Step-by-step explanation:
6 men → 4 days → 3 metres
1 man → 24 days → 3 metres
1 man → 8 days → 1 metres
1 man → 56 days → 7 metres
10 men → 5.6 days → 7 metres
therefore, 5.6 days
Topic: direct n inverse proportions
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Answer:
It will take 5.6 days for the 10 men to dig the same hole 7 m deep.
Step-by-step explanation:
Laying the data in column
----------------------------------------------------
6 men 3 m hole 4 days
10 men 7 m hole x days
-----------------------------------------------------
As [tex]6[/tex] men dig a hole in [tex]4[/tex] days, so their rate will be:
[tex]rate\:=\:\frac{4}{3}[/tex]
Then [tex]6[/tex] men would take [tex]7\times \frac{4}{3}=\frac{28}{3}[/tex] days to dig a hole of depth 7 m.
As we are letting 10 men do work, so they would
take [tex]\frac{6}{10}\times \frac{28}{3}=\frac{28}{5}[/tex] days.
so
[tex]\frac{6}{10}\times \frac{28}{3}=\frac{28}{5}[/tex]
[tex]=5.6[/tex] days
Therefore, it will take 5.6 days for the 10 men to dig the same hole 7 m deep.
(its part b to question 9 ) If there are 15 students who don't wear glasses how many students are there in class? PLZ HELP WILL GIVE BRANLIST
Answer:
there are 25 students in the class and 15 who wear glasses.
Answer:
spaciously 09773616266
PLS PLS PLS ANSWER ASAP FOR BRAINLIEST
There are 4 cookies and 12 cupcakes leftover at a bake sale. What is the ratio of cookies to cupcake? Your answer must be in simplest form.
PLS ANSWER ASAP
Answer:
1:3
Step-by-step explanation:
4/12 simplified is 1/3
for every one cookie leftover, there are 3 cupcakes leftover
xoxo, your highness...15 POINT QUESTION; I REALLY NEED HELP
A dietician gathered data about the amounts of flour, baking powder, and butter used for several different muffin recipes. She used a graphing tool to organize the data in different scatter plots and found the following lines of best fit:
The relationship between the baking powder used, x, and the flour used, y, is modeled by the equation y = 0.13x + 0.92, and the correlation coefficient for the data is 0.953.
The relationship between the baking powder used, x, and the butter used, y, is modeled by the equation y = 0.24x + 0.76, and the correlation coefficient for the data is 0.802.
The relationship between the flour used, x, and the butter used, y, is modeled by the equation y = 0.86x + 0.52, and the correlation coefficient for the data is 0.693. Which line of best fit can the dietician expect to produce the most reliable predictions?
A. the line modeling the baking powder and the butter used
B. the line modeling the baking powder and the flour used
C. the line modeling the flour and the butter used
D. All three lines will give equally reliable predictions.
Answer:
the line modeling the baking powder and the flour used
Step-by-step explanation:
plato master test
On comparing the pairwise R - squared value between the three variables, we find that the line modeling the baking powder and the flour used can be expected to produce the most reliable predictions.
What is R - squared value ?R-Squared value is a quantifiable analysis of how well the line of best fit (linear regression model) fits your data. A value closer to 1 (100%) is usually good.
The coefficient of determination - R - squared value is square of the correlation coefficient.
R - squared value of the relationship between baking powder and flour used = 0.953² = 0.908
R - squared value of the relationship between baking powder and butter used = 0.802² = 0.643
R - squared value of the relationship between flour and butter used = 0.693² = 0.48
Since, on comparing the R - squared values of the three relationships, we find that the R - squared value of the relationship between baking powder and flour used is largest. Thus, line of best fit between baking powder and flour is expected to produce the most reliable predictions.
Learn more about R - squared value here
https://brainly.com/question/813508
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Which subsets does 65/13 belong? Move the appropriate subsets into this box.
If u answer all the questions i will give u ez questions with a lot of points
Answer:
honestly I can not see it
Step-by-step explanation:
its pppppppp pls answer me
both of the questions
BRAINLYEST
1: D.
2: A.
Random text (I had to make the answer 20 characters or more.
Part 1:
D) 2 2/4
point B is in between the 3 and the half-point of 2. Which is 3/4 of 2.
3/4 + 2 = 2 3/4
Part 2:
C) the 12th day
It will be when Matt has his 2nd quiz and Meg will have her 4th quiz.
6 x 2 = 12
3 x 4 = 12
(it could also be the 6th day [A)] when Matt has his first quiz and Meg has her second quiz)
Three more than a number times six is fifteen
Answer:
3 + 2=5
5 x 6 = 15?
Step-by-step explanation:
Find the quadratic equation 3 and-5
Answer:
x^2 + 2x - 15 = 0.
Step-by-step explanation:
If you mean the equation with zeroes of 3 and -5 it is:
(x - 3)(x + 5) = 0
x^2 + 2x - 15 = 0.
In ΔUVW, u = 44 inches, ∠W=56° and ∠U=117°. Find the length of v, to the nearest inch.
Answer:
The length of v is 6 inches
Step-by-step explanation:
Here, we want to calculate the length of v to the nearest inch
The best way to go about this is to use the sine rule
But before we proceed, we need the measure of angle V
Mathematically, since we have a triangle
W + U + V = 180
This is the sum of angles in a triangle
56 + 117 + V = 180
V = 180-56-117
V = 7 degrees
so we proceed to use sine rule to get the length of v
Mathematically;
v/Sin V = u/Sin U
Thus;
v/sin 7 = 44/sin 117
v = 44sin 7/sin 117
v = 6.018
This is approximately 6 inches
Answer:
6
Step-by-step explanation:
What is the domain of the function shown in the graph?
Answer:
Step-by-step explanation:
domain holds all the x values and for this graph it looks like
0< x < -∞ or just x >0
yet I do not see this answer as an option
if it was range will be the y-values and the answer will be
A. x≥ -1
the product of d and 4
Answer: 4d
Step-by-step explanation:
Product means multiplication, so the product of d and 4 means d times 4.
Tarin received a raise of $80 per week. If he was making $500 per week before the raise, what was the percent change in his earnings?
Increase or decrease? increase
amount of change = 80
original amount = 500
percent
Final result =
16%
Step-by-step explanation:
500/100 = 1% = 5
80 / 5 = 16
Solve for x.
x + 47 = -23
x =
Answer:
x = -70
Step-by-step explanation:
x+47=−23
Subtract 47 from both sides.
x+47−47=−23−47
x = −70
Answer:
x=-70
Step-by-step explanation:
x +47= -23
-47 -47
x= -70
a necklace contains 36 gram of gold 72% of the mass of necklace is gold what is the mass of the necklace
Answer:
50 grams
Step-by-step explanation:
36 grams = 72%
→ Find 1% by dividing both sides by 72
0.5 grams = 1%
→ Times both sides by 100 to find 100%
50 grams = 100%
Step-by-step explanation:
Multiply 32 by 72 to get thw mass.
A salesman receives a weekly salary of $150. He
also receives $4 for each tire he sells. One week, he
earned $330. How many tires did he sell that week?
Answer:
150 + 4x = 330
4x = 180
x = 45
Step-by-step explanation:
Does the equation y+3=2(x+9) include the point (-6,3)?
Please explain how you got the answer! :3
Answer:
Step-by-step explanation:
if it includes the point should verify the equation
substitute x= -6 and y=3 in the equation
3+3 = 2 ( -6+9) calculate
6 = 6 is true! so YES the equation includes the point
Julie is about to ride a straight water slide. The length of the water slide itself is 20 meters. The splash pool at the end of the slide is 16 meters away from the base of the tower that leads up to the launching platform. How high is the launching platform?
Answer:
The launching platform height is 12 meters.
Step-by-step explanation:
Find the next term of the given sequence. 1.31, 2.54, 3.77, ...
4.90
5.00
5.10
Answer:
5.00
Step-by-step explanation:
How many kilograms are in 44 pounds
Answer:
19.9581kg
Step-by-step explanation:
Hmm almost equal to 20kg
Dan mixed 2 parts of milk and 3 parts of syrup to make a drink. How many parts of milk did Dan mix with each part of syrup? (1 point) Group of answer choices A two over five B two over three C three over five D three over two
Answer:
B
Step-by-step explanation:
2 parts of milk is mixed with 3 parts of syrup
This implies 2/3 parts of milk is mixed with 1 part of syrup.
y = x - 2
-2x + 3y = -1
What is x and y?
Answer:
(5, 3)
General Formulas and Concepts:
Pre-Algebra
Order of Operations: BPEMDASEquality PropertiesAlgebra I
Solving systems of equations using substitution/eliminationSolving systems of equations by graphingStep-by-step explanation:
Step 1: Define systems
y = x - 2
-2x + 3y = -1
Step 2: Solve for x
Substitute in y: -2x + 3(x - 2) = -1Distribute 3: -2x + 3x - 6 = -1Combine like terms: x - 6 = -1Isolate x: x = 5Step 3: Solve for y
Define equation: y = x - 2Substitute in x: y = 5 - 2Subtract: y = 3Gabby measures out 5 1/2 pounds of almonds at the grocery store bulk section. At the check out total cost came up to $20.90 What is the price per pound?
Answer:
$3.80/pound
Step-by-step explanation:
We can just divide the price by the amount to find the price per pound.
20.90 ÷ 5.5 = 3.80
Hope this helps!
Shoes: $59.97, Shirt: $10.99, Pants: $19.99
Calculate the subtotal.
Answer:
90.95
Step-by-step explanation:
Answer:
If you add it all up, your answer is $90.95
Which of the ordered pairs are functions
(Hint: there are more than one?)
15 POINTS
OR BRAINLIST ???
Answer:
c
Step-by-step explanation:
Geometry question plz help me ?
slope is 2 and (−1, 6) is on the line; point-slope form
Answer:
y-6=2(x-(-1))
Or simplified:
y-6=2(x+1)
Step-by-step explanation:
use the formula: y-y1=m(x-x1)
You spend $30.40 on 4 CDs. Each CD costs the same amount and is on sale for 80% of the original price. a. Write and solve an equation to find how much you spend on each CD. Let p represent the price you pay for each CD. Equation: =30.40 You spent $ on each CD. Question 2 b. The next day, the CDs are no longer one sale. You have $25. Will you be able to buy 3 more CDs? No, you will not be able to buy 3 more CDs. Question 3 c. Explain your reasoning for part (b). Each CD costs $ at the regular price, so 3 CDs would cost $ .
Answer:
$7.6 ;
No, you will not be able to buy 3 more CDs
$9.5
$28.5
Step-by-step explanation:
Given that :
Cost of 4 CDs = $30.40
Cost per CD is equal
Sale price = 80% of original price
Price p per CD:
Cost of 4 CDs / number of CDs
$30.40 / 4
= $7.6
2)
No, you will not be able to buy 3 more CDs
If x = original price
80% of x = 7.6
0.8x = 7.6
x = 7.6 / 0.8
x = $9.5
$9.5 * 3 =$28. 5
Hence, $25 can't buy 3 CDs the next day (28.5 > $25)
I need help pronto please it’s due in 15 minutes
Answer:
yes
Step-by-step explanation:
Answer:
Yes, she is rightYes, she will have $1.65 leftStep-by-step explanation:
2)
"4 friends had a lunch together [...] $33.40"
"They share the bill equality" = 33.40 ÷ 4
Everyone must pay = $8.35
Money left = $10 - $8.35
Money left = $1.65
HELP FAST PLZ
Cha deposits $200 into an account that pays simple interest at a rate of 6% per year. Huch interest will he be paid in
the 3 years
Answer:
$236 in 3 years
Step-by-step explanation:
Please help
Thank you
Answer:
[tex]C)2\sqrt{6}[/tex]
Step-by-step explanation:
[tex]\sqrt{24}\\=\sqrt{2*2*2*3} \\=\sqrt{4*6}\\=2\sqrt{6}[/tex]