Answer:
4+y
Step-by-step explanation:
4 · y
4 + y
4y
(4)(y)
All of these are multiplication except 4+y
Order each step and justification that is needed to solve the equation below. 2/3y+ 15=9
[ Answer ]
Y = -9
[ Explanation ]
Subtract 15 from both sides:
2/3y + 15 - 15 = 9 - 15
Simplify:
2/3y = -6
Multiply each side by 3:
3 * 2/3y = 3 (-6)
Simplify:
2y = -18
Divide both sides by 2:
2y / 2 = -18/2
y = -9
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Using the simplification, it is proven that the y = -9 from the equation 2/3y + 15 = 9.
What is a system of equations?A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.
Given that 2/3y + 15 = 9
Subtract 15 from both sides;
2/3y + 15 - 15 = 9 - 15
Now Simplify,
2/3y = -6
Multiply each side by 3,
3 (2/3y) = 3 (-6)
2y = -18
y = -9
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The function f(x) = –x2 − 2x + 15 is shown on the graph. What are the domain and range of the function? The domain is all real numbers. The range is {y|y < 16}. The domain is all real numbers. The range is {y|y ≤ 16}. The domain is {x|–5 < x < 3}. The range is {y|y < 16}. The domain is {x|–5 ≤ x ≤ 3}. The range is {y|y ≤ 16}. Mark this and return Save and Exit Next
Answer:
The domain is all real numbers. The range is {y|y ≤ 16}.
Step-by-step explanation:
The vertex of a parabola is given by
[tex](\frac{-b}{2a}, \frac{4ac-b^2}{4a})[/tex].
As a = -1, b = -2, c= 15 here, then the vertex is at (1,16).
As a is negative, it opens downward, so the range is {y|y ≤ 16}.
Meanwhile, all parabolic functions have a domain of [tex]\mathbb{R}[/tex].
60 can be expressed as the sum of 5 consecutive numbers as follows:
60 = 10 + 11 + 12 + 13 + 14
The sum of the greatest and the smallest of these 5 consecutive numbers is 24.
90 can also be expressed as the sum of 5 consecutive numbers. What is the sum of the greatest and the smallest number of these 5 consecutive numbers?
A 36 B 46
C 54 D 84
please someone answer
Answer:
Let 5 consecutive no's be x,x+1,x+2,x+3,x+4
90 = x+ x+1+x+2+ x+3+x+4
90 = 5x+10
18 = x+2
x= 16
so smallest is 16
greatest = 16+4 = 20
sum = 16 +20 = 36
Rectangle ABCD has vertices A(-3, 1), B(5, 7), C(9, 4), and D(1, -2). Calculate the
area of rectangle ABCD.
It's not a rectangle. Look at the picture.
It is a parallelogram.
The area of the red rectangle:
[tex]A_{\boxed{ \ }}=(4+8)(6+3)=(12)(9)=108[/tex]
The areas of the right triangles:
[tex]A_1=\dfrac{1}{2}(3)(4)=6\\\\A_2=\dfrac{1}{2}(6)(8)=24[/tex]
The area of a parallelogram:
[tex]A=A_{\boxed{ \ }}-(2A_1+2A_2)\\\\A=108-(2\cdot6+2\cdot24)=108-(12+48)=108-60=48[/tex]
Grace starts with 100 milligrams of a radioactive substance. The amount of the substance decreases by 1/4 each week for a number of weeks, w. She writes the expression 100(1/4)w to find the amount of radioactive substance remaining after w weeks.
Answer:
True
Step-by-step explanation:
Each week the amount of radio active material is 100*(1/4)^x which is correct.
So at the end of 4 weeks she will have
amount = 100*(1/4)^x
amount = 100*(1/4)^4
amount = 100 * (1/256)
amount = 0.390625 grams after 4 weeks.
Answer:
Step-by-step explanation:
There is the answer.
abcd is not drawn to scale. based on the diagonal measures given abcd
Answer:
DAB must equal 52 because same side interior angles are supplementary. Supplementary describes 2 angles whose measures add up to 180
Answer: May or may not be
Step-by-step explanation:
check the picture and trust me
Find the area of rectangle PLUM
If entering your answer as a decimal, round your final answer to the nearest hundredth.
PL= sqrt(4^2+12^2)=4sqrt(1+9)=4sqrt(10)
Using similarity gives that AM=4/3.
ML=40/3
[PLMU]=40/3 * 4 = 160/3 (53.33)
Or
PM= sqrt(4^2+16/9)=sqrt(160/9)=4sqrt(10)/3
4sqrt(10)*4sqrt(10)/3=160/3 or approximately 53.33
Use the equation and type the ordered-pairs. y = 2^x {(-1, ), (0, ), (1, ), (2, ), (3, ), (4, )}
Put the values of x to the equation y = 2ˣ:
[tex]x=-1\to y=2^{-1}=\dfrac{1}{2}\to\left(-1,\ \dfrac{1}{2}\right)\\\\x=0\to y=2^0=1\to(0,\ 1)\\\\x=1\to y=2^1=2\to(1,\ 2)\\\\x=2\to y=2^2=4\to(2,\ 4)\\\\x=3\to y=2^3=8\to(3,\ 8)\\\\x=4\to y=2^4=16\to (4,\ 16)[/tex]
Answer:
[tex]\left\{\left(-1,\ \dfrac{1}{2}\right);\ (0,\ 1);\ (1,\ 2);\ (2,\ 4);\ (3,\ 8);\ (4,\ 16)\right\}[/tex]
Write the equation of a line that is perpendicular to the given line and that passes through the given point.
Answer:
y=5x+17
Step-by-step explanation:
perpendicular slope is 5
y-7=5(x+2) convert this equation into slope intercept and that's your answer
3x + 5 equals 19 - 4x what does x equals to
Answer:
x = 2Step-by-step explanation:
3x + 5 = 19 - 4x subtract 5 from both sides
3x = 14 - 4x add 4x to both sides
7x = 14 divide both sides by 7
x = 2
Answer:
x=2
Step-by-step explanation:
3x + 5 = 19 - 4x
Add 4x to each side
3x + 5 +4x= 19 - 4x+4x
7x+5 = 19
Subtract 5 from each side
7x+5-5 =19-5
7x =14
Divide each side by 7
7x/7 = 14/7
x = 2
-x+2 > 3 whats the answer plz its urgent thanks
a fast food restaurant sold 35 burgers with cheese if the ratio of burger sold the cheese compared to without cheese with 7 : 3, how many burgers did they sell in total?
An airplane must clear a 60-foot pole at the end of a runway 500 yards long determine the angle of elevation at which the airplane must ascend to clear the pole.
Answer:
2.3 degrees.
Step-by-step explanation:
Please find the attachment.
We are told that an airplane must clear a 60-foot pole at the end of a runway 500 yards long.
Let us convert 500 yards to feet.
1 yard= 3 feet.
500 yards= 3*500 feet= 1500 feet.
We can see from our attachment pole and runway are in form of a right triangle. The pole is opposite to angle of elevation of plane and length of runway is adjacent.
Since tangent represents the relation between opposite and adjacent of right triangle, So we will use tangent to find angle of elevation that plane must ascend to clear the pole.
[tex]tan(\theta)=\frac{60}{1500}[/tex]
[tex]\theta=\tan^{-1}(\frac{60}{1500} )[/tex]
[tex]\theta=\tan^{-1}(0.04)[/tex]
[tex]\theta=2.290610042639[/tex]
Therefore, the airplane must ascend 2.3 degrees to clear the pole.
In ΔABC, m∠ACB = 90°, CD ⊥ AB and m∠ACD = 45°. Find AC, if CD = 6 sqrt 3
Final answer:
Since ΔACD is an isosceles right triangle, the two legs AC and CD are equal. Given CD = 6 √ 3, AC is also 6 √ 3 units.
Explanation:
In triangle ΔABC, we are given that m∠ACB = 90°, meaning that ΔACB is a right-angled triangle. We are also given that CD is perpendicular to AB and that m∠ACD = 45°. Since CD is perpendicular to AB at D, triangle ΔACD is also a right-angled triangle with a 45° angle, which makes it an isosceles right triangle. In an isosceles right triangle, the lengths of the legs are equal. Therefore, AC will be equal to CD which is given as 6 √ 3.
The length of AC in triangle ΔACB can be found using Pythagoras' theorem, AC = √(AB² + BC²). But here we need only the length of AC in the right-angled ΔACD where AC equals CD.
Hence, AC = 6 √ 3 units.
Write an explicit formula for the sequence given by the recursive definition a(1)=1 and a(n+1)=a(n)+7
Answer:
an = -6+n
or
an = 1 + 7(n-1)
Step-by-step explanation:
a(1)=1 and a(n+1)=a(n)+7
The explicit formula is
an = a1+ d (n-1)
we know a1 =1
Looking at a(n+1)=a(n)+7
We are adding 7 each time so the common difference is +7
an = 1 + 7(n-1)
We can simplify this
an = 1 + 7n -7
an = -6+n
You can use either formula
WILL GIVE BRAINLIEST! THIS IS 20PTS! Which mathematical property is demonstrated? If x = –3 and –3 = z, then x = z. A.) symmetric property of equality B.) transitive property of equality C.) closure property of multiplication D.) closure property of addition
Answer:
B.) transitive property of equality
Step-by-step explanation:
x = –3 and –3 = z, then x = z.
Symmetric property of equality: if a = b then b = a
Transitive property of equality: if a = b and b = c, then a = c
Closure property of multiplication: the set is closed under multiplication
Closure property of addition: the set is closed under addition
last year the attendance at the homecoming football game was 300.This year , 360 attended What was the percent increase from last year to this year ?
Answer:
20%
Step-by-step explanation:
Percent increase is difference/original
360-300) / 300
60/300 / 60/60 = 1/5 * 20/20 = 20/100
Percent is out of 100
I need helpppppp please
if y varies directly as x and y=8 when x=2, find y when x=6
Answer:
y = 8
Step-by-step explanation:
If y varies directly as x we can write y = kx where k is some constant.
Y = 8 when x = 2 so 8 = k*2
k = 8/2 = 4
so y = 4x
This is the equation of variation.
When x = 6, y = 4*6 = 24 (answer).
Answer:
y =24
Step-by-step explanation:
The equation for direct variation is
y =kx
If we know x and y we can solve for k
y=kx
8 =k*2
Divide each side by 2
8/2 = k2/2
4 =k
y =4x
We want to find y when x=6
y =4*6
y =24
A division of a ———ends?
The complete statement is a division of long form ends with zeroes as remainders
What is division and long division method? What is a expression? What is a mathematical equation?Division is the process of splitting a number or an amount into equal partsLong Division is a method for dividing large numbers, which breaks the division problem into multiple steps following a sequence.A mathematical expression is made up of terms (constants and variables) separated by mathematical operators. A mathematical equation is used to equate two expressions. A mathematical equation is used to equate two expressions. Equation modelling is the process of writing a mathematical verbal expression in the form of a mathematical expression for correct analysis, observations and results of the given problem.We have the following statement -
A division of _____ ends?
The complete statement is -
A division of long division form ends with zeroes as remainders
Therefore, the complete statement is a division of long form ends with zeroes as remainders.
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(03.02 LC)
Look at the figure below:
Triangle ABC with a segment joining vertex A to point D on side BC.
Which information is required to prove that angle ABD is congruent to angle ACD? (6 points)
Segment AC is congruent to segment AB.
Segment AD is congruent to segment AC.
Segment BD is congruent to segment AD.
Segment AB is congruent to segment BD.
Answer:
SEgment AC is congruent to segment AB
Step-by-step explanation:
given is a triangle ABC with a segment joining A to D on side BC.
To prove that ABD is congruent to ACD
Let us compare these two triangles.
AD = AD (reflexive) Thus one side is equal.
IF AB = AC, then by isosceles triangles property we have angle B = angle C
Thus we get two sides equal. But this is a necessary condition not sufficient.
Because to prove congruence we need one more condition either CD = BD or Angle CAD = angle DAB
Thus if either AD is angle bisector, or D is mid point besides AC = AB we get
the two triangles are congruent.
If the Greatest Common Factor of L and M is 6, write the expression for the Least Common Multiple of these numbers.
Answer:
[tex]\frac{(L x M)}{6}[/tex]
Step-by-step explanation:
The greatest common factor is the greatest number that will divide two values. We have two values L and M. Each has numbers which multiply together to give the number. The highest value or most in common they share is 6. This is the GCF.
The least common multiple is the smallest positive number which is a multiple of the two. This means both L and M divide into it evenly.
We know L x M is a multiple because L and M will be factors of it. But we don't know its the least.
As an example if L= 42 and M = 60, they have GCF 6. We can multiply them to find a multiple 42 x 60 = 2520 but we don't know this is the smallest or least multiple we can find. If we divide by the GCF, 2520/6=420. Interestingly, 42 x 10 =420 and 60 x 7 =420. This means 420 is the least common multiple.
We can multiply (L x M) and then divide by the GCF of L & M to find the least common multiple.
[tex]\frac{(L x M)}{6}[/tex]
Cw 7.1 7.2 homework help
Please help me, ASAP!
A candy mixture is made from 6 pounds of sugar sticks of $10 per pound and 14 pounds of jelly beans of $8 per pound. Find the price of the candy mixture per pound.
Answer: The price per pound is $18
X+2=x+4
A.The equation has no solution
B.The equation has one solution
C.The equation has infinitely many solutions
Answer:
A. The equation has no solution
251,589 divided by 252
Answer:
The answer would be 998.4
Step-by-step explanation:
251,589 divided by 252 = 998.36
round it to 998.4
which expression is equivalent to (7x^2-4)(5x+7)
Expand to get 35x^3+49x^2-20x-28
Answer:
3x(3x + 2)
Step-by-step explanation:
The velocity of a car increases from 2.0 m/s to 16.0 m/s in a time period of 3.5 s. What was the average acceleration?
The average acceleration of the car is 4 m/s²
The given parameters:
initial velocity of the car, u = 2 m/s
final velocity of the car, v = 16 m/s
time of motion of the car, t = 3.5 s
To find:
the average acceleration of the carThe average acceleration of the car is calculated as the change in velocity per change in time.
The formula for average acceleration is given below;
[tex]a = \frac{\Delta v}{\Delta t} = \frac{v- u}{t} = \frac{16 - 2}{3.5} = 4 \ m/s^2[/tex]
Thus, the average acceleration of the car is 4 m/s²
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All the members of a construction crew work at the same pace. Four of them working together are able to pour concrete foundations in 32 hours. How many hours would this job take if the number of workers
decreased 2 times
increased 2 times
increased 4 times
plz help plz WILL GIVE ALL POINTS
Answer:
Step-by-step explanation:
Please find attachment for step by step explanation.
5 pounds of chocolate cost $36.50. How much is each pound of Chocolate? (Please include Work)
Answer:
Each pound of chocolate costs $7.30
Step-by-step explanation:
if 5 pounds of chocolate costs $36.50 then you could simply divide the $36.50 by 5 to calculate the cost of 1 pound of chocolate.
So, 36.50 ÷ 5 = 7.30
Each pound of chocolate costs $7.30
To find the cost of each pound of chocolate, you divide the total cost by the total number of pounds. Given a total cost of $36.50 for 5 pounds of chocolate, the resulting calculation is $36.50 ÷ 5 = $7.30. Thus, each pound costs $7.30.
Explanation:If you have 5 pounds of chocolate that cost $36.50 in total, and you need to find the cost of each pound of chocolate, you can determine this by dividing the total cost by the number of pounds. This is similar to how in our reference material, to compute the cost of each piece of fruit, you divided the total expense by the quantity of fruit.
In this case, you need to divide the total cost, which is $36.50, by the quantity, which is 5 pounds. So the calculation is $36.50 ÷ 5 = $7.30. Therefore, each pound of chocolate costs $7.30.
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