Given:
w varies jointly as x and y.
w=10 when x=2 and y=1.
To find:
The value of w when x=4 and y=2.
Solution:
w varies jointly as x and y.
[tex]w\propto xy[/tex]
[tex]w=kxy[/tex] ...(i)
Where, k is the constant of proportionality.
w=10 when x=2 and y=1.
[tex]10=k(2)(1)[/tex]
[tex]10=2k[/tex]
[tex]\dfrac{10}{2}=k[/tex]
[tex]5=k[/tex]
The value of k is 5.
Putting k=5 in (i), we get
[tex]w=5xy[/tex]
To find the value of w when x=4 and y=2. Put x=4 and y=2.
[tex]w=5(4)(2)[/tex]
[tex]w=40[/tex]
Therefore, the value of w is 40 when x=4 and y=2.
Help me please with This no need to explain
Answer:
B.3
Step-by-step explanation:
Answer:
the anser is B
Step-by-step explanation:
3+7=10
7-3=4
done
Зp - р
Please lend me a helping hand
Answer:
Step-by-step explanation:
If scientific notaion it would be 3p^2 if not it would be 3p times 2
Answer: 3p^2
Step-by-step explanation:
i don't think there is much of an explanation for this one, you are simply multiplying by P again, so you just turn it into an exponent. :)
Use the formula v = u + at to find the velocity, when
The initial velocity is 3m/s.
The Acceleration is 1.5m/s Squared.
The time is 7 seconds.
Answer:
[tex]v = u + at \\ v = 3 + (1.5 \times 7) \\ v = 3 +10.5 \\ \boxed{v = 13.5 \: m {s}^{ - 1}} [/tex]
13.5 m/s is the right answer.A rectangular field has an area of 646 square feet. The width of the field is 19 feet. What is the length of he field?
If rectangular field has an area of 646 square feet. The width of the field is 19 feet. Then length of the field is 71.77 feet.
What is Area of Rectangle?The area of Rectangle is length times of width.
Given,
Area of rectangular field is 646 square feet.
width of the field is 19 feet.
We need to find the length of the field.
Area of rectangle=Length×Width
646=Length×19
Divide both sides by 19
Length=646/9
Length=71.77 feet
Hence 71.77 feet is the length of the field.
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Henri and Talia are mixing paint for an art project. They mixed p liters of red paint, 0.6 liters of blue paint, and p – 0.4 liters of white paint. They then divided the mixture evenly into 2 jars. If each jar contains 2.4 liters of paint, how much red paint did they use? Use numbers to fill in the blank.
Answer:
I think the answer is 3.8.
Step-by-step explanation:
Because there is 0.6 for the blue paint and 0.4 for the white paint, and p=red paint. If you divide all 3 of them equally into 2 jars, you have add 0.4 and 0.6 together and then divide by 2, then substract it from 2.4. You will get 1.9, then multiply 1.9 by 2, that is how much Henri and Talia used for the red paint, which is 3.8 liters.
2α – 10 = 12 pleaseeeeeee ! help me with this one !!!!!
Which postulate proves that the triangles below are similar?
-SSS
-AA
-SAS
-these triangles are not similar
Answer:
Option (4)
Step-by-step explanation:
From the picture attached,
Side lengths of the triangles have been given in the picture attached.
If these triangles are similar, their corresponding sides will be proportional.
By this property of similarity,
[tex]\frac{19.5}{5}= \frac{20}{8}[/tex]
3.9 = 2.5
Which is not true.
Therefore, these triangles are not similar.
Option (4) will be the answer.
2. Simplify: -7(11 - 40 + 13d)
Miranda is buying yarn so she can crochet scarves for her family. She likes the Furry Fibers
brand best. At the store, she finds a 7-ounce roll of Furry Fibers yarn for $8.33 and a 16-
ounce roll for $18.72. Which size roll is the better value?
7-ounce or
16-ounce
Answer: 16 ounce
Step-by-step explanation:
16 ounce is 1.17 per ounce but 7 ounce is 1.19 per ounce in real life the bigger is usually a better deal anyway
Answer:
YOOOOOOOOOOOOOOOOOOO AAAAAAAAAAAAAAAAAH the answer is 16 ounce
Step-by-step explanation:
Bom bam bop ignore this
What is the slope of the line
Answer:
B) 4
Step-by-step explanation:
Use the slope formula:
slope [tex]m = \frac{y_2 - y_1}{x_2 - x_1}[/tex]
Let:
[tex](x_1 , y_1) = (1 , -2)\\(x_2 , y_2) = (2 , 2)\\[/tex]
Plug in the corresponding numbers to the corresponding variables:
slope:
[tex]m = \frac{2 - (-2)}{2 - 1} \\m = \frac{2 + 2}{2 - 1}\\m = \frac{4}{1} = 4[/tex]
B) 4 is your answer.
