Mary is 36 and her son is 12
m=3s
m+12=2s+24
12= -s+24
s=12
Consider these statements written in ordinary language:_______.
A. The speed of the car is proportional to the distance it has traveled.
B. The car is speeding up.
C. The car is slowing down.
D. The car always travels the same distance in the same time interval.
E. We are driving backwards.
F. Our acceleration is decreasing. Denoting by s(t) the distance covered by the car at time t, and letting k denote a constant, match these statements with the following mathematical statements by entering the letters A through F on the appropriate boxes:_______.
s ′′ <0. s″<0.
s ′ s′ is constant
s ′ <0 s′<0
s ′′′ <0 s‴<0
s ′′ >0 s″>0
s ′ =ks s′=ks
Correct question is;
Consider these statements written in ordinary language:
A The speed of the car is proportional to the distance it has traveled.
B The car is speeding up.
C The car is slowing down.
D The car always travels the same distance in the same time interval.
E We are driving backwards.
F Our acceleration is decreasing. Denoting by s(t) the distance covered by the car at time t, and letting k denote a constant, match these statements with the following mathematical statements by entering the letters A through F on the appropriate boxes:
s′′<0.
s′ is constant
s′<0
s′′′<0
s′′>0
s′=ks
Answer:
Answers given below.
Step-by-step explanation:
F) acceleration is the second derivative of distance with respect to time.
Thus; s'' < 0
D) Car travels the same distance in the same time interval. This means the speed is constant. Speed is the first derivative of distance with time. Thus;
s' is constant
E) Driving backwards means that speed is; s' < 0
C) Car is slowing down means negative acceleration. Thus; s'' < 0
B) Car is speeding up means acceleration is greater than 0. Thus: s'' > 0
A) Car speed being proportional to the distance it has covered means that; s' ∝ s. Thus;
s' = ks
You share your packet of 48 jelly beans with your sister in the ratio 5:3. How many
jelly beans will you get?
(3)
Answer:
30 jellybeans
Step-by-step explanation:
5 + 3 = 8 (Total units of jellybeans)
8 units = 48
1 unit = 48 ÷ 8 = 6
Me : Sister
5 : 3
Since I get 5 units...
5 units = 6 x 5 = 30
HELP 20 POINTS IF YOU HELP ME HURRY!!!
Which shows the correct dimensions of the rectangle in both scales?
O Scale 1: 40 ft by 56 ft; Scale 2: 35 ft by 40 ft
O Scale 1: 56 ft by 25 ft Scale 2: 35 ft by 40 ft
O Scale 1:35 ft by 25 ft; Scale 2: 56 ft by 40 ft
O Scale 1.56 ft by 40 ft: Scale 2: 35 ft by 25 ft
Answer:
it’s c:)
Step-by-step explanation:
hi can you guys help me with this pleaseee
Answer:
For the fractions question:
1/4<1/2
3/4<2/3
5/7<3/5
8/9>8/10
7/10<6/8
Hope this helps! (:
Scott is saving coins in a jar. Last week, the jar was 1/4 full. This week, he added more coins, and the jar is now 1/2 full. How much of the jar did Scott fill this week?
Answer:
Scott filled (1/2 - 1/4) of the jar, or 1/4 of the jar this week.
Let me know if this helps!
Answer:
He filled his jar 1/4 more this week.
Step-by-step explanation:
The explanation is very simple, you know that he added 1/4 coins last week and this week he added more coins that filled the jar half way:
1/2 - 1/4 = 1/4
or you can also use:
1/4 + 1/4 = 1/2
A holiday store is having a sale on bows and rolls of wrapping paper. One sign in the store states, “Buy 1 bow and 1 roll of wrapping paper for only $6.00.” A second sign in the store states, “5 bows and 1 roll of wrapping paper will only cost $10.00.”
In dollars and cents, the cost of a single roll of wrapping paper costs $
.
Answer:
3.00
Step-by-step explanation:
One bow and and 1 roll of wrapping paper cost 6.00$
so the roll by itself would cost 6.00$
0.66 divided by 0.3 = ? Divide. Check your answer using multiplication
Answer: The answer is: 2.2
~hopefully this helps you, have a gr8 day my friend!~
Step-by-step explanation:
A researcher compares the effectiveness of two different instructional methods for teaching pharmacology. A sample of 51 students using Method 1 produces a testing average of 81.6. A sample of 76 students using Method 2 produces a testing average of 76.4. Assume the standard deviation is known to be 12.24 for Method 1 and 11.19 for Method 2. Determine the 90% confidence interval for the true difference between testing averages for students using Method 1 and students using Method 2. Step 2 of 2 : Construct the 90% confidence interval. Round your answers to one decimal place g.
Answer:
90% confidence interval is: ( 1.7 to 8.7 )
Step-by-step explanation:
Given the data in the question;
Method 1 Method 2
n₁ = 51 n₂ = 76
x"₁ = 81.6 x"₂ = 76.4
σ₁ = 12.24 σ₂ = 11.19
Lets get the Margin of Error(M.E)
M.E = [tex]Z_{\alpha /2[/tex] √(σ₁²/n₁ + σ₂²/n₂ )
for 90% confidence interval
∝ = 1 - 0.90 = 0.10
∝/2 = 0.10/2 = 0.05
[tex]Z_{\alpha /2[/tex] = [tex]Z_{0.05[/tex] = 1.64
so we substitute
M.E = 1.64 × √((12.24)²/51 + (11.19)²/75 )
M.E = 1.64 × √( 2.9376 + 1.669548)
M.E = 1.64 × √( 2.9376 + 1.669548)
M.E = 3.52
so, for 90% confidence interval for x"₁ - x"₂ will be;
C.I = x"₁ - x"₂ ± [tex]Z_{\alpha /2[/tex] √(σ₁²/n₁ + σ₂²/n₂ )
= 81.6 - 76.4 ± M.E
= 81.6 - 76.4 ± 3.52
= 5.2 ± 3.52
Lower Limit = 5.2 - 3.52 = 1.68 ≈ 1.7
Upper Limit = 5.2 + 3.52 = 8.72 ≈ 8.7
Therefore; 90% confidence interval is: ( 1.7 to 8.7 )
what is the length of x
Answer:
20
Step-by-step explanation:
each of the side lengths are multiplied by 2.5
2. Divide using the synthetic division.
--7| 1 8 -49 -392
Answer: goole
Step-by-step explanation:
49-392 +7/ 18
Which expression is equivalent to d-6d-3dd−6d−3d?
From the given expression in our example we have say
y = d-6d-3dd−6d−3d,
the equivalent expression would be y = -14-3dd
We can see two different terms
the "d" terms and the "dd" terms
Let us collect like terms
we have
y= d-6d-6d-3d-3dd
y = d-12d-3d-3dd
y= d-15d-3dd
y = -14-3dd
Hence the equivalent expression is y = -14-3dd
Learn more amount collecting like terms in algebraic expression https://brainly.com/question/11172004
Answer:
-8d
guessed and it was right :P
In AABC, what is the measure of 2C?
108°
36°
6xº
20°
2x°
2x
18°
Answer:
36º
Step-by-step explanation:
The sum of a triangle's angles is 180. So, 6x+2x+2x=180. And, 10x=180, and then x=18. Angle C is 2x. To find angle C multiple 18 by 2 to get 36.
(PLEASE HELP!)
How do you create a linear inequality in two variables?
A. The set of all the points on one side of a line.
B. Change the symbol = to > or <.
C. An ordered pair of real numbers with the following property: When the x-coordinate is substituted for x and the coordinate is substituted for y in the inequality, we obtain a true statement.
D. If the original inequality contains a < or > symbol.
F. If the original inequality contains a less than, equal to or greater than, equal to symbol.
Linear inequalities with two variables have infinitely many ordered pair solutions, which can be graphed by shading in the appropriate half of a rectangular coordinate plane. To graph the solution set of an inequality with two variables, first graph the boundary with a dashed or solid line depending on the inequality.
Samuel says that 25% is greater than 0.3.
Is he correct? Explain your answer.
Answer: No 0.3 as a percentage is larger than 25%
Step-by-step explanation:
'percent' is 'over hundred'
if you convert 0.3 into a percentage it becomes 30 percent
Samuel says that 25% is greater than 0.3 is not correct statement.
What is Percentage?A percentage is a number or ratio expressed as a fraction of 100.
The percentage is denoted by the symbol %.
The percentage is used or most important application is to compare any two quantities. We compare one quantity against another, with the second quantity rebased to 100 by using percentage.
Samuels says that 25% is greater than 0.3 is a false.
25% when it is converted to decimals.
25 divided by 100
we will get 0.25
and if 0.3 is converted to percentage
0.3×100=30%
We know that 30% is greater than 25%.
hence Samuel says that 25% is greater than 0.3 is not correct.
To learn more on Percentage click:
https://brainly.com/question/28269290
#SPJ2
struggle helpppppppp
Answer:
49
Step-by-step explanation:
|-7|=7, and 7*7 = 49
Two angles are complementary. The sum of
measurement of the first angle and half the measurement of the second
is 65. Find the measures of
the angles.
Answer:
x+y= 90
x+ y/2= 65
90-65= 25
y= 2*25= 50
x=40
Step-by-step explanation:
Can you please help I am getting graded:) show work too please
Answer: A - 33/100
Step-by-step explanation:
You have to multiply the first fraction by 10 to make 100 the least common denominator - 3/10(10) = 30/100
Add 30/100+3/100 = 33/100
How do I solve this problem. 7a+2=3a+1
Answer:
a= - 1/4
Step-by-step explanation:
Answer:
- 1/4
Step-by-step explanation:
7a + 2 = 3a + 1
subtract the 1 from both sides
7a + 1 = 3a
subtract 7a from both sides
1 = - 4a
divide by - 4
A = - 1/4
1. In a full paragraph: how did militarism contribute to World War I?
please help me i really need help please
Answer: Militarism could have cause the war due to the naval and arms race. The main event of Militarism causing World War one was the naval rivalry which was made after 1900. Britain had the most powerful navy in the world. The new Keiser Wilhelm announced his intention to build a bigger German navy than Britain. Britain felt very threatened by this. Germany’s navy was much smaller than Britain’s navy but the British army was put all over its colonies so they can be protected. Germany didn’t have a big Empire like Britain but most people agreed, at the time, they were the best trained and the most powerful. The Kaiser felt he needed a bigger navy than Britain to protect its country.
hacer una representación gráfica para nuestro caso tenemos por un punto M pasan infinitas rectas?
Answer:
make a graphical representation for our case do we have infinite lines pass through a point M?
Step-by-step explanation:
If the graphs of the equations do not intersect (for example, if they are parallel), then there are no solutions that are true for both equations. If the graphs of the equations are the same, then there are an infinite number of solutions that are true for both equations.
Please answer right! Thank you I will give brainalist
Answer:
C [tex]\leq 34[/tex]
Step-by-step explanation:
Answer:
34is the answer gor the question
5x - 2 = 3х + 4
Help
Answer:
x=3
Step-by-step explanation:
5x - 2 = 3x +4
=> 5x - 3x = 4 + 2
=> 2x = 6
=> x = 6/2 = 3
What’s the answer to this?
Answer:
B is the answer
Step-by-step explanation:
(i had to write something here, the question is down below)
Answer:
A every other student who buys lunch
Step-by-step explanation:
Choosing students who buy lunch to survey how many buy pizza is the most reasonable answer. I hope this helps!
By graphing the quadratic function f(x) = 8 +2x -x^2, find the x-intercepts. (Select all that apply)
A. (0,8)
B. (-2,0)
C. (0,4)
D. (4,0)
Answer:
one of the answer is 0,8
the other one I have no idea
Answer:
Step-by-step explanation:
the answers to this are
A. (0,8)
B. (-2,0)
D. (4,0)
hope this helps!
I WILL GIVE MAX POINTS IF YOU WRITE STEPS AND SOLVE PLZZZZZZ
Answer:
Step-by-step explanation:
so we need two even intergeters that add to 70 when we multiply the bigger by 2 and add the smaller to that soooo
70= 2*y + x
but we can express x in terms of y b/c it's a consecutive even integer soo
(b/c x+2 = y, then x = y -2)
70= 2*y + (y-2)
70 = 2y + y - 2
72 = 3y
24 = y :) nice the bigger is 24 so the smaller is 22
70 = 2*24 + 22
70 = 48 + 22
70 = 70 nice !
bigger = 24
smaller = 22
:)
Answer:
bigger = 24
smaller = 22
Step-by-step explanation:
Which of these are expressions?
Check all that are true.
a/9
2 + 5
7
8 × 9 - 5 = 72 - 5
0 + 0
Answer:
a/9
2+5
0+0
maybe 7
an expression is any problem that does NOT have an equal sign
Answer:=7
Step-by-step explanation:
2+5
0+0
maybe 7
an expression is any problem that does NOT have an equal sign
canbyall help me pleaser
Answer:
13
Step-by-step explanation:
How do I identify Outliers
Y= 6x + 17. What is the slope of the equation
Answer:
m = 6
Step-by-step explanation:
standard equation of a line: y = mx + b
So, the slope of this equation is 6.