Ratio And Proportion
If 8 engines consume 12000 kgs. of coal when each running 10
hours per day, how much coal is required for 7 engines out
which 5 are running 12 hours a day and the rest 6 hours a day?
Answer:
11200 for 7 engines for a total of 80 hours
Step-by-step explanation:
You have 8 engines burning 12000 .for 10 hours.
Divide 10 hours into 12000=1200 PER hour.
1200 ÷8 engines = 140 per hour per engine.
140 × # of hours (12)=1680 for 12 hours per engine.
# of engines × 1680 for 12 hour/per engine
5×1680 = 8400 of fuel for 12 hours/5 engine
Then you have 2 that runs 10 hours
2 × 140 per hour per engine =280 × 10 =2800 for 2 engines for 10 hours
8400. + 2800= 11200 of fuel for 6 engines
a bag contains 4 blue and 6 green marbles. two marbles are selected at a random from the bag. if the first marble is not replaced before the second marble is drawn
Answer:
4 ÷ 10
Step-by-step explanation:
The computation of P is shown below:
If we add two marbles i.e.
= 4 + 6
= 10 marbles
Now if we draw the second marble
P(blue) = Blue marbles ÷ total marbles
= 4 ÷ 10
In the other case
P( blue second given a green first) = 4 ÷ 10
Please please help me will give Brain
Answer:
b
Step-by-step explanation:
ADC= CBA
Answer:
choice 4) angle ACD congruent to angle CAB
What is the coefficient of f in the expression 4b-f
A.–1
B.0
C.1
D.4
Answer:
C
Step-by-step explanation:
C, because if you just have a random variable like x,y,z there's always an imaginary 1 in front of them.
need help with this question
Can someone help me with this?
Answer:
True
Step-by-step explanation:
it is 3/5. Than 6/10 is equal to 3/5. Than 9/15 is equal to 3/5.
Answer: True
Step-by-step explanation:
That is true because let's take the first point for example.
3 cups of almonds for 5 cups of oats.
3/5 of 5 is 3
So that's correct.
If you still aren't sure you should try that with a different point. Hmm how about :
9 cups of almonds for 15 cups of oats
3/5 of 15 = 45/5 = 9
That's correct as well.
Hope these helps!
PLEASE HEEEELPPPP ASAP
Answer:
The solution of the first image is: b = √48
The solution of the second image is: c = √125
Step-by-step explanation:
Here we have two triangle rectangles, first, we need to remember the Pythagorean theorem.
For a triangle rectangle with cathetus A and B, and a hypotenuse H, we have the relationship:
A^2 + B^2 = H^2
Where H is the side that is opposite to the right angle (the angle of 90°)
In the first image, we can see that the hypotenuse is equal to 8, and one cathetus is equal to 4.
We want to find the value of b, that is the other cathetus.
Then we have:
4^2 + b^2 = 8^2
b^2 = 8^2 - 4^2
b^2 = 48
b = √48
Second image:
in this case, c is the hypotenuse, a and b are the cathetus.
We know that:
a = 5, b = 10
Then we have the equation:
a^2 + b^2 = c^2
Now we can replace the above values:
5^2 + 10^2 = c^2
25 + 100 = c^2
125 = c^2
√125 = c
HELP! What is the value of x? (Picture)
Answer:
c. 45
Step-by-step explanation:
Answer:
40
Step-by-step explanation:
90 degree angle - the 10 degrees = 80
divide by 2 because 2x=80 and get 40
Why can you take the cube root of a negative number?
Answer:
you can because the real cube root of any negative real number is negative.
Step-by-step explanation:
Answer: The reason that we can't have the square (or quartic) root of a negative number is that two negatives always cancel to give a plus; so the square root of a negative number is undefined. ... The Real cube root of any negative Real number is negative.bc. a negativ number multiplied by it self 3 time result negativ too
hope this helps ❤️
Step-by-step explanation:
need help with this problem on my hw
Answer:
157
Step-by-step explanation:
C = [tex]\pi[/tex] x diameter.
C = 3.14 x 50
C = 157 units
Can anybody help with these? It’s trigonometry
Answer:
1 is 17
Step-by-step explanation:
2 is 15. Mark me BRAINLISTESLD
what is a-5/245
Don't hate but be truthful do this boy look good ra-te him plz and rate the other guy to no homo
Answer:
Trippin trippin
Step-by-step explanation:
Like frfr Trippin trippin
I WILL MARK BRAINLIEST
11. (06.05 )
The two-way table shows the number of students in a school who like mathematics and/or physics.
Do Not Like Mathematics
Total
Like Mathematics
Like
Physics
15
20
35
Do Not
Like
Physics
5
25
30
Total
20
45
65
How many more students like physics than mathematics? (5 points)
10
15
20
Answer:
15
Step-by-step explanation:
The base of a rectangular tank measures 50 cm by 40 cm. What will the height of the water level be when it contains 9 liters of water (1 liter = 1000 cm3).
Answer:
height = 4.5 cm
Step-by-step explanation:
9 liters = 9000 cm^3
(50x40xH) = 9000
H = 4.5 cm
6.
