Please help me. I will be giving 50 points, brainliest, a friend request, 5 stars and a heart. Please give an explanation as well.
Answer:
Step-by-step explanation:
Let older brother age be x and the age difference between the brothers be y
Younger brother's current age = x - y
When older brother's age was at x - y, younger brother's age was x - 2y = 2
When young brother's age will be at x, older brother's age will be x + y = 20
Subtracting the first equation from the second: 3y = 18
y = 6
x = 14
So the older brother is 14 and the younger brother is 8.
Sum of three son's ages now = 15 + 11 + 7 = 33
Daddy's age now = 45
Age difference = 12
Each year, daddy's age goes up by 1 while the sum of three son's ages goes up by 3.
Dividing the age difference by the difference in age gain, 12 / (3 -1) = 12 / 2
= 6
So in 6 years when daddy is 51 and the sum of sons at 21, 17 and 13 will be equal.
Answer:
Step-by-step explanation:
older bro age is x
younger bro age is y
age diff = x - y
it was (x-y) years ago when older bro was at age y
younger bro age then was y - (x - y) =2
2y - x = 2
younger bro will be at age x in (x-y) years
older bro age then will be x + (x-y) = 20
2x - y = 20
4x - 2y = 40
adding 2y - x = 2
3x = 42
x = 14
y = 2*14 - 20 = 8
daddy' age, 45 is 12 over the sum of sons (15, 11 and 7)
in 1 yr, dad age +1 n sum of sons +3 = difference of 2
so in 12/2 = 6 yrs they will be the same
HELP ME PLEASEEEEEEEEE
[tex](11 + x) \div 2 = 7 \\ 11 + x = 14 \\ x = 14 - 11 \\ x = 3[/tex]
[tex](4 + y) \div 2 = 5 \\ 4 + y = 10 \\ y = 10 - 4 \\ y = 6[/tex]
[tex](3,6) - option \: a[/tex]
Barry wants to make a drawling this is 1/2 the size of the original. If a tree in the original drawling is 11 inches tall and 7 inches wide, what will be the length and width of the tree in Barry's drawling?
Answer: 5.5 inches, 3.5 inches
Step-by-step explanation:
Given
Barry wants to make a drawing i.e. half the size of original
The length and width of the original drawing are 11 inches and 7 inches respectively.
So, the intended drawing is obtained by multiplying the original dimensions by [tex]\frac{1}{2}[/tex]
The length of barry's drawing is
[tex]\Rightarrow 11\times \frac{1}{2}\\\\\Rightarrow 5.5\ \text{inches}[/tex]
The breadth of barry's drawing
[tex]\Rightarrow 7\times \frac{1}{2}\\\\\Rightarrow 3.5\ \text{inches}[/tex]
[tex]5u + 11 = 56 \\ u = [/tex]
how resolve this ?
Answer:
u = 9
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDAS
Brackets Parenthesis Exponents Multiplication Division Addition Subtraction Left to RightEquality Properties
Multiplication Property of Equality Division Property of Equality Addition Property of Equality Subtraction Property of EqualityAlgebra I
Terms/CoefficientsStep-by-step explanation:
Step 1: Define
Identify
5u + 11 = 56
Step 2: Solve for u
[Subtraction Property of Equality] Subtract 11 on both sides: 5u = 45[Division Property of Equality] Divide 5 on both sides: u = 9Answer:
u = 9
Step-by-step explanation:
5u + 11 = 56
Subtract 11 from each side.
5u + 11 - 11 = 56 - 11
Simplify.
5u = 45
Divide each side by 5.
5u ÷ 5 = 45 ÷ 5
Simplify.
u = 9
I need help with social studies, math, science and Creative Expressions
Answer:
Ohhk mate
kindly let us know what help u need
Answer:
ok? so what the question?
Step-by-step explanation:
pleaseeeeeeeeeeeeeeeeeee answer
Answer:
The answer is y=x-5
Step-by-step explanation:
y=x-5
Please help me!!
Which of the following is the solution set for the equation |p−2|=7?
{ −5, 9}
{ −9, 9}
{ −5 }
{9}
Answer:
9the only correct answer is 9
Answer:
A
Step-by-step explanation:
p-2 ≥ 0
p ≥ 2
if p ≥ 2
p - 2 = 7
p = 9 (accettable)
if p < 2
-p+2 = 7
p = -5 (accettable)
please answer it soon
A truck is bought at the price of $60,000. The value decreases at the rate of .25 every year (t). The exponential expression 60,000(0.75)t describes this situation. Find the value of the truck at 2 years.
Answer:
$33750
Step-by-step explanation:
Replace t with 2. The correct formula is
[tex]60000(.75)^t[/tex] (t is an exponent)
With t = 2, the value of the truck is
[tex]60000(.75)^2=33750[/tex]
Could you help me with one of those two questions, please? Please
Answer
Step-by-step explanation:
Hope it helps you!
What is the value of x?
Answer:
x = 4
Step-by-step explanation:
If (and only if) we assume that the two horizontal lines are parallel, then angles 2x + 19 and x + 23 are equal:
2x + 19 = x + 23
or: x = 4
RS 1000 was distributed equally a anmong certain number of people. If there were 5 people more each would have received RS 20 less .Among how many people was the amount distributed? Find it.
Answer:
is answer 13.50781059 ?
Tara uses 8.8 pints of white paint and blue paint to paint her bedroom walls. 4 5 of this amount is white paint, and the rest is blue paint. How many pints of blue paint did she use to paint her bedroom walls?
Answer:
the blue paints of 1.76 pints is used to paint her bedroom walls
Step-by-step explanation:
Given that
Tara uses 8.8 pints of white paint
And, the 4 by 5 of this amount represent the white paint
We need to find out the number of paint used by the blue paint
So,
= 8.8 - (8.8 × 4 ÷ 5)
= 8.8 - 7.04
= 1.76 pints
Hence, the blue paints of 1.76 pints is used to paint her bedroom walls
Aaron is a chocolate vendor. He finds that he needs 25 identical sweet boxes to pack all the chocolates he has if he puts 24 chocolates per box. How many sweet boxes will he need to pack all the chocolates, if he puts only 30 chocolates in a box?Immersive Reader (1 Point)
Answer: 20 boxes of chocolates
Step-by-step explanation:
First find out the total number of chocolates he has:
= 25 boxes * 24 chocolates per box
= 600 pieces of chocolate
The number of boxes needed if the chocolates are packed 30 in a box is:
= Total number of chocolates / Number of chocolates per box
= 600 / 30
= 20 boxes of chocolates
If f(x) = 8x2-5, what is f(-1)
Answer:3
Step-by-step explanation:
Simply plug in -1 for anywhere you see x in the equation so...
8(-1)^2-5
8(1)-5
8-5
3
Hope this helps
Step-by-step explanation:
Remember math is a language
f(x) : A function of x where x can be any number including a number you choose
when you see f(-1), this tells you what the function is at this given x value. So you substitute - 1 wherever you see x
8(-1)2 - 5
will give brainiest!!
Find the volume of the cone.
9 cm
r = 6 cm
V = [?] cm3
Round to the nearest tenth.
Volume of a cone is equal to pi * r^2 * h/3.
In this case:
pi * 6^2 * 9/3
pi * 36 * 3
108pi
Answer: 339.3
Answer: 339.292006588 or V ≈ 339.29
Step-by-step explanation: Here is the formula that you need...
V = π [tex]r^{2}[/tex] [tex]\frac{h}{3}[/tex]
1. Multiply π (pi or approximately 3.14) by [tex]6^{2}[/tex] (36).
2. Multiply your answer from the last step which is 113.097335529 by [tex]\frac{9}{3}[/tex] or 3.
3. Final Answer should be 339.29 for the nearest tenth.
V = π [tex]6^{2}[/tex] [tex]\frac{9}{3}[/tex] which gives you...
V = 339.29
I hope this helped you!!
which ones plsss help
Write the word sentence as an equation.
The sum of nine and one-fourth of a number g is equal to a number h.
Answer:
9+1/4g = h
Step-by-step explanation:
Which value cannot represent the probability of an event occurring?
0.01
StartFraction 2 over 85 EndFraction
62.5%
1.1
Answer: Probability cannot be greater than 1
so it would be D 1.1
Step-by-step explanation:
Answer:
D. 1.1
Step-by-step explanation: Hello
What is the value of x?
Answer:
,
Step-by-step explanation:
A car has a value of £15000 at the start of the
year, at the end of the year the car is worth £14000.
What is the percentage decrease ?
Given :-
Value of car in start years Sv= $ 15,000Value of car in last years Ev = $ 14,000Find :-
% decrease .ExplanationUsing Formula
[tex]\boxed{\tt{\red{\:(Decrease)\:=\:(Sv\:-\:Ev)}}}[/tex]
==> Decrease value = 15000 - 14,000
==> Decrease Value = $1000
Now, Calculate % decrease .
★ % decrease = decrease × 100/Sv
==> % Decrease = 1000 × 100/15,000
==> % Decrease = 100/15
==> % Decrease = 6.67 % [ Ans]TRUE or FALSE
(a) In a scatterplot, the response is shown on the horizontal axis with the explanatory variable
on the vertical axis.
(b) If all of the data lie along a single line with nonzero slope, then the r
2 of the regression is
1. (Assume the values of the explanatory variable are not identical).
(c) If the correlation between the explanatory variable and the response is zero, then the slope
will also be zero.
(d) The use of a linear equation to describe the assocation between price and sales implies
that we expect equal differences in sales when comparing periods with prices $10 and $11
and periods with prices $20 and $21.
(e) The linear equation (estimated from a sequence of daily observerations):
Estimated shipments = b0 + 0.9*(Orders Processed) implies that we expect twice as many
shipments when the number of orders processed doubles only if b0 = 0.
(f) The intercept estimates how much the response changes on average with changes in the
predictor.
I'll do parts (a) through (c) to get you started
(a) False. The explanatory variable is always along the x axis, and the response variable is along the y axis. The response variable reacts to whatever the input explanatory variable is, hence the name "response".
---------
(b) True. If all data lie along a single straight line with nonzero slope, then either r = -1 or r = 1. If we have all data points on a line with some negative slope, then r = -1. If the regression slope is positive, then r = 1. Either way, it will lead to r^2 = 1 because (1)^2 = 1 and (-1)^2 = 1. In other words, there are two solutions to r^2 = 1 and they are r = -1 or r = 1. In the case of r = -1, we say the data has perfect negative linear correlation. With r = 1, the data has perfect positive linear correlation.
---------
(c) True. If r > 0, then we have some level of positive correlation which means the regression slope is positive in some way. If r < 0, then the regression slope is negative in some way. That must mean r = 0 leads to the regression slope having a flat horizontal line. This could mean one of two things: i) The points are all on or near the same curve such as a parabola, ii) The points are completely randomly scattered about. If case (i) happens, then it's better to use nonlinear regression instead of linear regression.
On selling 250 cascades, a man had an equal gain to the selling price of 25 cascades. Find his gain percent
Answer:
11.11%
Step-by-step explanation:
The selling price is 250
The cost price is 250-25
= 225
Therefore the gain can be calculated as follows
=250-225x/225x×100
1/9 ×100
= 0.1111×100
= 11.11%
Hence the gain is 11.11%
x=2
3x+4y=2
-6
4y=-4
y=1
Answer:
x= 1/22 and y=-1/4 (I'm assuming that the equal signs are the only separators of the equation sequence, since there is no indicator that the so-called "sentences" are actually apart.
Find the equation of the linear function represented by the table below in slope-intercept form.
X 0,1 ,2 ,3, 4
Y 9, 12. 15, 18, 21
Answer:
3x + 9
Step-by-step explanation:
for the y's, you increase by 3
for the b, it's the y-intercept
*y = mx + b
The parabola in the image has its focus at (4,3). Its directrix is the line y=1. The point (8,6) is on the parabola.
4
3
2
ol
Answer
:
Step-by-step explanation:
A bag contains eight red marbles and 12 green marbles you choose a marble out of the bag without looking what is the probability that you choose a red marble
Answer:
2/5
Step-by-step explanation:
Probability of choosing red = total red marbles / sum of marbles in the bag
sum of marbles in the bag = 12 + 8 = 20
8/20 = 2/5
Probability calculates the likelihood of an event occurring. The likelihood of the event occurring lies between 0 and 1. It is zero if the event does not occur and 1 if the event occurs.
For example, the probability that it would rain on Friday is between o and 1. If it rains, a value of one ids attached to the event. If it doesn't a value of zero is attached to the event.
A TV is priced at $475.25. There is a 7% sales tax rate. What is the sales tax for the TV in dollars and cents?
Answer:
$33.27
Step-by-step explanation:
A middle school took all of its 6th grade students on a field trip to see a ballet at a theater that has 1300 seats. The students filled 1001 of the seats in the theater. What percentage of the seats in the theater were filled by the 6th graders on the trip?
Find the distance between the points (4,0) and (0, 3).
Step-by-step explanation:
Given points are (4,0) and (0,3)
The distance between these two points =√(0-4)^2+(3-0)^2
=√16+9
=√25
=5 units
Answer:
(4,0) = ([tex]x_{1}[/tex],[tex]y_{1}[/tex])
(0,3)=([tex]x_{2} ,y_{2}[/tex])
distance between the points = [tex]\sqrt{(x_{1}-x_{2})^2 + (y_{1}-y_2 )^2 }[/tex]
distance=5
Step-by-step explanation: