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zubka84 [21]
3 years ago
11

All of the members of our spray-painting team paint at the same speed. If 20 team members can paint a 4800 square foot wall in 3

6 minutes, then how many minutes would it take for 9 team members to paint a 3600 square foot wall?
thanks ! :)
Mathematics
1 answer:
Tresset [83]3 years ago
7 0

Answer:

60 minutes

Step-by-step explanation:

How fast can one team member paint?

20 * 36 = 720 minutes

One team member can paint a 4800 square wall in 720 minutes.

How fast can one team member paint a square wall of 3600 square feet?

720 * (3600/4800) = 540 minutes

Now how fast would it take 9 team members?

540 / 9 = 60 minutes.

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Evaluate the expression 50g^2 if g = 1/5.
andrezito [222]

Answer:

2

Step-by-step explanation:

50*1/5 squared

1/5 = 0.2.

0.2 squared = 0.04

0.04 * 50 = 2

3 0
3 years ago
50 BIG POINTS! Help me on math please!  @ Apologiabiology, @ Bookishfairy73
nekit [7.7K]
Rate of change is also knkown as slope which is found by
\frac{y2-y1}{x2-x1}=slope if you know 2 points/ordered pairs
aos, if x incheases while y decreases then slope is negative
when x increases while y increases then slpe if positive
also, if you can convert to y=mx+b, m=slope
another thing if you have ax+by=c then slope=-a/b

so first one
2x-5y=15
a=2
b=-5
-2/-5=2/5
slope=2/5
positive

next
y=-4x
-4 =slope=negative


x increases while y decreases
negative

x increases while y decreases
negative


so
Positive
Negative
Negative
Negative





A. 6x-3y=12
sloope=-6/-3=2

B. y=5x+b
slope=5

C. (8-2)/(3-1)=6/2=3
sloope=3

D. goes up 4 units and goes right 1 unit, 4/1=4
sloope=4


5 is greates
B is the answer









A. (6-3)/(4-3)=3/1=3
slope=3

B. y=4+6x
slope=6


C.12x+6y=18
slope=-12/6=-2

D. goes down 5 units as it goest 1 uniit to right aka -5./1
slope=-5


greatest is 6
B is answer











the starting value I would guess si when x=1 what is the greats y value

look at each
first one
A. x=1 and =-3

B.y=3x-8
y=3(1)-8
y=3-8
y=-5

C. 8x+4y=16
8(1)+4y=16
8+4y=16
4y=8
y=2

D. at 1 unit to right it is 1 nit up so y=1


greatest is  2 or C





so just subsitute 1 for x since x represents how many teaspoons
y=16(1)560
y=16+560
y=576 caloris for 1 sugar teaspoon

for honey, just read off the graph
for when x=1
y=504

so calores of sugar=576
calories in honey=504






ANSWERS

Postive
Negative
Negative
Negative

B

B

C

sugar=576
honey=504
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Answer:

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Important to Note:

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