it a fraction) (simplified)
The answer would be -7/12
Step-by-step explanation:
What you would do is
a/b×c/d=ac/bd
this would be the formula
so what you would do is -7 (which is the numerator X the other numerator which equals -7 times 1= -7
then you would do 2 X6= which is 12 so the answer would be 7/12 because you can't simplify it anymore
Plz help me with this
Answer:
BALLZ
Step-by-step explanation:
T3ST1CALZ
Abigail is driving on a long road trip she currently has 13 gallons of gas in her car each hour that she drives her car is up 1 gallon of gas how much gas would be in the tank after driving for two hours how much gas will be left after T hours
Step-by-step explanation:
Well, if 1 gallon of gas = 1 hour then
2 hours would be 2 gallons so only 11 gallons of gas would be left in the tank and
13 hours would be 13 gallons, so 0 gallons of gas would be left in the tank
Help me plz I don't get it !!!!!!!!
Answer:
B. 3
Step-by-step explanation:
The constant of proportionality is 3 because every week, the tree grows 3 more inches at a constant rate. The increase amount doesn't change. It's constantly growing by 3 inches.
I hope this helps!
What is 3 1/3 + 4 4/6=?
Answer:
8
Add the fractions.
3 1/3 + 4 4/6 = 8.
The answer is 8.
Answer:
the answer is 8
Step-by-step explanation:
1/3 plus 4/6 is 1
1+3+4 is 8
Convert 17.8 miles to km
Answer:
28.64632
also if you can can you please help me with my question
Answer:
not gonna lie
Step-by-step explanation:
28.64632 km
K = 4a + 9ab solve for a
Answer:
[tex]a=\frac{K}{4+9b}[/tex]
Step-by-step explanation:
[tex]K=4a+9ab[/tex]
Switch sides:
[tex]4a+9ab=K[/tex]
Factor out a:
[tex]a\left(4+9b\right)=K[/tex]
Divide both sides by: [tex](4+9b)[/tex]
[tex]\frac{a\left(4+9b\right)}{4+9b}=\frac{K}{4+9b}[/tex]
[tex]a=\frac{K}{4+9b}[/tex]
A submarine was situated 800 feet below sea level. If it ascends 250 feet, what is its new position?**
Answer:
650
Step-by-step explanation:
800-250=650
It's like taking a negative number and adding a positive number to it
“An elephant charged 13.3 meters in 15 seconds.
At this rate, how far would the elephant move if it
could charge for 1 minute?”
Answer:
53.2 metersStep-by-step explanation:
If an elephant charged 13.3 meters in 15 seconds, to calculate the distance charged by the elephant in one minute, the following steps will be arried out.
15 seconds = 13.3 meters
1minute (60 seconds) = x
cross multiply
15 * x = 13.3 * 60
15x = 798
Divide both sides by 15
15x/15 = 798/15
x = 53.2metres
Hence the elephant will charge 53.2 meters for 1 minute
h(-1) means that x is...
Answer:
-1
Step-by-step explanation:
h(x) is another way to say y. the "x" inside h(x) IS the x value
Please help I need this badly, I would greatly appreciate it.
Answer:I would say 3 but I am not 100% sure
Step-by-step explanation:
!!20 POINTS!
What are the names of the rays in the figure?
Answer:
A. RS, ST, RT, TS , SR TR
Step-by-step explanation:
What is the value of the expression?
-16+ 12
-28
-4
4
28
Answer:
-4 is the corect answer because when your adding integers depending if your number is negative or positive your sum will either go right or left up or down
Step-by-step explanation:
as shown with the attached file
7) Line Segment PR is 5 ft. Find the length of Line Segment PQ and QR. (Hint: use the segment addition postulate.)
Answer:
PQ = 1 ft
QR = 4 ft
Step-by-step explanation:
From the picture attached,
Segment PR has been divided into two parts by a point Q.
Length of segment PR = 5 feet
Length of segment PQ = (15x - 2) ft
Length of segment QR = (5x + 3) ft
Since, PR = PQ + QR
5 = (15x - 2) + (5x + 3)
5 = 20x + 1
20x = 4
x = [tex]\frac{4}{20}[/tex]
x = 0.2
PQ = 15x - 2
= 15(0.2) - 2
= 3 - 2
= 1 ft
QR = 5x + 3
= 5(0.2) + 3
= 1 + 3
= 4 ft
Help me if someone can help
Answer:
1.11111111 is rational
1.567 is a rational number.
Step-by-step explanation:
1.11111111 is rational
1.567 is a rational number.
1.101101110 is irrational
so its choice 1 and 2
How could you write the numerical expression “4x + 1.25” in words?
the mean of 49 51 49 51 51 49 please help
Answer:
the mean is 50
Step-by-step explanation:
add up all the numbers which equals 300 then divide but the amount of numbers in this is 6 so that gives you 50
Answer:
50 is the mean
Step-by-step explanation:
When it ask for mean it ask you to add up all the numbers and divide by how many numbers their are. Their 6 numbers added together to make the total of 300.
49+51+49+51+51+49 = 300
300 / 6 = 50
Calculate the sum and enter it, as a fraction in lowest terms, using the
slash (/) for the fraction bar. 4/15 + 7/9
Answer:
47/45 or 1 and 2/45
Step-by-step explanation:
47/45 or 1 2/45
4/15 +7/9
× 3/3. × 5/5
12/45 + 35/45
47/45
At a track meet, the 3 members of a relay race ran a total distance of 3/8 of a mile. if each runner ran the same distance. how far did each person run?
Answer:
.125 of a mile
Step-by-step explanation:
If the total distance was 3/8 of a mile and there were 3 runners, then each runner ran ___________________.
Change the 3/8 to a decimal
3/8 = 0.375 of a mile
Since there were 3 runners divide the total distance by 3
0.375/3 = 0.125
Each runner ran 1/8 of a mile or 0.125 of a mile.
Canada has a population that is about 1 10 as large as the United States. If Canada's population is about 32 million, about how many people live in the United States? Explain the number of zeros in your the answer.
Answer:
320,000,000
Step-by-step explanation:
Name the subset(s) of real numbers to which each number belongs. Then order
the numbers from least to greatest.
9
10.-11.16
Answer:9,10,11,16
Step-by-step explanation:
9 is the least then 10 then 11 16 is the greatest
-5x - 2y = 13
-4x + y = 0
Solve by substation
Answer:
(x,y)=(-1,-4)
Step-by-step explanation:
-4x + y = 0
+4x +4x
y=4x
-5x - 2y = 13
+5x +5x
-2y = 5x+13
-2(4x) = 5x+13
-8x=5x+13
-5x -5x
-13x/-13=13/-13
x=-1
Thus:
y=4x
y=4(-1)
y=-4
Help lol as soon as possible
The Unit Rate is when both units in a rate are equal to each other (ie. 5 cats : 5 dogs)
True
False
Answer:
False
Step-by-step explanation:
Unit Rate Definitions Unit rate is used to compare quantities in which the second quantity is one. Common examples of unit rate would include, miles per hour earnings per hour cost per gallon.
How much of something per 1 unit of something else. Examples: • 100 cars pass by in 2 hours. The unit rate is 50 cars per hour.
Answer:
False
Step-by-step explanation:
it could be 5 cats : 6 dogs.
Unit rates can be unequal too.
2(10 − 6) 2 + 3(12 − 10)
Answer:
hope this helped you
please mark as the brainliest (ㆁωㆁ)
what is the reflection of (x, -y) across the y-axis.
Identify the range of the function shown in this graph
Answer:
[tex]0 \leqslant y \leqslant 5[/tex]
10. Model with mathematics. The flow rate on the Otter River Run can
vary up to 90 gallons per minute from the target flow rate of 640 gallons
per minute. Write and solve an absolute value equation to find the
extreme values of the flow rate on the Otter River Run.
Answer:
Extreme Flow Rates = 730 gallons per minute | 550 gallons per minute
where,
Maximum Flow Rate = 730 gallons per minute
Minimum Flow Rate = 550 gallons per minute
Step-by-step explanation:
The extreme values of a quantity are the minimum and the maximum acceptable values of that quantity. These values can be found by adding and subtracting the allowed variation from the target value, for maximum and minimum value, respectively. Therefore:
Extreme Flow Rates = Target Flow Rate ± Allowed Variation in Flow Rate
Extreme Flow Rates = 640 gallons per minute ± 90 gallons per minute
Extreme Flow Rates = 640 gallons per minute + 90 gallons per minute | 640 gallons per minute - 90 gallons per minute
Extreme Flow Rates = 730 gallons per minute | 550 gallons per minute
where,
Maximum Flow Rate = 730 gallons per minute
Minimum Flow Rate = 550 gallons per minute
During batting practice 12 balls were pitched to each player if 9 player came to practice how many balls were pitched?
If the player hit an average of 8 balls each, how many balls were hit?
Answer:
108 balls were pitched in total
Step-by-step explanation:
if 9 player came to practice and pitched 12 balls each. the equation would be 9*12=108