Answer:
it would take him 1.5 hours (an hour and 30min.)
Step-by-step explanation:
120 divided by 8 = 15
15 divided by 10 = 1.5
The number of hours he would need to complete this job is 2.5 hours.
What is PEDMAS rule?"PEDMAS is an order of operation used in mathematics to deal easily with complex calculations. It states that we start solving any arithmetic expression by solving the terms written in parentheses or brackets and then we simplify exponential terms and move ahead to division and multiplication operations and then, at last, we can find the answer by solving addition and subtraction operations."
According to the question
A construction worker needs to move 120 feet squared (3) of dirt by using a wheelbarrow.
One wheelbarrow load holds 8 feet squared(3) of dirt and each load takes him 10 minutes to complete.
Writing the above statement in mathematical form
= (120 ÷ 8) × 10
By using PEDMAS rule, we get
= 15 × 10
= 150 mins
= 150 ÷ 60
= 2.5 hours
Thus, the number of hours he would need to complete this job is 2.5 hours.
Learn more about PEDMAS rule here
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What is the equation of a line that is perpendicular to this line and goes through the
given point?
y = 3x + 2 (3,-4)
Answer:
x + 3y + 9 = 0
Step-by-step explanation:
y=3x + 2
Coefficient of x = 3
Gradient (m) of line y= 3x + 2 is 3
Since the line passing through point
(3,-4) is perpendicular to line y=3x + 2
hence gradient (m) of the line is -1/3;
And hence it equation is given as;
y - y1 = m(x - x1)
y - (-4) = -1/3(x - 3)
multiplying through by 3;
3 × y + 3 × 4 = 3 × -1/3(x - 3)
3y + 12 = -1(x - 3)
3y + 12 = -x + 3
x + 3y + 12 - 3 = 0
x + 3y + 9 = 0
2. Add 62 to the difference of
90 and 36.
Answer:
116
Step-by-step explanation:
(difference = subtract)
90 - 36 = 54
adding 62 to 54 = 116
answer
62+(90-36)
62+54
116
(WILL GIVE BRAINLIEST)
What is 3/5 written as a percent?
A. 6%
B. 30%
C. 60%
D. 167%
Answer:
60%
Step-by-step explanation:
1/5 equals 20 % and thus 3/5 is 20 % multiplied by 3 so 60 %
Answer: "Percent" or "%" means "out of 100" or "per 100", Therefore x% can be written as
x/100
.
We can then rewrite this as: 60%.
create an equation from the model that describes the relationship between the weights on each side of the scale into the correct answer in the Box
Answer:
2y+3=4y+2
Step-by-step explanation:
Answer:
2y+3=4y+2
Step-by-step explanation:
cause i got it right
A government might try to reduce unemployment in order to:
A. Allow businesses to invest money more freely.
B. set limits on its own economic growth.
C. keep inflation from rising too quickly
D. make sure its people can find jobs
If you get it correct will give brainly
Answer:
Make sure people can find jobs
Step-by-step explanation:
Answer: D, Make sure it’s people can Find job’s.
Step-by-step explanation: it’s the Answer I just did the quiz.
A company requires a password to access a data storage vault. The password must be 4 characters long and may
contain digits and lowercase letters only.
How many passwords are possible if characters can be repeated? Enter your answer as a number, like this: 425
Answer:
There are 36 possibilities per character (26 lower case letters + 10 numbers), so the total number of permutations are 36^4 = 1,679,616
Step-by-step explanation:
what is 8,526 divide by 9
Answer:
Use a calculator but otherwise it is 947.3333
Step-by-step explanation:
first 8000 divided by nine which is 888.8888
second is 500 wich is 55.5555
third is 20 divided by nine wich is 2.2222222
fourth is 6 divided by nine wich is 0.66666667
fith add all of them which is around 947.3333
In New York the temperature was -4 Fahrenheit in the morning if the temperature dropped eight Fahrenheit what is the temperature now
Answer:
-12 Fahrenheit.
Step-by-step explanation:
Five pounds is equal to 2.268 kilograms. How many kilograms is 2 pounds?
0.4536
0.9072
1.8144
4.536
Answer:
B) 0.9072
Step-by-step explanation:
Which of the following equations can be used to model the number of meals someone will eat over a period of time if they eat three meals a day?