~
Which set of numbers forms a right triangle?
A. 3,4,5
B. 5, 9, 13
C. 7, 7, 12
D. 8, 15, 20

Answer:
C
Step-by-step explanation:
If you think about it hard enough, and look at it real hard, you can see. Think of like a capital L. 7 tall and 7 wide. I'm not sure but thats what I think.
help! step by step please!
Answer:
so it looks like it's $245 or it's $85
Step-by-step explanation:
because your equation is 5n+45
$5 dollars earned for every n(magazine) sold.
Alternatively:
if she gets 5 dollars for every 10 sold then after selling 40 it would be
40/5=8 then it becomes 8*5+45=85
first three terms of a sequence are given. Round to the nearest thousand (if necessary) 152,149,146... Find the 30th term
Answer:
65
Step-by-step explanation:
use the following equation
aₙ=a₁+(n-1)d
Where d is the common difference
n is the term
a₁ is the first term
the common difference is -3 (149-152)
this means we have
152+(30-1)*-3
Compute this and get
65
2y = 6x + 10 and y = 2x + 4
Answer:
x=-1, y=2
Step-by-step explanation:
2(2x+4)=6x+10
2x=-2
x=-1
y=2(-1)+4
y=2
Out of a total of 3000 available parking spaces in a mall
parking lot, 1875 are taken. What percent of the parking
spaces are taken?
Answer:
62.5% of the parking spaces are taken.
Step-by-step explanation:
Given
Total Spaces = 3000Taken paces = 1875To determine
What percent of the parking spaces are taken?
The percentage of taken spaces of the part can be determined using the formula
% of Taken spaces = [Taken spaces / Total Spaces ] × 100
= [1875 / 3000] × 100
= 0.625 × 100
= 62.5%
Therefore, 62.5% of the parking spaces are taken.
9² • (1+4) + 7 – 3 • 4 =
Answer:
400.
Step-by-step explanation:
Is this in quadrant 1,2,3 or 4 helppp plzzz I will mark brainliestttt
PLS HURRY WORTH 50 POINTS AND WILL MARK BRAINLIEST!!!!
A survey of a group of seventh-graders and a group of teachers at a local middle schoolers asked how many siblings they each have. The dot plots below show the results.
students:
x
x
x x
x x x
x x x
x x x x x
x x x x x
0 1 2 3 4 5 6 7 8 9
teachers:
x
x x
x x x x
x x x x x
x x x x x x x x
0 1 2 3 4 5 6 7 8 9
What is the closest to the difference between the means?
A. 0.5
B. 1.0
C. 1.5
D. 2.0
the answer is 1.5
Step-by-step explanation:
I took this test
Answer:
1.5
Step-by-step explanation:
What's the maximum amount of money you should spend on a Modern Art painting worth 30k if you had to pay 15% tax?
Answer:
Tax would be 4500$
Step-by-step explanation:
15/100 = x/30000
Do 15 x 30000 = 450000
then divide 450000 by 100 = 4500
What is the least common denominator For 3/8 and 3/10
Step by Step Solution. Least Common Multiple is : 120. Calculate Least Common Multiple for : 3, 8 and 10. Factorize of the above numbers : 3 = 3. 8 = 23 10 = 2 • 5. Build a prime factors table. ...
Rachel needs to write 3 book reports with b pages
and 3 science reports with s pages during the
school year. Write an algebraic expression for the
total number of pages Rachel will need to write.
Answer:
90% of people marry their 7th grade love. since u have read this, u will be told good news tonight. if u don't pass this on nine comments your worst week starts now this isn't fake. apparently if u copy and paste this on ten comments in the next ten minutes you will have the best day of your life tomorrow. you will either get kissed or asked out in the next 53 minutes someone will say i love you
Step-by-step explanation:
It t takes 5 identical robots 12 days to paint a long straight wall. How many robots will it take to paint wall in 20 days?
Answer:
12=5
12/5=2.4
20/2.4=8.3
9 robots
Step-by-step explanation:
Selma spent
3/10 of her allowance on a new backpack. What percent of her allowance did she spend?
Selma spent ?% of her allowance on a new backpack.
Answer:
30%
Step-by-step explanation:
Selma spent 3/10 of her allowance on a new backpack.
Hence, the percent of her allowance that she spent is calculated as:
Fraction of allowance spent on Backpack × 100
= 3/10 × 100
= 0.3/1 × 100
= 30%
Therefore, Selma spent 30% of her allowance on a new backpack.
A prom dress is on sale for $350. If the original price of the dress was $500, what percent of discount was used during the sale?
Answer:
30%
Step-by-step explanation:
Factorise fully
4y - 6
95, if g> 0?
Which expression is equivalent to
OA.
ole
OB. 596
O c.
TOT
con la
OD.
go
Reset
Answer:
equivalent expression of [tex]\sqrt[6]{g^5},\: if\:g>0[/tex] is [tex]\mathbf{g^{\frac{5}{6}}[/tex]
Option D is correct option.
Step-by-step explanation:
We need to find equivalent expression of [tex]\sqrt[6]{g^5},\: if\:g>0[/tex]
The equivalent expression can be found using exponent rules.
We know that: [tex]\sqrt[6]{x} = x^{\frac{1}{6}}[/tex]
Using this and solving our given expression
[tex]\sqrt[6]{g^5},\: if\:g>0\\=(g^5)^{\frac{1}{6}[/tex]
Using exponent rule: [tex](a^m)^n=a^{m*n}[/tex]
[tex]=g^{\frac{5}{6}[/tex]
So, equivalent expression of [tex]\sqrt[6]{g^5},\: if\:g>0[/tex] is [tex]\mathbf{g^{\frac{5}{6}}[/tex]
Option D is correct option.
In the morning, a farm worker packed 10 pints of raspberries every 4 minutes. In the afternoon, she packed 3 pints of raspberries every 2 minutes. What was the difference between her morning and afternoon packing rates, in pints per hour?
Answer:
In the morning
(3/4) (strawberries / minutes) * (60/1) (minutes / hours) = 45 (strawberries / hours)
in the afternoon
(2/3) (strawberries / minutes) * (60/1) (minutes / hours) = (40 strawberries / hours)
the difference between your morning and afternoon packing rates, in pints per hour is 45-40 = 5 (strawberries / hours)
Step-by-step explanation:
.
Answer:
60 pints
Step-by-step explanation:
10 pints every 4 minutes = 10(15) pints every 4(15) minutes which is the same as 150 pints per 1 hour
3 pints every 2 minutes = 3(30) pints every 2(30) minutes which is the same as 90 pints per 1 hour
150 - 90 = 60 pints difference
Stephen went to Game Stop to buy a new Xbox hat is $499 with 15% off. He has a coupon for an
additional 5% off. What is the final cost for the new Xbox?
$99.80
$374.25
$399.20
$402.94
Answer:
c. $399.20
Step-by-step explanation:
multiply 499 by .20 and get 99.8 subtract this from 499 get 399.20
Create two equivalent rates to 65 km/h with units for distance and time that are not kilometres and hours. At least one should be a unit rate.
Answer: 18.05556
Step-by-step explanation: 65 Kilometer/Hour (km/h) =. 18.05556 Meter/Second (m/s) Kilometer/Hour : Kilometers per hour (also spelling: kilometer per hour) is a unit of speed, defined as the number of kilometers travelled in one hour. The symbol of kilometer per hour is km/h or km•h−1.
Hopefully this helps :D
The units for distance and time are 3250/3 m/min and 325/18 m/s
What is unit rate?A unit rate means a rate for one of something. We write this as a ratio with a denominator of one.
For example, if you ran 70 yards in 10 seconds, you ran on average 7 yards in 1 second. Both of the ratios, 70 yards in 10 seconds and 7 yards in 1 second, are rates, but the 7 yards in 1 second is a unit rate.
Given that, we need to create two equivalent rates to 65 km/h with units for distance and time that are not kilometers and hours.
So,
65 km/h = 65 x 1000 m / 60 min = 3250/3 m/min
65 km/h = 65 x 1000 m / 3600 sec = 325/18 m/s
Hence, the units for distance and time are 3250/3 m/min and 325/18 m/s
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How to solve 72 + x+x + 52+80°
Answer:
2x+204 hope this helps pls give brainlist
Step-by-step explanation: