Answer:
11
81
Step-by-step explanation:
x = 7y + 4
x + y = 92
Solve for x in the second equation
x = 92 - y
92 - y = x
Equate the 2 xs
92 - y = 7y + 4 Add y to both sides
92 = 7y+y + 4 Combine
92 = 8y + 4 Subtract 4 from both sides
88 = 8y Divide by 8
88/8 = y
y = 11
===========
x = 7y + 4
x = 77 +4
x = 81
8 oranges cost $.78. How much will he spend to buy 40 oranges
Answer:
$3.90
Step-by-step explanation:
To get from 8 to 40, you multiply by 40/8, so you have to do the same to $.78. .78 * 40/8 is equal to 3.9, which would be $3.90.
Patrick drives from P to Q at an average speed of 40 mph . His drive back from Q to P is at an average speed of 45 mph and takes two minutes less.
How far, in miles, is it from P to Q?
Answer:
Distance=12 miles
Step-by-step explanation:
d=distance
t=time going
d/t=40 mph going
t-2/60=time returning (2 minutes/60 minutes per hour)
d/(t-2/60)=45 mph returning
set up equations:
d=40t
d=45(t-2/60)
substitute:
40t=45(t-2/60)
40t=45t-90/60
40t=45t-3/2
0=5t-3/2
5t=3/2
t=0.3 hours or 18 minutes
(time returning=16 minutes)
substitute:
d=40t=40(0.3)
d=12 miles
P and Q are 12 miles far from each other.
Given that
Patrick drives from P to Q at an average speed of 40 mph
Also he drives from Q to P at an average speed of 45 mph
Let "s" be the distance between P and Q in miles.
Let "t" be the time in minutes
There are 60 minutes in 1 hours
[tex]\rm So \;in \; "t" \; minutes \; there\; will\; be = \dfrac{t}{60} \ hours[/tex]
By the definition pf average speed we can write that
[tex]\rm Average \; Speed = \dfrac{Total \; distance }{Total \; time}\\[/tex]
The speed is given in two situations in miles per hour
Case 1 When average speed = 40 mph
[tex]\rm 40 = \dfrac{s}{t/60} \\\\\rm {40 = \dfrac{60s}{t} .....(1) }[/tex]
Case 2 When average speed = 45 mph
Given that Patrick takes two minutes less
[tex]\rm 45 = \dfrac{s}{(t-2)/60} \\\\45 = \dfrac{60s}{t-2 } ....(2)[/tex]
Solving for "s" from equations (1) and (2) gives us
[tex]\rm \bold {s = 12}}[/tex]
So we can conclude that P and Q are 12 miles far from each other.
For more information please refer to the link given below
https://brainly.com/question/21470320
i cant figure out 5/4 divided by 3/5
Answer:
25/12 is the answer
I hope it helps you
Answer:
0.0833333333
Step-by-step explanation:
id.k if correct i just g00gled it
9
R and T are two mutually exclusive events.
P(R) = 0.2 and P(R or 1) = 0.69
Work out P(not T).
Answer:
P(not T ) = 0.51
Step-by-step explanation:
Step(i):-
Given that the R and T are two mutually exclusive events
P(R∩T) = 0
Addition theorem on probability
P(RUT) =P(R)+P(T) - P(R∩T)
P(RUT) =P(R)+P(T) - 0
P(RUT) =P(R)+P(T)
Step(ii):-
Given P(R) = 0.2 and P(RUT) = 0.69
P(RUT) =P(R)+P(T)
P(T) = P(RUT) -P(R) = 0.69 -0.2
P(T) = 0.49
P(not T) = 1- P(T)
P(not T ) = 1 - 0.49 = 0.51
Final answer:-
P(not T ) = 0.51
help please WILL GIVE BRAINLIEST TO RIGHT ANSWER!
All triangles are equal to ______ degrees
Answer:
180
Step-by-step explanation:
Help me please!! Thank you:)
Answer:
4, 12, 20, 28, 36
Step-by-step explanation:
to find Y you have to multiple x times 4 then subtract by 4
example: x=2 so you do 2(4) - 4
2(4) is 8 and 8 - 4 is 4
y = 4 and so on
Please help me......
Answer:
He's moving 10 meters a second, and the slope is 1/1
Step-by-step explanation:
Find the 10th term of the arithmetic sequence in which 12 and d = 9.1.
Answer:
The 10th term=93.9
Step-by-step explanation:
[tex]a_{10} =12+(n-1)9.1\\ = 93.9[/tex]
Line L is shown in the coordinate plane.
What are the coordinates of D?
Answer:
The coordinates of D is actually (8,10)
Step-by-step explanation:
8,10
did the math by counting up with y and x axis
Answer:
y = (5x) / 4 <----Line l
Step-by-step explanation:
(y - 5)(8 - 4)=(x - 4)(10 - 5)
4y - 20 = 5x - 20
can someone explain this to me? PLEASE HELP FAST!!
Answer:
49.298
Step-by-step explanation:
Radio × π²
5×3.14²
5×9.8596
49.298
1
What is the slope of the line that passes through (2, 2) and (5,4)?
Answer:
The slope of the line= 2/3
Step-by-step explanation:
(2, 2)=(x, y) and (5, 4)=(`x, `y)
The formula for finding slope= `y-y/`x-x
4-2/5-2
2/3
Therefore, the slope=2/3
The perimeter of a rectangle is 48 cm. The length is 3 times as long as the width.
What is the width of the rectangle?
A. 4cm B.6cm C.8cm D.12.cm
a + 6 + 3a + 5a2 + 2a + a2 + 1
Answer:
6a2 + 6a + 7
Step-by-step explanation:
can someone please answer this question the person to get it right gets brainiest!
What is 3 1/4 as a fraction
Answer:
13 / 4
Step-by-step explanation:
If 150 miles is 25% of a race, what is the length of the entire race?
3,750 miles
600 miles
37.5 miles
6 miles
Answer:
600 miles
Step-by-step explanation:
150x4=600
The solution of 25x=300 is
Answer:
The solution of 25x = 300 is 12 . The solution of 25x > 300 is all values greater than 12 .
Step-by-step explanation:
Since the solution to 12x = 300 is 12, any number that is greater than 12 will also be a solution!
Simplify the following expression,
3 + 4(2b - 5)
Answer:
8b−17
HOPE I HELP BRAINLYY PLZZZ
F (x) = 3x+2 find f(-4)
Answer:
Step-by-step explanation:
If anyone willing to help, I'll be glad :)
Answer:
22
Step-by-step explanation:
Since its a parallelogram, opposite sides are congruent. Therefore:
BC = AD
a - 1.5 = 20.5
+1.5 +1.5
a = 22
Answer:
a=22
Step-by-step explanation:
a-1. 5 =20. 5 ( opposite side of parallelogram are equal )
or, a=20. 5+1. 5
or, a=22
you can do it from another side too.
2a-20. 8 = a + 1. 2 ( opposite side of parallelogram are equal )
or, 2a - a = 1. 2 + 20. 8
or, a = 22
Hope it will help you ☺✌
One of the heaviest rainfalls recorded in Greentown in a 24-hour period was 178.8 centimeters. If the rainfall was constant. how many centimeter of rain fell during each hour
Answer:
7.45cm
Step-by-step explanation:
178.8 ÷ 24 hours = 7.45 centimetres per hour.
An airplane can stay in the air for 6 hours..it has been in the air for 2.5 hours
The probability of an event is 0.001.
Which of the following best describes the event?
A The event will never occur.
B There is a small chance that the event will occur.
C The event is likely to occur.
D The event will definitely occur.
B
Step-by-step explanation:
it would be a if the chance was 0.000 but it's 0.001 so there is a very very small chance of it happening
Answer:
Step-by-step explanation:
0.001 means 1/1000
The answer depends on what is being described.
If you are putting money into a lottery if you got odds of 1 in a 1000, you'd jump for joy at such good odds.
If you are putting money into the stock market and the chances of getting any kind of return is 1/1000, I think you'd start looking for something else to do.
That said, I think the answer you want is B, but I'm not fond of the question.
A hen has 50 eggs, she gives .5 to her hubby and they multiply that by 2 how much do they get
This question is just for fun :)
Answer: 50 lol it's the same
Step-by-step explanation: 50*.5 equals 25*2 equals 50 lol have a good day
Answer:
69
Step-by-step explanation:
it is a funny question
Is 12r - 5 the same as -5 + 12r
I'm so tried plz help-
Answer:
Yes there are same because
Let r=1
then
12r-5 = ( 12*1)-5 = 12 -5 = 7
but
-5 + 12r = -5 + (12*1) = -5 + 12 =7
What is x?
4x(2x+6)=8x²(23-5)
pls, help for the first person to answer I will give them a brainlist.
Answer:
x= 3/17
Step-by-step explanation:
4x(2x+6) =8x^2(23-5)
8x^2 +24x = 144 x^2
24x = 136 x^2
24= 136 x
x=24/136
x=3/17
what is this 2x-5+22=?
Answer: 2x+17
Step-by-step explanation: add -5 and 22
______________________________
1.) Add −5 and 22:[tex]-5+22=17[/tex]
- You could also solve this by flipping the numbers around and subtracting 22 - 5, Which still gives you 17.
So your answer is [tex]\bold{(2x+17)}[/tex].
______________________________
9. Only 12 students can be in the next school play.
Let t represent the number of students who tried
out for the play. The number of students who tried
out but did not get a role is 42.
please help asap with legit answers
Answer:
D
Step-by-step explanation:
Just combine like-terms