1.)Solve the following equation by completing the square
2x-3x-28=0
2.) find the sum. (The photo goes with question 2)
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Related Questions
What is mzA? Enter your answer as only a number
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Answer:
A = 25
B = 65
Step-by-step explanation:
Remark
I hope you mean what is the size of <A? If not leave a note. If I am correct than A and C are complementary (equal 90o) since B is a right angle.
Solution
2x + 1 + 5x + 5= 90 Combine like terms
7x + 6 = 90 Subtract 6 from both sides
7x = 90-6
7x = 84 Divide by 7
x = 84/7
x = 12
==========================
Now that is not quite the answer.
A = 2x + 1
A = 2*12 + 1
A = 25
B = 5x + 5
B = 5*12 + 5
B = 60 + 5
B = 65
on the medicine bottle it says 2 grams for a 60 lb person. the child weighs 105 lbs. how much medicine should they get?
Please help fast!!
Answers
Answer:
3.5 Grams
Step-by-step
set 2grams/60lbs equal to xgrams/105
x representing the amount of medicine needed for a 105lb child
Then you divide 60 by 105.
60/105=1.75
Now you multiply 2 by 1.75.
2 x 1.75 = 3.5
3.5 is your answer because 105 is 1.75 times more lbs than 60lbs
meaning you would need 1.75 times the amount of 2grams
to determine the value of x, which is 3.5grams
Percy bought an encyclopedia pried at $13.85 shipping and handing cost an additional 20 percent of the price
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Answer:
Percy spent $2.77 for shipping and handling.
Step-by-step explanation:
2.77 is 20 percent of 13.85
Find whole numbers a,b,c so that
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Answer:
Step-by-step explanation:
I can't give answer you by step to step cause I can't make any symbols through my computer.
Find the area of a circle with a diameter of \color{green}{16}16start color green, 16, end color green.
Either enter an exact answer in terms of \piπpi or use 3.143.143, point, 14 for \piπpi and enter your answer as a decimal.
units^2
2
Answers
Answer:
64π
Step-by-step explanation:
no
Many families in California are using backyard structures for home offices, art studios, and hobby areas as well as for additional storage. Suppose that the mean price for a customized wooden, shingled backyard structure is $3,200. Assume that the standard deviation is $1,200. (a) What is the z-score for a backyard structure costing $2,300
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Answer:
-0.75
Step-by-step explanation:
To get the z score we have to use this formula
Z = X-mean/standard deviation
X = 2300
Mean = 3200
The standard deviation = 1200
When we plug these values into the z formula above, we have:
2300-3200/1200
= -900/1200
= -0.75
the z-score for a backyard structure costing $2,300 is therefore -0.75
does anyone know this?!
the answers are
a- 0.12
b- 0.32
c-0.20
d.0.08
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Answer:
a
Step-by-step explanation:
what is the distance from eric bus stop to school
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Answer:
what
Step-by-step explanation:
We need the Math things tho lol
Which criteria must be true to conclude that ABCD is a parallelogram?
AE⎯⎯⎯⎯⎯≅EC⎯⎯⎯⎯⎯ and DE⎯⎯⎯⎯⎯≅EB⎯⎯⎯⎯⎯
AE=12BC
AC⎯⎯⎯⎯⎯≅BD⎯⎯⎯⎯⎯
AE⎯⎯⎯⎯⎯≅BE⎯⎯⎯⎯⎯ and DE⎯⎯⎯⎯⎯≅CE⎯⎯⎯⎯⎯
Parallelogram A B C D with diagonals A C and B D intersecting at E.
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Answer:
AC⎯⎯⎯⎯⎯≅BD⎯⎯⎯⎯⎯
AC≅BD
-2(7-15)
What is the value of
?
4
O 4
0 -2
O 2
O 4
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A chocolate chip cookie recipe calls for 2 cups of chocolate chips for every 3 3/4
cups of flour. How much flour would you use if you only had 1 cup of chocolate
chips?
Answers
9514 1404 393
Answer:
1 7/8 cups flour
Step-by-step explanation:
Half the quantity of chocolate chips will call for half the quantity of flour:
(3 3/4 cups)/2 = (15/4 cups)/2 = 15/8 cups = 1 7/8 cups of flour
The mean undergraduate cost for tuition, fees, room, and board for four-year institutions was $26,489 for a recent academic year. Suppose that the standard deviation is $3204 and that 36 four-year institutions are randomly selected. Find the probability that the sample mean cost for these 36 schools is Less than $25,000
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Answer:
0.00265
Step-by-step explanation:
We solve using the z score formula
z = (x-μ)/σ/√n
where
x is the raw score = $25,000
μ is the population mean = $26,489
σ is the population standard deviation = $3204
n = random number of samples = 36
For x < 25,000
z = 25000 - 26489/3204/√36
z = 25000 - 26489/3204/6
z = -1489/534
z = -2.78839
Probability value from Z-Table:
P(x<25000) = 0.0026485
Approximately = 0.00265
The probability that the sample mean cost for these 36 schools is Less than $25,000 is 0.00265
please i need help:/
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Answer:
It is 37%.
The formula for calculating your credit utilization ratio is pretty straightforward. To figure it out for an individual card, divide your credit card balance by your available credit line.
What you you do is divide the credit card ratio for each one.
For the first card: $2,397 (total on card) divided by 16,000, (the limit) is 0.149, we round that to 0.15. (15%)
For the second card: $1,218 (total on card) divided by 5,500 (the limit) which is 0.221. We round that to 0.22. (22%)
The question asks for the OVERALL, and that means to add. 22+15=37.
If 10 percent of a number equals 30, find 40 percent of that number.
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To find the whole number given the fraction and the number by the fraction, you multiply the number by the reciprocal/inverse of the fraction.
30 * 100/10= 300
So the whole number is 300 and to find 40% just multiply
300 * 40/100 = 120
:D
A student takes 25 minutes to solve 10 math problems in class if the student solve similar problems at the same rate how many minutes will it take the student to solve 12 math problems
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Answer:
The answer would be 30 minutes
Step-by-step explanation:
Find how many ties 12 can go into 10. (Divide 12 divided by 10=1.2)
Multiply 25 times 1.2 (30)
Your answer would be 30 minutes
Hope I helped!! :)
Sorry if it's wrong! :(
Pls mark brainliest!!!
A serving size of oreo cookies is 3 cookies which is 20% of a box of cookies come ina a box
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Answer:
tell us the rest of the questionnnnnnn
Step-by-step explanation:
Substitute x=y+1 into the expression 3x -1 and determine the first step
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Answer: the solution becomes 3=y+1-1
Step-by-step explanation:
The first step is to combine like terms meaning you subtract 1-1. Then you are left with 3=y.
PLEASE HELP ASAP!!!!
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Hello! :)
Please help me solve this + explain your answer :)
I will indeed give you Brainlst <3
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Answer:
A
Step-by-step explanation:
The two triangles are congruent because if each triangle's angles add up 180 degrees, you can deduce that the triangles have atleast two congruent angles.
Triangle RST:
48 + 73 = 121
180 - 121 = 59
Angle R = 59
Angle T = 48
Angle S = 73
59 + 48 + 73 = 180
Triangle ABC:
73 + 59 = 132
180 - 132 = 48
Angle A = 59
Angle B = 73
Angle C = 48
59 + 48 + 73 = 180
Which of the following numbers
is a solution to this inequality?
14x > 36
3
2.
Answers
Answer:
[tex]x=\frac{18}{7}[/tex]
Step-by-step explanation:
[Image: 1 apple, 3 oranges for each of 5 steps on the slider]
Explore equivalent ratios by using the slider. Complete the sentences below.
For every 4 apples, there are
oranges
Answers
Answer:
1.5
Step-by-step explanation:
A rocket is launched from a tower. The height of the rocket, y in feet, is related to the time after launch, x in seconds, by the given equation. Using this equation, find the time that the rocket will hit the ground, to the nearest 100th of second.
y=-16x^2+116x+75
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Answer:
7.85
Step-by-step explanation:
the other guy is incorrect,
2h+y/9h^2-y^2 - 4h^2/3h+y what is the least common denominator in this expression
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Answer: It is 9
Step-by-step explanation:
angle
1. Classify the following triangles according to their (1) sides and (ii) angles,
(fig 1) A=8cm b=5cm c=8cm
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Answer:
Isosceles triangle
Step-by-step explanation:
The given sides of a triangle are 8 cm, 5 cm and 8 cm.
We need to say that the type of triangle.
The two sides of a triangle are same i.e. 8 cm and the other side is 5 cm.
Such type of triangle in which two sides are equal, the triangle is isosceles. Here, two sides are 8 cm and the third one is 5 cm. It means the triangle is an isosceles triangle.
What is the best estimate for 82% of 503?
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Alaina went to the pet store to buy fish for her new 14-gallon fish tank. Each large fish costs $8 and requires 2 gallons
of water. Each small fish costs $3 and requires 0.5 gallon of water. She has $70 to spend on fish at the pet store. Circle
the combination of large and small fish can Alaina purchase for her fish tank?
Answers
Answer:
Small fish= 7
Big fish= 21/4 (so she'll get 5 big fish)
Step-by-step explanation:
With the problem, there are two equations, one for the cost, and one for the amount of water. For the first equation, Alaina can spend 70 dollars and the fish cost 8 and 3 dollars so the equation is 70=8b+4s (s for small and b for big). Then for the second equation there are 14 available gallons and the fish require 2 and .5 gallons so 14=2b+0.5s. Then you just solve the system of equations.
by what number must row 2 in the matrix??
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Answer:
Look at the picture
Step-by-step explanation:
i took the test
The row 2 in the matrix must be multiplied by 0.5
Matrix MultiplicationAccording to the question;
The row 2 contains elements; 2 0 -2Hence, let the required number to multiply row 2 be; x so that;
2 × X = 10 × X = 0-2 × x = -1From all the equations above; it follows that;
x = 1/2 = -1/-2Hence, the required number is; 1/2 = 0.5
Read more on matrix multiplication;
https://brainly.com/question/1821869
The discount price of a hat is $24 whats the regular price if the discount is 20%
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Answer:
30
Step-by-step explanation:
discounting by 20% is the same as marking to 80% of the original cost. 80% = .8
set up equation and solve
.8x=24
x=30
At the bowling alley, there are 25 people bowling. There is a 60% increase in bowlers the next night. How many people are bowling on the second night?
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Answer:
There would be 40 people bowling on the second night.
Step-by-step explanation:
25 x .60 = 15
60% of 25 is 15.
25 + 15 = 40
Answer:
40
Step-by-step explanation:
What is x?
25.12 = 27.10
PLEASE HELP MEEEE
Answers
Answer:
where's the x in the equation?
Answer:
25/12 Therefore, this equation is true: 25/12 = 25/12 If the numerator is greater than or equal to the denominator of a fraction, then it is called an improper fraction. In that case, you could convert it into a whole number or mixed number fraction. 25/12 = 2 1/12. Simplify Fractions.