Answer:
y=3
Step-by-step explanation:
12+3y=21
-12 -21 subtract 12 from both sides
------------------
3y=9
divide 3 from y and 9, so you can get y by itself
3y/3= y 9/3= 3
so y is equal to 3
A scientist has a 10 pound alloy
Answer:
good for him
Step-by-step explanation:
Brainliest Plzzz!!!
Answer:
Is this free points? well thx! if u actually need help let me know
Step-by-step explanation:
Brainliest please
HELP ASAP
Help me figure this out I need to do it fast
Answer: (1,4) (2,8) (3,12)
Step-by-step explanation:
The graph of which of the following equations contains the point (-3,0)?
A
x+y=3
B.
-x - y=-3
C. x-y=3
D. x+y=-3
Answer:
you need help kd
Step-by-step explanation:
Can you Please help me. With this
brainliest will be givenChristine has a summer job cutting grass.
She earns $400 every 2 weeks. How much
will she earn over the summer holidays,
which are 12 weeks long?
Answer:
$2400 in 12 weeks is your answer
An amusement park has two roller coasters. One is 628 feet long, and the other is 485 feet long if you ride both roller coasters, about how many feet will you travel in all
Answer:
1113
Step-by-step explanation:
628ft+485ft=1113ft
A copy machine can print 480 copies every 4 minutes. A teacher printed 720 copies. How long did it take to print?
Answer:
10 min.
Step-by-step explanation:
Answer:
6 minutes
Step-by-step explanation:
Verbal contracts are generally discouraged because
a. there are usually no witnesses to a verbal contract
b. without a physical signature, they can be very difficult to enforce
C.unlike in a written contract, people can easily lie in a verbal contract
d. verbal contracts usually lack the detail necessary to produce a formal contract
Answer:
B: Without a physical signature, they can be very difficult to enforce
Step-by-step explanation:
Edge 12/7/2020
Generally, verbal contracts are often discouraged because: B. it is difficult to enforce without a physical signature.
What is a Verbal Contract?verbal contract, which can also be referred to as a parol contact, is a contract that is expressed by just words of promise or historically, and can be recognized by the courts.
However, unlike written contracts that a signature must be appended to, verbal contract are generally discouraged because: B. it is difficult to enforce without a physical signature.
Learn more about verbal contract on:
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Luis, Carlo, and Ken bought movie
tickets. Each ticket cost the same
amount. The 3 tickets cost $21. How
much did Carlo pay for his ticket?
Use a model to justify your answer.
12x-15?simplify or expand the expression
Answer:
3 (4x - 5) You would expand the expression, by factoring 3 out of each of the numbers.
Ned took a test with 25 questions. He lost 4 points for each of the 6 questions he got wrong and earned an additional 10 points for answering a bonus question correctly. How many points did Ned receive or lose overall?
Answer:
Ned lost 14 points.
Step-by-step explanation:
How many points lost: 24 (6*4)
How many points added: 10
He lost 24 points, but gained back 10. So, Ned really only lost 14 points overall.
A. Similar - AA
B. Similar - SSS
C. Similar - SAS
D. Cannot be determined
Wanda's homework was to find 73% of $400
A tape diagram. 0 dollars is 0 percent. Question mark dollars is 73 percent. 400 dollars is 100 percent. (7.3) (400) = 2,920. 73 percent of 400 dollars is 2,920 dollars.
What error did Wanda make?
O None. Wanda’s work is correct.
O Wanda converted the percent to a decimal incorrectly. It should be 0.073.
O Wanda converted the percent to a decimal incorrectly. It should be 0.73.
O Wanda has the wrong label. It should be hours, not dollars.
btw im asking these questions for people who doesnt have these questions
Answer: C because she went back to im just trying to help the team out
Answer:
(C) wanda converted the percent to a decimal incorrectly. it should be 0.73.
I answer (C) and it was correct.
Step-by-step explanation:
Give the other person brainliest ↑↑
hope it helps
Darius filled up his gas tank with 24 gallons of gas. For each mile that he drives, he uses 0.06 gallons of gas. How may gallons of gas are left in the tank after driving 240 miles?
Answer:
9.6 gallonsStep-by-step explanation:
Step one:
Given that the capacity of the gas tank is 24 gallons.
we know that 1 mile will consume 0.06 gallons
therefore x miles will consume 0.06x gallons.
the consumption for any distance is given as
0.06x gallons.
Step two:
if x=240 miles
then the gallons consume will be
0.06(240)=14.4 gallons
Step three:
the remaining gallons of gas in the tank will be
24-14.4=9.6 gallons
The reamining gallons will be 9.6 gallons
Ben drank 2/5.of a pitcher lemonade.Tonya drank 1/4 of the Lemonade.what is the fraction of the lemonade did they drink together?step step explanation who work with plz
Answer: 13/20
Step-by-step explanation:
Find the lowest common denominator (20)
Multiply the numerators by the other denominators
(2 * 4)
--------
20
&
(1 * 5)
--------
20
8/20 + 5/20 = 13/20
3,397 is 13.7 percent of what number
3397% of 13.7 = 465.389
Jose scored 80% on Part A of a math test and 92% on part B of the math test. His total mark on the test was 63. The total possible marks for the test was 75. Which system of equations represents this situation?
a (0.80A + 0.92B = 63 A + B = 75
ь (80A + 92B = 63 A + B = 75
с 0.80A + 0.92B = 75 A+B=63
d (80A + 92B = 75 A+B=63
Answer:
A
Step-by-step explanation:
] Find the vector form of the general solution to the given linear system Ax = b. Then use that result to find the vector form of the general solution to Ax = 0.
This question is incomplete, the complete question is;
Find the vector form of the general solution to the given linear system Ax = b; Then use that result to find the vector form of the general solution to Ax = 0.
x1 + x2 + 2x3 = 5
x1 + x3 = -2
2x1 + x2 + 3x3 = 3
Answer:
the vector form of the general solution to the given linear system Ax = b
x1 -2 -1
x2 = 7 +s -1
x3 0 1
find the vector form of the general solution to Ax = 0.
x1 -1
x2 = s -1
x3 1
Step-by-step explanation:
Given that;
x1 + x2 + 2x3 = 5
x1 + x3 = -2
2x1 + x2 + 3x3 = 3
Augmented matrix is expressed as;
1 1 2 5
1 0 3 -2
2 1 3 3
R2 ← R2 - R1
1 1 2 5
0 -1 -1 -7
2 1 3 3
R3 ← R3 - 2R1
1 1 2 5
0 -1 -1 -7
0 -1 -1 -7
R3 ← R3 - R2
1 1 2 5
0 -1 -1 -7
0 0 0 0
R1 ← R1 + R2
1 0 1 -2
0 -1 -1 -7
0 0 0 0
R2 ← - R2
1 0 1 -2
0 1 1 7
0 0 0 0
SO from the above reduced matrix, we get
x1 = -2 - x3
x2 = 7 - x3
x3 = x3
now we introduce parameter "s" for free variable x3
x1 = -2 - s
x2 = 7 - s
x3 = s
x1 -2 -1
x2 = 7 +s -1
x3 0 1
General solution of Ax = 0 will be
x1 -1
x2 = s -1
x3 1
Simplify the expression!
3/4(z+2/5)+2z =?
thank you for your help btw!!
The solution of the expression is (55z + 6 ) / 20.
What is an expression?Expression in maths is defined as the relation of numbers variables and functions by using mathematical signs like addition, subtraction, multiplication and division.
