Answer:
41 mphStep-by-step explanation:
s₁ = s₂ = x {the distance from A to B}
s = s₁ + s₂ = x + x = 2x {the distance of the round trip}
t = t₁ + t₂ {the time of the round trip}
v₁ = 30 mph
v₂ = 65 mph
t₁ = s₁/v₁ = x/30 h {the time of trip from A to B}
t₂ = s₂/v₂ = x/65 h {the time of trip from B to A}
The average speed:
[tex]v=\dfrac st=\dfrac{2x}{\frac x{30}+\frac x {65}}=\dfrac{2x}{x(\frac 1{30}+\frac1 {65})}=\dfrac{2}{\frac{13}{390}+\frac6{390}}=2\cdot\frac{390}{19}=41.05263...\approx41[/tex]
6. Solve the following equation for y.
3x - 4y = 6
Answer:
3x−4y+−3x=6+−3x
−4y=−3x+6
Step 2: Divide both sides by -4.
−4y
−4
=
−3x+6
−4
y=
3
4
x+
−3
2
Step-by-step explanation:
Answer:
y = 0.75x - 1.5
Step-by-step explanation:
3x - 4y = 6
-4y = -3x + 6
y = 3/4x - 6/4
y = 0.75x - 1.5
hope this helps, pls mark brainliest :D
Samuel scored a 32.5/40 on his most recent math test what percent did he earn in the test round to the nearest whole percent
Answer: 81%
Step-by-step explanation:
From the question, we are informed that Samuel scored a 32.5/40 on his most recent math test.
Based on the values given, to convert it to percentage, we have to multiply the score by 100. This will be:
= 32.5/40 × 100
= 3250/40
= 81.25%
= 81% to nearest whole number
please answer i will give you brainiest!!!!!!!!!!!!!!!!!!
Answer:
I'm pretty sure it's A because its showing that the line starts from 1 and goes up if that makes sense.
Answer:
B
Step-by-step explanation:
x < 1 means that x is lesser than 1. A shows x is more than 1 so it is wrong. C shows x is more than -1 which is not entirely true since x could be more than -1, but not less than 1. However, the line in C stretches all the way to 8 which is more than 1 so it is wrong. D shows that x is lesser than -1, but x could have been 0 or -1, so it is not true either.
Which absolute value number sentence is false? a. 171 +1-6 = 13 b. 1-151 - 1-8] = 7 c. 1-12 + 1-2 = 10 d. 1111 - 1-41 = 7
Answer:
C.
Step-by-step explanation:
This is because the absolute value of -12 is 12 and the absolute value of -2 is 2. So then the equation would look like this: 12 + 2 = 10, which is a false equation.
Hope this helps!
Enter the coordinates of the vertices of (r(270°,O) ∘ T⟨1, −2⟩)(QRST).
Answer:
where bro i will let you know in the comments section
order these numbers from from least to greatest
27 3/9 1/5 1.23 75%
Answer:
I don't know...jkkk
Step-by-step explanation:
First put the fractions and percents as decimals
27, 0.5,0.2, 1.23, 0.75
Now you can easily order them from LEAST to GREATEST
0.2,0.5,0.75,1.23,27
Hope this helps! :)
Hi! Please help me solve this:
How did the temperature change if:
at first it decreased by 10% and then by 30%?
(I need the percent value)
Answer
by 20%????
Step-by-step explanation:
Find the value of
[tex] log_{8}^{512} [/tex]
please help friends....
Answer:
3
Step-by-step explanation:
log 8 512 = 8^ x=512. x=3
Hope this helps :D
Linda had a previous balance of $1,000 and made an on-time credit card payment of $800. She has a credit line of x dollars and made purchases totaling y dollars. Write an algebraic expression that represents her current available credit.
Answer:
[tex]x-200+y[/tex]
Step-by-step explanation:
We can determine the algebraic expression that represents her current available credit by first finding her new balance using the formula:
Previous balance - Payments + Total Purchases = New balance
where, previous balance = $1000; payments = $800; total Purchases = y
New balance = [tex]1000-800+y[/tex]
Next, to find her Credit balance or current available; we use the formula; Credit line - New balance
where credit balance = x; new balance = [tex]1000-800+y[/tex]
Current available credit = [tex]x-200+y[/tex]
Write the equation of the line parallel to the line 3x + 5y = 7 and passes through the point (-1, 3) in standard form.
58.6 km/h in cm/min solve and explain me
Answer:
PLEASE MARK AS BRAINLIEST!!!!!!!
58.6 kilometer/hour = 97666.666667 centimeter/minute
Step-by-step explanation:
How to Convert Centimeter/minute to Kilometer/hour
1 cm/min = 0.0006 km/h
1 km/h = 1666.6666666667 cm/min
Example: convert 15 cm/min to km/h:
15 cm/min = 15 × 0.0006 km/h = 0.009 km/h
Need help ASAP please
Answer:
=
Step-by-step explanation:
Round off 12 and get 10
how many times can 23 go into 26
Answer: 1.13043478 times
Step-by-step explanation:
just get 10 points get some points have fun use them wizely
Answer:
thank you
Step-by-step explanation:
What is the solution for 4x +14 = 66
Answer:
x = 13
Step-by-step explanation:
4x + 14 = 66
-14 -14
---------------------
4x = 52
---- ----
4 4
x = 13
Solve l5+2xl < 17
(I couldnt find the brackets soo, yea. THANKS!)
Answer:
X<6
Step-by-step explanation:
Subtract 5 to the other side, so 2x is by itself. 2x<17-5, which is reduced to 2x<12. Divide by 2 so x is by itself. x<6.
Answer:
-11 < x < 6
Step-by-step explanation:
Which of the following is divisible by 5 but not 10 ? 230, 255, 260, 500
Answer:
255 -_-
Step-by-step explanation:
230 is divisible by both
260 is divisible by both
500 is definitely divisible by both
Just use your calc
Line A Is Parallel To Line B. If The Measure Of Z7 Is 114”, What Is The Measure Of 3
Answer:
114°
Step-by-step explanation:
because they are parallel they have the same measure
The measure of angle 3 is equal to 114° when angle 7 is 114° by the corresponding angle property.
What are correspondence angles?The angle is defined as the span between two intersecting lines or surfaces at or close to the point where they meet.
According to the definition of corresponding angles, when two parallel lines cross the third one, the angles that are in the same relative position at each intersection are referred to as being corresponding angles to one another.
In the image, it is given that angle 7 is 114 degrees. As in the image, the two parallel lines a and b are cut by the transversal line. The given angle 7 is 114°.
From the correspondence angle property, the two angles on the same side of the transversal line will be equal to each other. The angle 3 will be calculated as:-
∠7 = ∠3
114 = ∠3
Therefore, angle 3 will be 114°.
To know more about an angle follow
https://brainly.com/question/25770607
#SPJ5
use standard algorithm to solve
1,457 x 56
Solve. x =
A
41°
B.
C
Plz help me fast
Answer:x= 49°
Step-by-step explanation:
What is a GEM math program?
Answer:
Gifted European Mathematicians (G.E.M.) project
Step-by-step explanation:
hope it is correct
PLEASE HURRY.
24. Factor completely
(1 Point
14x^3 – 16x^2 + 21x – 24
Answer:
(7x - 8)(2x² + 3)
Step-by-step explanation:
Given
14x³ - 16x² + 21x - 24 ( factor the first/second and third/fourth terms )
= 2x²(7x - 8) + 3(7x - 8) ← factor out (7x - 8) from each term
= (7x - 8)(2x² + 3)
A box contains 4 blue chips and 5 black chips. If two chips are drawn at random with replacement, what is the probability that both will be blue
Answer:
Step-by-step explanation:
divide the number of blue chips over the total chips
the probability that first one will be blue 4/9
the probability that second one will be blue 4/8
Which graph represents the function f(x) =-x|–2?
Answer:
C.
Step-by-step explanation:
Which point is located at (4, 1)?
A
B
C
D
Answer:
A is located at (4,1)
Step-by-step explanation:
The first number will always be on the x-axis and the second will always be on the y-axis. For example: (x,y) so A is (4,1) , B is (-4,1), C is (1,4) and D is (-1,4).
Hope this helps! ;)
Final Answer: Point A
Steps/Reasons/Explanation:
Question: Which point is located at [tex](4, 1)[/tex]?
The x-axis would be 4 and the y-axis would be 1. The x-axis is horizontal and the y-axis is vertical.
For the x-axis, it tells you the markings of the numbers, so moving to the right would be positive and left would be negative.
For [tex](4, 1)[/tex] we would go four to the right and one up. Point A is located there.
~I hope I helped you :)~
At McCord Middle school, 40 percent of the 500 students ride their bikes or walk home. How many students ride their bikes or walk to school A. 12 B. 80 C. 200 or D. 2,000 it is not D. tho
Answer:
200
Step-by-step explanation:
C
simplify: -7 - 8
Change 1 6/7 to a decimal round to the nearest tenth.
Answer:
-15
1.9
Step-by-step explanation:
-7 - 8 = -15
1 and 6/7 = 1.857142857142857142857142.....
about 1.9
15 out of 20 students own hand-held games; 105 out of 160 students own hand held games. PLEASE HELP ME ASAP
Answer: No the ratios are NOT related
Step-by-step explanation:
9) How much edging is needed to go
around a bulletin board that is 3 feet
high and 2 feet wide?
Answer:
10 feet worth
Step-by-step explanation:
3+3=6
2+2=4
6+4=10
what is the area if b=16mm and h=12mm
Answer: 96
Step-by-step explanation: the formula for area of a triangle is 1/2 (b)(h)
so 1/2 (16)(12)
= 96