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2 years ago

HELLLLLP I AM RUNNIG OUT OF TIMEEEEEE I WILL MARK YOU BRILLLLLLLL

Mathematics

2 answers:

likoan [24]2 years ago

7 0

Answer:

A. 8

Step-by-step explanation:

16+y=24

16+8=24

Therfore the answer is A

Artemon [7]2 years ago

7 0

16 + y = 24
subtract 16 from both sides
y = 8

ANSWER: A

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The time needed to paint a fence varies directly with the length of the fence and inversely with the number of painters. If it t

astraxan [27]

Answer:

It will take 9 hours with 4 painters to paint 720 feet of fence.

Step-by-step explanation:

Given that,

The time needed to paint a fence varies directly with the length of the fence

$t\propto l$ .......(1)

and inversely with the number of painters

$t\propto \frac1P$ .....(2)

Combination of (1) and (2) is

$t\propto \frac lP$

where t represents time, $l$ represents length of fence, P represents number of painters.

Again we can write the above equation as

$\frac{t_1}{t_2}=\frac{\frac{l_1}{l_2}}{\frac{P_1}{P_2}}$

$\frac{t_1}{t_2}=\frac{l_1P_2}{l_2P_1}$

Given that,

It takes 7 hours with 2 painters to paint 280 feet of fence .

We need to find time to paint 720 feet of fence with 4 painters.

$t_1$ =7 hours, $l_1$ =280 feet, $P_1$ =2,

$t_2$ =? , $l_2$ = 720 feet, $P_2$ =4

$\therefore \frac{7}{t_2}=\frac{280\times 4}{720\times 2}$

$\Rightarrow \frac{t_2}{7}=\frac{720\times 2}{280\times 4}$

$\Rightarrow {t_2}}=\frac{720\times 2\times 7}{280\times 4}$

$\Rightarrow t_2=9$

It will take 9 hours to paint 720 feet of fence with 4 painters.

5 0

3 years ago

An accountant gets paid $150 for each tax return she prepares and her goal is to earn $6,750 preparing tax returns during this t

kolbaska11 [484]

Answer: 42

Step-by-step explanation:

First you have to subtract 450 from 6750 to get 6300

Second you have to figure out how many tax returns you have to make by dividing 6300 by 14 to get 450

Third you have to do 6300 / 42 to get 150 so if you times 150x 42 equals 6300.

5 0

2 years ago

Sketch the region bounded by the curves, and visually estimate the location of the centroid. y = 2x, y = 0, x = 1 WebAssign Plot

ASHA 777 [7]

Answer:

the graph is in the attachment.

the coordinates of the centroid : (2/3,2/3)

Step-by-step explanation:

y=0 represents x-axis ( you can easily mark it on the graph)

now draw x=1 line.( It is a line parallel to y axis and passing through the point (1,0) )

y=2x is a line which passes through origin and has a slope "2"

by using these sketch the region.

I have uploaded the region bounded in the attachment. You may refer it. The region shaded with grey is the required region.

to find centroid:

it can be easily identified that the formed region is a triangle

the coordinates of three vertices of the triangle are

(1,2) , (0,0) , (1,0)

( See the graph. the three intersection points of the lines are the three vertices of the triangle)

for general FORMULA, let the coordinates of three vertices of a triangle PQR be P(a,b) , Q(c,d) , R(e,f)

then the coordinates of the centroid( let say , G) of the triangle is given by

G = $(\frac{a+c+e}{3} , \frac{b+d+f}{3} )$

therefore , the exact coordinates of the centroid =

$(\frac{1+0+1}{3}, \frac{2+0+0}{3} ) = (\frac{2}{3}, \frac{2}{3} )$

this point is marked as G in the graph uploaded.

4 0

2 years ago

Time is:

choli [55]

Answer:

I think it's measure of distance.

let me know if that is right

3 0

3 years ago

Please help with this

Likurg_2 [28]

Idk know the answer sorry

3 0

2 years ago