Answer:
She can make 5 trips.
Step-by-step explanation:
A motorboat travels 440 km in eight hours going upstream and 510 km in six hours going down stream what is the rate of the boat in Still water and what is the rate of the current
Answer:
Rate of boat in still water = 70 km/hr
Rate of current = 15 km/hr
Step-by-step explanation:
Let the speed of motorboat in still water = [tex]u\ km/hr[/tex]
Let the speed of current = [tex]v\ km/hr[/tex]
Equivalent Speed upstream = [tex](u-v)\ km/hr[/tex]
Equivalent Speed downstream = [tex](u+v)\ km/hr[/tex]
Distance traveled upstream = 440 km
Time taken upstream = 8 hours
Using the formula:
[tex]Speed = \dfrac{Distance}{Time}[/tex]
[tex]u-v = \dfrac{440}{8}\\\Rightarrow u -v=55 ..... (1)[/tex]
Distance traveled downstream = 510 km
Time taken downstream = 6 hours
[tex]u +v = \dfrac{510}{6}\\\Rightarrow u+v=85 ...... (2)[/tex]
Adding (1) and (2):
[tex]2u = 140\\\Rightarrow u = 70\ km/hr[/tex]
By equation (1):
[tex]v = 85-70\\\Rightarrow v =15\ km/hr[/tex]
Therefore, the answer is:
Rate of boat in still water = 70 km/hr
Rate of current = 15 km/hr
If h(r) = 2/3r - 6, what is the value of h(-9)?
Answer:
h=-12
Step-by-step explanation:
а О 130
The answer to 15 divide 375 what is the answer
Answer:
the answer would be
Step-by-step explanation:
Answer: The answer is .04
Step-by-step explanation:
Diego bought a school textbook that cost $56.18 This amount includes a tax of 6.60%. What was the cost of the book before the tax?
Answer:
The answer is $59.89 after sales tax.
Step-by-step explanation:
I WILL GIVE U BRIANLIEST THING!!!
slope is 6 and the y-intercept is 5
pls, i need the equation. ty<3
Answer:
The equation of line with slope m and y-intercept b is given by
y=mx+b
Therefore, the equation of line with slope 6 and y-intercept 5 is
y=6x+5ep explanation:
y-y2= m(x-x) coordinates of a point on the line
Answer:yes 5,5
Step-by-step explanation:
SOMEONE help me with this plz pretty plz
Answer:
Step-by-step explanation:
your slope is -2.
your y intercept is 190
y=-2x+190
Please help me with this question! Thank you :)
Answer:
y=x-3
Step-by-step explanation:
Graph y=x-5 and the point (1,-2). You want your slope to be the same for the lines to be parallel. The slope in the given equation is 1/1. Type into a graphing calculator y=x- and pick a number greater than negative five since the point (1,-2) is above the given line. Guess and checking reveals -3 to be the correct answer. Therefore, your answer is y=x-3.
She need help again
Answer:
im in 3rd grad
Step-by-step explanation:
Answer:
-4
Step-by-step explanation:
(-4,5)
(x,y)
yep.....
pls help ill mark brainliest I dont have much points.
Answer:
I think its Jenny's
Step-by-step explanation:
because when u add more egg it could lessen the effect of being cheesier however u can put neither because it was both the same amount that was put in
Which figure shows that
What is the slope of the line that contains these points?
slope:
Answer:
The slope is -4
Step-by-step explanation:
hope this helps
(-7,21),(-6,17)
17-21/(-6)-(-7)
=-4/1
= -4
(-5,13),(-4,9)
9-13/(-4)-(-5)
=-4/1
= -4
Is (-5,0)(0,0)(5,0)(5,10)(10,10) a function
Answer:
yes it is a function
Step-by-step explanation:
Craig wants to use an elevator to carry identical packages having the same weight each package weighs 4 pounds and Craig weighs 90 pounds if the elevator can carry a maximum of 330 pounds at a time which NE quality shows the maximum number of packages in that crag can carry with him self in the elevator if he is the only passenger
Answer:
He can carry 60 packages
Answer:
he can carry 60 packages with him if hes the only passenger
Step-by-step explanation:
− 4 /5 + 40/75 +100%
Answer:
0.266666666
Step-by-step explanation:
Calculate the slope between the points: (-4,5) and (0,-2)
To find the slope, use the formula y2-y1 / x2 - x1.
x1 y1 x2 y2
-4 5 0 -2
Plug these in.
-2-5 / 0- -4
-7/ 4 is your slope.
And question 2 is use your knowledge of central and inscribed angles to find M.
Please help y’all
Answer:
∠ RQS = 138°
Step-by-step explanation:
Since PR and PS are tangents to the circle, then
∠ QRP = ∠ QSP = 90°
The sum of the interior angles of PRQS = 360°
Subtract the sum of the interior angles from 360° for ∠ RQS
∠ RQS = 360° - (90 + 90 + 42)° = 360° - 222° = 138°
Can someone Please Help meh
Answer: the one for 3b (8) + (-2)(7c) ; for b= 2, c= 3 is
6
Step-by-step explanation:
3b(8)+(-2)(7c)
3(2)(8)+(-2)(7)(3)
(6)(8)+(-14)(3)
48-42
6
8. Solve the equation below.
(2x – 5)2 = 25
x = 8 and x = -4
x = 5 and x = 0
x = 4 and x = 2
x = 5 and x = 3
Answer:
x=5 and x=0
Step-by-step explanation:
Unit 4 Mid Unit Assessment
2.
1. A scale drawing of a picture frame is 6
inches long and 4 inches wide. If the
scale is 1 inch: 3.5 feet, what is the
length and width of the actual picture
frame?
Answer:
20
Step-by-step explanation:
45 points!!!!!!!!!
In AIJK, the measure of ZK=90°, KI = 5.3 feet, and JK = 2.1 feet. Find the measure of
ZI to the nearest tenth of a degree.
Answer:
< i = 21.6 degrees
Step-by-step explanation:
Side KI = 5.3 ft
Side JK = 2.1 ft
To find : = ?
Answer:
22°Step-by-step explanation:
to get the value of angle I, use the formula: x tan⁻¹Ф = h
where: x = 5.3
h = 2.1
Ф = ?
plugin values into the formula;
5.3 tan⁻¹Ф = 2.1
tan⁻¹Ф = 2.1
5.3
≈ 22°
What is the value of x in the equation below?
One-third (12 x minus 24) = 16
A. 2
B. 6
C. 8
D. 10
Answer:
6
Step-by-step explanation:
B, You have to break it down and you'll get your answer
Answer:
Hello So i can try lets get started!
---------------------------------------------------
So the equation is 1/3(12x - 24)=16
The answer would be x = 6
Step-by-step explanation:
Have a blessed day!!!
Zahra runs a 500-meter race at a constant speed. Which graph shows her distance from the finish line during the race?
Answer: The answer is the third figure. Attached the image.
Step-by-step explanation: Given that Zahra runs a 500-meter race at a constant speed. We are to select the correct graph from the four options that will show her distance from the finish line during the race.
We can see in graph 2, the distance covered by Zahra in metres increases at the same rate as the time increases in minutes.
But, since we are considering from the finish line, so option (#) will be right, because Zahra starts at 500 metres, decreases in the same manner as the increase of time and goes down to 0 on the positive X-axis.
Also,
Thus, the attached graph, which is the third option is the correct graph.
Evaluate the expression when a= 2 and c=-4.
-a +5c
0.25(x +4) -3 = 28
What is the value of x?
Answer:
120
Step-by-step explanation:
0.25=1/4
1/4(x+4)-3=28 /times 4
1(x+4)-12=112
x+4-12=112
x-8=112
x=120
The value of x for the given expression will be equal to 120.
What is an expression?The mathematical expression combines numerical variables and operations denoted by addition, subtraction, multiplication, and division signs.
Mathematical symbols can be used to represent numbers (constants), variables, operations, functions, brackets, punctuation, and grouping. They can also denote the logical syntax's operation order and other properties.
Given expression is 0.25(x +4) -3 = 28.
Conver the value 0.25 into fractions,
0.25=1/4
Apply the mathematical operations to get the value of x below,
1(x+4)-12=112
x+4-12=112
x-8=112
x=120
Therefore, the value of x for the given expression will be equal to 120.
To know more about an expression follow
https://brainly.com/question/25968875
#SPJ2
Please help!
Assume that you remove all of the hearts from a normal deck of cards. Now, with this new hearts-only deck, how many possible five-card hands can you draw? (A normal deck of cards has 52 cards, 4 suits, and numbers 2-10, Jack, Queen, King, Ace.)
a. 4,669,920
b. 311,875,200
c. 154,440
d. 6,497,400
Answer:
c
Step-by-step explanation:
The possible way to draw 5 cards hand from set of hearts-only deck is 15,4440 .
What is permutation?Permutations are different ways of arranging objects in a definite order. It can also be expressed as the rearrangement of items in a linear order of an already ordered set. The symbol [tex]P_{r} ^{n}[/tex] is used to denote the number of permutations of n distinct objects, taken r at a time.
Formula of permutation
[tex]P_{r} ^{n}[/tex] = [tex]\frac{(n!)}{(n-r)!}[/tex]
According to the question
Remove all of the hearts from a normal deck of cards.
i.e,
Total normal deck of cards = 52
On Removing hearts cards(n) = 13
Now, with this new hearts-only deck, how many possible five-card hands can you draw .
Card to draw (r)= 5
Applying formula of permutation
[tex]P_{r} ^{n}[/tex] = [tex]\frac{(n!)}{(n-r)!}[/tex]
n = 13
r = 5
Substituting the values
[tex]P_{r} ^{n}[/tex] = [tex]\frac{(13!)}{(13-5)!}[/tex]
[tex]P_{r} ^{n}[/tex] = [tex]\frac{(13*12*11*10*9*8!)}{(8)!}[/tex]
[tex]P_{r} ^{n}[/tex] = 15,4440
Hence, the possible way to draw 5 cards hand from set of hearts-only deck is 15,4440 .
To know more about permutation here:
https://brainly.com/question/1216161
#SPJ2
Solve for x: 6x−8y=12
x=2+3/4y
x=1/2+3/4y
x=1/2+4/3y
Answer:
[tex]x=2 + \frac{4y}{3}[/tex]
Step-by-step explanation:
can i please have brainliest?
Jose wants to pay off his credit card balances within 18 months. He is trying to decide if he should use his $1,750 in
savings to pay off part of the balances or if he should transfer the balances to a new card with a low introductory
rate. The new credit card has an introductory rate of 8% but charges a balance transfer fee of $60 for each balance
transfer. Jose decides to pay off Credit Card B using his savings and then transfer the balance of Card A to the new
card. Which of the following options shows the amount of Jose's new monthly payment?
Credit Card A: $1,154
Credit Card B $1,469
a
b
$90.43
$68.25
$71 80
$75.34
С
d
Please select the best answer from the choices provided.
Mark this and return
Save and Exit
Nex
Submit
Answer:
c.$71.80
Step-by-step explanation:
did the debt management quiz
Plzzzzzzzzz help me out fast
Answer:
b
Step-by-step explanation:
Answer: 2
Step-by-step explanation:
which expression is equivalent to 3-6x?
Answer:
Step-by-step explanation:
3-6x should be the same as -6x+3