Answer:
1
Step-by-step explanation:
Answer:
3t + 5 = 32
and
3t+ 2 = 20
Step-by-step explanation:
i got it right :)
mr.little earned $320 for working 2 eight hours shifts at the lumber yard .what is his hourly wage?
Answer:
Step-by-step explanation:
320$ divided by 16 (two 8 hr shifts) = 20 dollars an hour
what is the measure of an angle that is linear pair with 10 degrees
Answer:
170 degree bcause 180 -10 = 170 ( linear pair )
Answer:
170 degree bcause 180 -10 = 170 ( linear pair )
Step-by-step explanation:
Two numbers, both greater than 23, have HCF 23 and LCM 644. The sum of the numbers is:
Answer: 253
Step-by-step explanation:
First, we have two numbers A and B.
We know that all numbers can be written as a product of prime numbers.
And the HCF of A and B is 23
Then we can write:
A = 23*a
B = 23*b
(remember that 23 is a prime number)
Where a and b are larger than 1.
Now we know that the least common multiple between them is 644.
Notice that the primes that conform a can not be the same as the ones for b, because in that case, the HCF would not be 23.
Now to find a and b we can compute:
644/23 = 28.
28 = a*b
Now let's write 28 as a product of prime numbers:
a*b = 28 = 4*7 = 2*2*7
Then we can define:
a = 2*2
b = 7.
Our two numbers are:
A = 23*2*2 = 92
B = 23*7 = 161
A + B = 92 + 161 = 253
The sum of the two numbers would be:
253
Assume the two numbers be [tex]x[/tex] and [tex]y[/tex]
Given that,
HCF of [tex]x[/tex] and [tex]y[/tex] = 23
so,
The numbers could be written as:
23[tex]x[/tex] and 23[tex]y[/tex]
We know that,
LCM of 23[tex]x[/tex] and 23[tex]y[/tex] = 644
We also know that,
LCM × HCF = The product of two numbers
∵ 644 × 23 = 23[tex]x[/tex] × 23[tex]y[/tex]
So, by solving them we get;
14812/529 = [tex]x[/tex] × [tex]y[/tex]
∵ [tex]x[/tex] × [tex]y[/tex] = 28
If we prime factorize 28, we get
28 = 2 × 2 × 7
This gives us,
[tex]x =[/tex]23 × 2 × 2 = 92
[tex]y =[/tex] 23 × 7 = 161
Thus, the sum of the two numbers = 92 + 161 = 253
Learn more about "HCF" here:
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- Fifteen percent of what number is 66?
Answer:
440
Step-by-step explanation:
In other words, you know that 15 percent of a number is 66 and you want to know what that initial number is. Therefore, you can derive that 15 percent of 440 equals 66. 67 is 15 percent of what number?
how many fifths are there in 8 3/5?
Answer:
43 becuase 8 3/5 times 5
Step-by-step explanation:
Alright, I need help!
Answer:side B middle length!
Step-by-step explanation:
(100 POINTS) Write the particular equation of this transformed cosine graph. (Hint: Try to find the best point to center the sinusoidal axis.)
Answer:
y= - 3cosx - 2
Step-by-step explanation:
Our max here is at 1, and the minimum is at - 5
The distance between the x-axis and these points are 1 and 5. 5 + 1/2 = 6/2 = 3, our amplitude. But let's double check. Our middle point is - 2 so...
- 5 - (- 2) = - 5 + 2 = - 3
The amplitude is rather - 3.
f(x) = Acos(Bx + C) + D
Using this we know B = 0, D = - 2 (the middle point), C = 0, and A = - 3 (amplitude). B = 0, and C = 0, as there is no horizontal/vertical shift
f(x) = Acos(Bx + C) + D
f(x) = - 3cosx + (- 2)
f(x) = - 3cosx - 2
Answer:
y= - 3cosx - 2
Step-by-step explanation:
Just Answered on A P E X Practice Assignment
Write the inequality.
A number k plus 5 is greater than or equal to
8.
Ak +5> 8
k+5 <8
k+5 <8
k+528
Find the perimeter and area of a rectangle of cardboard measuring 15.9 cm by 11.7cm
Help. What is the slope of the line in the graph?
Hello,
As you have not provided the graph, I can teach you how to answer the question.
You are solving for the slope of the line. The slope can be found by using the following equation:
slope (signified by the variable m) = [tex]\frac{y_2 - y_1}{x_2 - x_1}[/tex]
Note that the numbers does not exactly matter, only that what you set as variable [tex]x_1[/tex], the y inside that coordinate will also be [tex]y_1[/tex], and likewise for point 2.
For example, let us say your points for your line is (3 , 6) and (10 , 4)
Let:
[tex](x_1 , y_1)[/tex] [tex]= ( 3 , 6)[/tex]
[tex](x_2 , y_2) = (10 , 4)[/tex]
Plug in the corresponding numbers to the corresponding variables:
slope [tex]m = \frac{4 - 6}{10 - 3} = - \frac{2}{7}[/tex]
The given points will result in a [tex]-\frac{2 }{7}[/tex] slope.
Hope this helps!
y = 7x^3 - 4x^2 + 3x - 12
find the domain step plz
Answer:
The domain is -oo < x < oo or (-oo,oo)
Step-by-step explanation:
Sometimes it helps if you draw this out on a number line or graph the equation! :)
Domain is how far x goes. As in this case x is infinite both ways.
HELP ASAP!!!WILL GIVE BRANLIST
Answer:
See photo below
I hope this helps!
Answer:
you see the top u take a line and put it right through the 2 top coners and put a line there.
Step-by-step explanation:
Complete the statements.
8.703 dekagrams =_____
kilograms
100.3
_____= 10.03 hectometers
909.9
_____= 90,990 centiliters
Step-by-step explanation:
1. 0.08703 killograms
2. Decameters
3. Liters
Answer:1. 0.08703 killograms
2. Decameters
3. Liters
Step-by-step explanation:
Which of the following is a situation in which a quadratic equation cannot be
solved using the quadratic formula?
Answer:
the a
Step-by-step explanation:
zzzzz
3. If (5,5) is the endpoint of a line with the midpoint at (0,0), where is the
other endpoint?
WILL GIVE BRAINLYIST
A-5 pound bag of apples cost $3.50 use the way completed table to identify equivalent ratios and then answer the questions.
Apples *? 5 ? 15
Cost 0.70 3. 50 7 ?
Apples cost $___ per pound.
i think the answer is 11.024
Will give brainliest and thanks and please explain
Answer:
(65-5) / 2.5 = d
Step-by-step explanation:
100% sure
Answer:
d=65/2-5
26days
Step-by-step explanation:
I WILL GIVE BRAINLIEST HELPPP
1. 3/10 = 12/50 true or false
2. 1/2=6/12 true or false
3.5/6=10/12 true or false
4.5/7=15/21 True or false
5.3/8=6/15 true or false
PLeASE HELP
Answer:
1. False
2. True
3. True
4. True
5. False
Step-by-step explanation:
Answer:
Step-by-step explanation:
1. False 3/10 x 5 = 15/50 not 12/50
2. True 1/2 x 2 = 6/12
3. True 5/6 x 2 = 10/12
4. True 5/7 x 3 = 15/21
5. False 3/8 x 2 = 6/16 not 6/15
Which equation represents a line with a slope of zero?
O y= 2x
O y=-3x+
O y=4
O x=-5
Answer:
y = 4
Step-by-step explanation:
In y =mx+b (slope -intercept form ),
We have m to be the slope
The first and the second equations contains the slope (coefficient of x)
The fourth option clearly states the slope is -5
That leaves with the third option with only a y-intercept.
Answer:
y=4
Step-by-step explanation:
y=4 on the graph would look like this -------------------------- and it would have a slope of zero. It's not x = -5 because that would have an undefined slope |.
And the first two the slope is the number in front of the x.
Hope this helped!!!
If Kim reduces the weekly number of hours she works by one-fourth and her current weekly income is $520.00, what is her new weekly income?
Answer:
$390 you divide 520 by 4 so 520/4=130 now we subtract 130 from 520, 520-130=390
Step-by-step explanation:
Solving this question requires basic arithmetic formula and fractions.
New weekly income = $390
Let's call the number of hours kim works weekly as "x"
If she reduces this number of hours by one-fourth and her current weekly income is $520, then it means the amount to be deducted is;
[tex]\frac{1}{4}[/tex] × $520 = $130
Thus, her new weekly income will be;
$520 - $130 = $390
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