Given that the expression is 3/4(z+2/5)+2z. The expression will be solved as below,
E = 3/4(z+2/5)+2z
E = 3/4( z + 2 / 5 ) + 2z
E = 3/4 ( 5z + 2) / 5 + 2z
E = ( 15z + 6 + 40z ) /20
E = (55z + 6 ) / 20
Therefore, the solution of the expression is (55z + 6 ) / 20.
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The measure of an angle in standard position is given. Find two positive angles and two negative angles that are coterminal with the given angle. (Enter your answers as a comma-separated list.)
Answer:
The answer is below
Step-by-step explanation:
Let us assume the angle is -π/4.
Coterminal angles are angles that have the same initial side and terminal side. They are angles in standard position (angles with the initial side on the positive x -axis) that have a common terminal side.
Positive coterminal angles are gotten by adding 360° if the angle is in degrees or 2π for angles in radian while negative coterminal angles are gotten by subtracting 360° if the angle is in degrees or 2π for angles in radian.
Positive coterminal angle = -π/4 + 2π = 7π/4, 7π/4 + 2π = 15π/4
Positive coterminal angle = 7π/4, 15π/4
Negative coterminal angle = -π/4 - 2π = -9π/4, -9π/4 - 2π = -17π/4
Negative coterminal angle = -9π/4, -17π/4
Are y = -5x + 2 and y = 5x – 3 parallel, perpendicular or neither?
A.Parallel
B.Perpendicular
C.Neither
Answer:
parallel is the answer
A total of 910 tickets were sold for 5 dance
performances. What was the average number
of tickets sold for each performance?
Answer:
182
Step-by-step explanation:
910/5=182
What is the slope of the following equation?
Answer:
-5
Step-by-step explanation:
the slope is the one conected to the x
A softball pitcher has a 0.487 probability of throwing a strike for each pitch. If the softball pitcher throws 29 pitches, what is the probability that no more than 14 of them are strikes? Insert the correct symbol to represent this probability.
Answer:
P(x≤14) = 0.556
Step-by-step explanation:
Given:
Probability of throwing a strike (p) = 0.487
Total number of throw (n) = 29
Find:
Probability that no more than 14 of them are strikes P(x≤14)
Computation:
Mean(np) = (29)(0.487)
Mean(np) = 14.123
Standard deviation = √[mean( 1- p)]
Standard deviation = √[14.123( 1 - 0.487)]
Standard deviation = 2.6917 (Approx)
P(X < x) = P[(Z < (x - mean)]/[Standard deviation])
P(x≤14) = P(Z < (14.5 - 14.123) / 2.6917 )
P(x≤14) = 0.556
Determine if the ordered pair (−2,1) is a solution of 2x−y=−3.
yes or no
Answer:
no, it is not a solution
Step-by-step explanation:
2x−y=−3.
insert the x value and y value ---> x= -2 y= 1
2(-2) -(1)= -3
simplify
-4-1=-3
-5= -3
NO
Please help me quickly! 3.5.2 Practice for income tax
Answer:
$15,475
Step-by-step explanation:
Mr. and Mrs. Jones make a combined $92,400 in taxable income. Looking at the table, their income is over $67,900 but not over $137,050.
So, the tax is $9,350. But, it also includes 25% of the amount over $67,900.
So,
$92,400 - $67,900 = $24,500
0.25 × $24,500 = $6,125
$9,350 + $6,125 = $15,475
Hope that helps.
If the average gas price was 3.85 per gallon how much did you spend on gas and if you used 25 gallons of gas?
Answer:
Step-by-step explanation:
96.25 for 25 gallons
3.85 times 25 and that's your answer
Solve 2x + 6y = 11, solve for y
Answer:
y= 11-2x / 6
Step-by-step explanation:
Someone help please
4) u= 6a + 2b, for a
What is the solution for A?
Answer:
a = (u-2b)/6
Step-by-step explanation:
First get a by itself by subtracting 2b from both sides:
u-2b = 6a
Then isolate the variable by dividing both sides by six:
(u-2b)/6 =a