the answer is C = 59.7 metres
Debra and Alexandria can finish a plowing job in two hours if they work together. Debra can do the job in 7 hours by herself. How long would it take Alexandria to finish the same job alone?
Answer:
2 hours 48 minutes
Step-by-step explanation:
Debra=1 plowing job / 7 hours
Debra+Alexandra=1 plowing job / 2 hours
1/2-1/7
=7/14-2/14
=5/14
=1/14/5 (Alexandra can do 1 unit of plowing job per 14/5 hours)
14/5 hour=2 hours 48 minutes (hope hits helps)
Alexandria to finish the same job alone in, 2 hours 48 minutes
What is mean by Subtraction?Subtraction in mathematics means that is taking something away from a group or number of objects. When you subtract, what is left in the group becomes less.
Given that;
Debra and Alexandria can finish a plowing job in two hours if they work together.
And, Debra can do the job in 7 hours by herself.
Hence, We get;
For Debra = 1 plowing job / 7 hours
Debra + Alexandra = 1 plowing job / 2 hours
Hence, Time to take Alexandria to finish the same job alone is,
= 1/2 - 1/7
= 7/14 - 2/14
= 5/14
= 1/14/5 (Alexandra can do 1 unit of plowing job per 14/5 hours)
= 2 hours 48 minutes
Thus, Alexandria to finish the same job alone in, 2 hours 48 minutes
Learn more about the subtraction visit:
https://brainly.com/question/17301989
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Sydney read 50 5050 pages in 40 4040 minutes. She reads at a constant rate. How many pages can Sydney read per minute?
Answer:
1.25 or [tex]1\frac{1}{4}[/tex] pages per minute
Step-by-step explanation:
We are to determine the speed at which Sydney reads
Speed = total pages red / total minutes
50 / 40
The above fraction can be expressed its simplest form by dividing the numerator and the denominator by 10
5 / 4
the above fraction can be expressed as a mixed fraction as [tex]1\frac{1}{4}[/tex] or as a decimal as 1.25 pages per minute
Answer:
Step-by-step explanation:
Determine whether the conclusion is valid. Explain.
You want to determine the number of students in your school who have visited a science museum. You survey 50 students at random. Twenty have visited a science museum, and thirty have not. So, you conclude that 40% of the students in your school have visited a science museum.
A. yes; The sample is representative of the population, selected at random, and large enough to provide accurate data. So, the sample is unbiased and the conclusion is valid.
B. yes; The sample is representative of a specific group, selected based on age, and small enough to provide accurate data. So, the sample is biased and the conclusion is valid.
C. no; The sample is not representative of the population because students who are older have had more opportunities to visit a science museum. So, the sample is biased and the conclusion is not valid.
D. no; The sample is representative of the population, selected at random, and too large. So, the sample is unbiased and the conclusion is not valid
Answer:
e
Step-by-step explanation:
e
A dog is leashed to a tree with a 20 ft rope. If the dog runs around the tree one time, how far has he run?
Answer:
40pi ft or 125.66 ft
Step-by-step explanation:
ILL GIVE BRAINLIEST PLEASE HELP ASAP
Answer:
4.4
Step-by-step explanation:
(-7/10 + 0.15) ÷ (-0.125)
(-70/100 + 15/100) ÷ (-0.125)
-55/100/-0.125
-.55/-0.125
4.4
Tom is 12 1/2 years old and Jeff is 13 3/4 years old.how much older is Jeff than Tom?
Answer:
1 1/4 years
Step-by-step explanation:
Answer:
1¹/4
Step-by-step explanation:
Jeff would be 1 1/4 older than Tom
Will mark brainliest- please help! find x
Answer:
15
Step-by-step explanation:
Assuming x is the length DB
Δ DSR and Δ DBC are similar, so ratios of corresponding sides are equal, that is
[tex]\frac{DB}{DS}[/tex] = [tex]\frac{DC}{DR}[/tex] , substitute values
[tex]\frac{DB}{10}[/tex] = [tex]\frac{12}{8}[/tex] ( cross- multiply )
8 DB = 120 ( divide both sides by 8 )
DB = 15
That is x = DB = 15
Find the value of in the triangle shown below.
2.5
2
6.5
I have attached the complete question with the triangle.
Answer:
x = 6
Step-by-step explanation:
From the image attached we are told to find x in the triangle.
The triangle is a right angle triangle and so we can use pythagoras theorem to find x.
x² = 6.5² - 2.5²
x² = 42.25 - 6.25
x = √36
x = 6
Two sides of a triangle have lengths 7 and 15. Which inequality represents the possible lengths for the third side , x?
Answer:
8 < x <22
Step-by-step explanation:
In this question we know the two sides of the triangle to be 7 and 15, let's all the other side x
One one side of the inequality we have:
7+15>x
22 > x
On the other side we have
7 + x > 15
X > 15-7
X>8
When we rearrange these inequalities above we have
8<X<22
We saw from the calculations that 8 is less than X and X is less than 22.
Find x and TU
Show all the work
Answer:
x = 10
TU = 24
Step-by-step explanation:
To find the value of x, we use the trapezoid mid-segment theorem
The sum of the lengths of the two parallel sides is equal to twice the length of the mid segment
Mathematically, we have this as;
2(2x+ 4) = 2x-4 + 3x + 2
4x + 8 = 5x - 2
5x -4x = 8 + 2
x = 10
TU = 2x + 4 ; = 2(10) + 4 = 20 + 4 = 24
Please help me I will give brainliest
Answer:
Hm?
Step-by-step explanation:
Why should i
Select each statement that 9.81 will make true.
12.47 – ⬜ = 2.66
12.47 + ⬜ = 2.66
14.08 – ⬜ = 4.17
3.67 + ⬜ = 13.48
11.43 – ⬜ = 2.96
PLEASE HELP!!
Sunita creates a scale model of an Aeroplan. The scale of the model is 5cm to 9cm. Sunita's model has a wingspan of 36cm. What is the wingspan of the rea Aeroplan.
Step-by-step explanation:
Given
Model to Actual = 5:9
5cm in Model = 9cm actual
1cm in model = (9/5)cm = 1.8cm
36cm in model = 1.8cm x 36 = 64.8cm
Can someone plz help me this is due im a few hours. And plz answer a) & b) plz
Answer:
a. 840 gals
b. 14 miles per gallon
Step-by-step explanation:
a. 350 ÷ 25 = 14
14 · 60 = 840 gallons
b. 350 ÷ 25 = 14 miles per hour
help me answer i give brainiest Solve for x.
5=2x−3
Enter your answer in the box.
Answer:
5 - 3 = 2
2x =2
x = 2x ÷ 2 = 1
Answer is 1
Answer:
5=2x-3
collect like terms
if -3 crosses the equal to sign it will change to +3
5+3=2x
8=2x
divide both sides by 2
X=4
Help me please please please
The slope is 0.6
The answer is taken by solving from the graph
5x + (x + 6) + 3x whats the answer?
first to answer CORRECTLY gets brainliest
Answer:
9x + 6
Step-by-step explanation:
5x + ( x + 6 ) + 3x
= 5x + 3x + x + 6
= 9x + 6
Baker ate 3 4 pound of fried shrimp. Jadarius are three times as much as Baker, and Darrick ate 20 ounces of fried shrimp. How many total ounces of fried shrimp did they eat altogether?
Answer:
2196 ounces or 137.25 pounds
Step-by-step explanation:
baker eats = 34 pounds
jadarius eats = 34 x 3
= 102 pounds
darrick eats = 20 ounces
so total number will be 2196 ounces or 137.25 pounds.
hope it helps
mark me brainlist pls
PLSS HELP WITH THIS IMMEDIATELY!!!! only answer if u know. i’ll be giving brainiest if u don’t leave a link.
one more help How can you figure out the length of the dotted line that connects the two endpoints of the half circle?
Answer: Multiply the radius of the half circle by 2.
Step-by-step explanation: The dotted line that connects the two endpoints of the half circle is the diameter of the circle. To find the diameter of the circle, you will need to multiply the radius of the half circle by 2, since the radius is half of the diameter.
Rico spins the spinner twice and determines the sums of the spins. Fill in the sample space to determine the possible outcomes. What is the probability that Rico will get a sum less than or equal to 8? A 13\frac{1}{3} 3 1 B 23\frac{2}{3} 3 2 C 89\frac{8}{9} 9 8 D 59\frac{5}{9} 9 5
Answer:
2/3
Step-by-step explanation:
Sample space for the sum of 2 spins :
Number on spinner = 2, 5, 4
____ 2 ___ 5 _____4
2___ 4 ___ 7 _____ 6
|
5___ 7 ___ 10 ____ 9
|
4___ 6 ___ 9 ____ 8
Hence,
(4, 7, 6, 7, 10, 9, 6, 9, 8)
Probability of getting a sum less than or equal to 8;
Probability = required outcome / Total possible outcomes
Required outcome =, sum ≤ 8 = 6
Total possible outcomes = 9
P(sum ≤ 8) = 6/9 = 2/3
Find x and y
Show all the work
Answer:
x = 16
y = 116
Step-by-step explanation:
Given is a figure of isosceles trapezoid. One pair of opposite sides are parallel and non-parallel sides acts as it's transversals.
Therefore,
4x° + (6x + 20)° = 180° ( interior angles on the same side of transversal)
(6x + 20 + 4x)° = 180°
(10x + 20)° = 180°
10x + 20 = 180
10x = 180 - 20
10x = 160
x = 160/10
x = 16
Measure of base angles of an isosceles trapezoid are equal.
Therefore,
y° = (6x + 20)°
y = 6x + 20
y = 6*16 + 20
y = 96 + 20
y = 116
two hours later than 11:30 is?
Sally's age is 2 plus 3 times John's age. Together, Sally and John's age equals 30. How old is Sally?
Answer:
Sally is 23 years old.
Step-by-step explanation:
John's age is completely unknown, so it is known as x
Meanwhile, Sally's age can be represented as 3x+2
The sum of both ages is 30.
So, x+3x+2=30
Combine like terms.
4x+2=30
Subtract 2 from both sides.
4x=28
Divide both sides by 4.
x=7
John is 7 years old.
Sally's age: 3(7)+2=23
Sally is 23 years old.
A cylinder with radius 3 feet and height 5 feet is there. What is the volume of the cylinder? Round answer to the nearest hundredth.
Answer:
volume of cylinder
= πr²h
= π×3²×5
= π×9×5
=45π
= 141.37 cubic feet
what is the slope of a line parallel to the line whose equation is y= -5/2x+7. fully simplify your answer
Answer:
-5/2
Step-by-step explanation:
7=intersect of y
-5/2=Slope
I need help with letter A
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer: 14
Explanation:
6 x 2 = 12
1 x 2 = 2
12 + 2 = 14
I hope this helped!
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- Zack Slocum
*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆*――*☆**☆*――*☆*――*☆*――*☆
Answer:
14
Step-by-step explanation:
6*3-2(2*1)
=18-4=14
What is 42x39 long Muliply
Answer:
1638
Step-by-step explanation:
Can someone plz help me with this one problem plz!!!
A table is shown below.
x y
1 – 3
1 2
1 6
Does the relationship shown represent a function? Why or why not?
Answer:
No, because x has multiple values for y.
Step-by-step explanation:
Any input into a function has to map into exactly one output. The input, x, has multiple values for y. Therefore, it is not a function.