Eight coins are all dimes or nickels,
totalling 65 cents. How many are
there of each?
Answer:
3 nickels and 5 dimes
Step-by-step explanation:
3 nickels = 15 cents
5 dimes = 50 cents
50 + 15 = 65 cents
Answer:
5 dimes and 3 nickels
Step-by-step explanation:
5 times 10 is 50
3 times 5 is 15
15 plus 50 is 65
Help I am in fourth :(
Answer:
7.6= 76 x 10 to the power of 1
760= 76 x 10 to the power of 1
7600= 76 x 10 to the power of 2
Step-by-step explanation:
Factorise:
3x^2-2x-5
Answer:
( 3[tex]x[/tex] - 5 ) ( [tex]x[/tex] + 1 )
Step-by-step explanation:
[tex]3x^{2}[/tex] - 2[tex]x[/tex] - 5
(Multiply 3 from [tex]3x^{2}[/tex] with -5)
Product = -15
Sum = -2
(3 times - 5 gives the product '-15' and 3 plus -5 gives the sum -2)
[tex]3x^{2}[/tex] + 3[tex]x[/tex] - 5
3[tex]x[/tex] ( [tex]x[/tex] + 1 ) - 5 ( [tex]x[/tex] + 1 )
= ( 3[tex]x[/tex] - 5 ) ( [tex]x[/tex] + 1 )
Find the distance between ( 1, 3) and (5, 6)
Answer:
Step-by-step explanation:
1, 3
5, 6
subtract
4 x
3 y
4^2 + 3^2 = 5^2
so the distance is 5 units
please help me answer this question!!!!!
Answer:
h = 13ft
Step-by-step explanation:
We can assume that the triangles are similar, so:
5 ft is to 26 ft as 2.5 ft is to h ft.
Which can be set up like this:
[tex]\frac{5}{2.5}=\frac{26}{h}[/tex]
We can cross multiply:
5h = (2.5) (26)
5h = 65
h = 13ft
Someone plz help me giving brainliest!!
Answer:
9/16 square yd
Step-by-step explanation:
Answer:
it would be three yards for the area
Step-by-step explanation:
when i first saw this i thought it said elmo
Can someone help ASAP
Simplify 4x4
Answer:
16
Step-by-step explanation:
HELP MEEEEEE!!!!!!
The steelers won twice as many games as they lost. they played 33 games. how many games did they win?
Rebecca has a fair spinner with six sides.
They are labelled orange, orange, white, pink, white, orange.
Choose the word that best describes the likelihood that the spinner will land on pink.
impossible
unlikely
evens
likely
certain
Answer:
unlikely
Step-by-step explanation:
unlikely because 3/6 colours are orange and 2/6 is white so the remaining 1/6 is not possible as much as the other 2
PLS HELP
At the end of the season, 4 basketball teams in a league are having a pizza party at a restaurant.
Team Number of People
Sharks 17
Wolves 21
Tigers 20
Hawks 17
Coaches 9
The restaurant manager suggests that they order one pizza for every 6 people. How many pizzas
should they order?
Write the equation of a line with a slope of 3 and a y-intercept of 0
Answer:
y = 3x
Step-by-step explanation:
4/5(p+1)=1 wgat equals p
Answer:
p= 1/4 or 0.25
Step-by-step explanation:
Answer:
p = 1/4 or .25
Step-by-step explanation:
We first multiply by the reciprocal of fraction to move to the other side.
[tex]p + 1 = \frac{5}{4} [/tex]
Reduce
p = 1/4
NEED HELP ASAP! 15 POINTS!
Students took a survey to determine their end of year field trip. The results showed that 120 students wanted to go to an amusement park. This number represents 40% of the students who took the survey. What was the total number of students who took the survey?
---
1. 160
2. 250
3. 300
4. 310
---
Answer:
300
Step-by-step explanation:
120 is 40%
40% plus 40$ = 120+120=240
20% left.
120/2=60
240+60=300
300=answer
An isosceles triangle has base 56 mm and
perpendicular height 45 mm
45 mm .
Work out the perimeter of the large triangle.
THE BASE OF THE LARGE TRIANGLE IS 168 Give your answer in mm.
Your final line should say, perimeter = ... m
Answer:
Step-by-step explanation:
Draw the altitude from the vertex angle to the base. You have two congruent, right triangles. The hypotenuse of each triangle is
√[(56/2)²+45²] = √[28²+45²] = √2809 = 53 mm
perimeter of larger triangle = 2×53 + 56 = 162 mm
The length of a rectangle is 3 yd longer than its width.
If the perimeter of the rectangle is 30 yd , find its area.
You had $24 to spend on three notebooks. After buying them you had $12. How much did each notebook cost?
(also show how you found out the answer))
Answer:
Each notebook would cost around $4
Step-by-step explanation:
24-12=12
seeing how you spent $12 on buying 3 books you'd divide
12÷3=4
meaning each book would cost around $4
Answer:
Each notebook cost $
Step-by-step explanation:
Hi :)
If the three books in total cost $12, then that means she had $12 leftover.
The equation:
3x + 12 = 24
-12 on both sides
3x = 12
divide by three on both sides
x = 4
hope this helps :)