a. Y = x + 7
-5y + 3x = -13
systems of equations
Answers
Related Questions
Elise claims that 4 ^4= 16. Avery claims that 4^4 =256. who is correct? explain your reasoning.
Answers
Answer:
avery
Step-by-step explanation:
because you do 4x4x4x4 not just 4x4 idrk how else to explain it
A car wash detailed 273 cars in 7 hours. At what rate did the car wash detail cars in cars per hour?
Answers
Answer:
39 cars/hour
Step-by-step explanation:
We are trying to find the rate of cars/hour. So we need to divide the amount of cars by the amount of hours.
273/7 = 39
The wash detailed cars at a rate of 39 cars per hour.
-4 (y - 2) = 12
what would “y” be?
Answers
Answer:
y = -1
Step-by-step explanation:
When solving this equation use the distributive property and get...
-4 (y - 2) = 12
-4y + 8 = 12
-4y = 12 - 8
-4y = 4
y = -1
Greg and Carl work at neighborhood car wash facilities and are paid daily. Greg is paid $25 a day plus $7 for each car he washes. Carl earns the same amount per car washed, but his total earnings in a day are always $6 more than Greg's. Which equation expresses the total amount, t, that Carl earns, as a function of the cars he washes, c?
A)t=19+7c
B)t=25+7c
C)t=31+7c
D)t=25+13c
Answers
Answer:
Answer: It's easy, compare the same answers.
Step-by-step explanation:
A. 19+7= 16
B. 25+7= 32
C. 31+7= 38
D. 25+13= 38
-(5 – 9) - (-2)(2)
how do i solve this?
Answers
Answer:
8
Step-by-step explanation:
-(5 – 9) - (-2)(2)
-(-4) - (-2)(2)
4 - (-4)
4 + 4
8
Use PEMDAS
Answer: The answer is 8
Step-by-step explanation:
plz help, the picture is my question
Answers
Answer:
c and d
Step-by-step explanation:
alternate interior angles are angles on different sides, but they at interior (inside)
WILL GIVE BRAINLIEST PLEASE HELP
Ryan and Eduardo are saving up money for a vacation to Italy. They have calculated that the trip will cost at least $900. If they’ve already saved $270, how much more do they need to save in order to have enough for the trip? Write an inequality and solution set
Answers
Answer:
they need to save $630 in order to have enough for the trip
270 + 630 = $900
the sides lenghths of a triangle are 9, 12, and 18 is this a right triangle?
Answers
Answer:
By virtue of the Pythagorean Theorem, in a right triangle the sum of the squares of the smaller two sides equals the square of the largest side. Only 9, 12, and 15 fit this rule.
Solve for X
PLEASE HELP!!
Answers
Answer: 3
Step-by-step explanation:
9x - 1 = 41 - 5x, 9x + 5x = 41 + 1, 14x = 42, x= 42/14, x= 3
simplify (4u)^2
write your answer without parenthesis
Answers
= 4u*4u
= 16 u^2
A student must have an average (the mean) on five tests that is greater than or equal to 80% but less than 90% to receive a final grade of B. Devon's grades on the first four tests were 77%, 63%, 90%, and 78%. What range of grades on the fifth test would give him a B in the course? (Assume that 100% is the highest grade possible.)
Answers
Answer:
92%-100% for B
Step-by-step explanation:
Answer: 92%-100% for B
Step-by-step explanation:
A farmer wants to fence a piece of his land. Two sides of the triangular field have lengths of 120 feet and 325 feet. The measure of the angle between those sides is 70 degrees. How much fencing will a farmer need?
Answers
Explanation: We need to find the area of the field using the side angle side method, which uses the equation (ab*sin C)/2.
Thus, we have (120*325*sin 70)/2=18324 square feet.
Farmer need 750.5 feet fencing for his triangular field.
What is triangle?"Triangle is two dimensional geometrical shape with three sides and three vertices. Sum of all the angles of a triangle is equals to 180°.
Formula used
Cosine rule
As per the diagram,
cosθ = (b² +c² -a²) / 2bc
cos 70° = 0.3420
According to the question,
Let AB = c , AC = b are given sides of measure 120 feet and 325 feet respectively.
and BC = a
Angle between given sides be θ = 70°
Substitute the value in the formula we get,
cos70° = [ (325)² +(120)² - a²] / 2(120)(325)
⇒ 0.3420 = [ 120025 - a²] / 78000
⇒ 120025 -a² = 26676
⇒ a² = 93349
⇒ a = 305.5
Total fencing required for triangular field = AB + BC +CA
= 120 + 325 + 305.5
= 750.5 feet
Hence, farmer need 750.5 feet fencing for his triangular field.
Learn more about triangle here
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Plz help!!! 10 pts..
Answers
Answer:
63 boquets were sold in the afternoon.
Step-by-step explanation:
Divide 90 by 10 to get 9. Then multiply 9 by 3.
Answer:
23.1 pounds.
Step-by-step explanation:
Multiply 140 by 0.165.
PLEASE HELPPPP!!! MEEE! WILL GIVE BRAINIEST!!!
y =
x +
Answers
Answer:
[tex]y = 7x [/tex]
Step-by-step explanation:
To find the slope, which is
[tex] \frac{rise}{run} [/tex]
find how high up the y value goes before it intersects the x line at a specific point. It seems that they intersect at (70,10) which would be 70/10 or 7/1. 7/1 is just 7 so the slope of it is just that, 7. As for finding B, look at where the line starts, of it's above or below 0, then you would add or subtract whatever number it starts at (subtract for negative, add for positive). In this case it seems that the intercept is right at 0 so you would neither add or subtract anything. :)
π/4 equals how many degrees?
270
90
45
360
Answers
Answer:
your answer would be 45 :)
Step-by-step explanation:
i’m stuck with these questions
Answers
Answer:
Step-by-step explanation:
3) using the property of opposite angles we can work out that HFJ=138
Its that simple. if two lines intersect, the angles on either side are the same
4)I don't know how to find segments of circles...
Step-by-step explanation:
option A 138 °option D 320°option 300°plz mark my answer as brainlist plzzzz.
hope this will be helpful to you
Number 2 is the question
Answers
Answer:
C:2 gallons per minute
Step-by-step explanation:
Answer:
The answer is two gallons per minute.
Step-by-step explanation:
The gallons are always double the minutes. This means that there are 2 gallons per minute.
help please:(.....................
Answers
area of triangle is (base X height)/2
so it would be (14 X 5)/2
which is 70/2
which is 35
Answer:780
Step-by-step explanation:
Base times height times width times 1/2 12x5x12 plus 5x2x6
Please help!!! I need help on question 3!!! You can have these points i just got for it. (57 points)
Answers
Answer:
140 in.³
Step-by-step explanation:
The volume is base x width x height. Split the shape into two parts: 1. 2x4x5 and 2. 5x5x4. 1 is 40 inches in volume. 2 is 100 inches in volume. Add 100 + 40 to get 140.
Hope it helps!
450 mistakes in 9 tests. How many mistakes per test?
Answers
Answer:
50
Step-by-step explanation:
all you have to do is Divide 9 ÷ 450 the answer is 50.
50 mistake per tests.
Answer:
50 mistakes per test. 450 mistakes divided by 9 tests =50
You invest $125,000 in an account that earns 4.75% annual
interest, compounded continuously.
a. What is the value of the account after 15 years?
Answers
Step-by-step explanation:
step 1. let's call the amount of money A, the initial amount A¡, the rate r, and the time t.
step 2. A = A¡e^(rt) (continuously compounding equation)
step 3. A = 125000e^((.0475)(15))
step 4. A = $254,885.32
The value of the account after 15 years will be $254885.
What is compound interest?
In theory, continuously compounded interest means that an account balance is constantly earning interest and reinvesting that interest so that it, too, earns interest.p explanation.
In finance and economics, interest is the payment of an amount above the repayment of the principal sum by a borrower or deposit-taking financial institution to a lender or depositor at a specific rate by a borrower or depositor.
Given that you invest $125,000 in an account that earns 4.75% annually for 15 years of the time.
The compound interest will be calculated as:-
[tex]P(t) = P_o\times e^{rt}\\P(t) = 1250000\times e^{0.0475\times 15}[/tex]
P(t) = $254885
Hence, the value of the account after 15 years will be $254885.
To know more about compound interest follow
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plz solve this (t+p)4
Answers
Answer:
4t+4p
Step-by-step explanation:
Use the distributive property to multiply t + p by 4
Answer:
4t + 4p
Kennedy and Amaya want to make a scale drawing of Central Park. They want to use the scale of 1in : 1ft. Can you change that scale to a scale WITHOUT UNITS?
Answers
Lilly records the age, in years, and the height, in inches, of the starting players on the girls’ middle school basketball team.
She records them as ordered pairs (age, height): (11, 62), (12, 64), (13, 65), (13, 67), and (14, 68).
Is this relation a function? Explain.
Answers
Answer:
Im not sure but i think its b or c
Step-by-step explanation:
I would probably mostly recommend b
will give brainliest
Answers
Answer:
40⁰
Step-by-step explanation:
Main principles:
1.Alternate angles equal
2.Vertically opposite angles are equal
If angle 2 is 40⁰, then using the second principle,angle 3 is also 40⁰
Then, using the first principle,(alternate angles/angles that form any variation of "z"), angle 6 is also 40⁰.
There are other ways to do this like using co-interior angles, straight angles and other methods, these are the easiest to understand
HEKP ASAP IM BEING TIMEDDDD!!!!!!
Answers
Answer:
subtract 2.4 from both sides, simplify to -3x=16.8, divide by -3, simplify to x=-5.6.
Step-by-step explanation:
-3x + 2.4 = 19.2
v -2.4 -2.4
v 0 16.8
-3x=16.8
-3 -3
x=-5.6
hope this helps,
Noellepls help me, brain list and a thanks
Answers
Answer:
11/8 or 1 3/8
Step-by-step explanation:
5+6=11
11 goes into 8 1 so you have
1 /8
then theres the remander 3 so you get
1 3/8
9 divided by four as a mixed number
Answers
Answer:
2 and 1/4
Step-by-step explanation:
Which equation represents the graphed line?
y
6
4
NO
O
2
4
6
A. y - 1 = -2(x - 3)
O
B. y - 1 = -2(x + 3)
C. y + 1 = -2(x - 3)
O D. y + 1 = -2(x + 3)
Answers
Answer:
D
Step-by-step explanation:
Write the equation of a line in slope-intercept form when the y-intercept is (0, -8) and the slope is -2/3.
Answers
Answer:
[tex]y = -\frac{2}{3}x - 8[/tex]
Step-by-step explanation: