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Studentka2010 [4]
3 years ago
9

Help!Help!Help!Help!Help!Help!Help!Help!Help!

Mathematics
2 answers:
vova2212 [387]3 years ago
8 0

Answer:

30

Step-by-step explanation:

fgiga [73]3 years ago
7 0

Answer:

30

Step-by-step explanation:

60% of 30 students is 18 girls

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In a lab experiment, 1900 bacteria are placed in a petri dish. The conditions are such
GREYUIT [131]

Answer:

393 bacteria

Step-by-step explanation:

First find how much it would increase per hours :

1900 / 29 = 65.5172414

Then take this and multiply it by 6 to get :

393.103448

Round it to the nearest whole number to get:

393 bacteria

3 0
3 years ago
1. Which of the following coordinates for p will make line mn perpendicular to line op in the diagram below?
TiliK225 [7]
1. (3,2)....because when finding the slope, we find the the slope of mn and the slope of op are negative reciprocals.

2. y = 5x - 7.....slope here is 5....perpendicular line has a negative reciprocal slope...so the slope has to be -1/5

y= mx + b
slope(m) = -1/5
(-10,3)...x = -10 and y = 3
now we sub and find b, the y int
3 = -1/5(-10) + b
3 = 2 + b
3 - 2= b
1 = b
so ur perpendicular equation is : y = -1/5x + 1
5 0
3 years ago
Please help i’m doing trying to do my gf work please i’ll give you brainliest
otez555 [7]

Answer:

t = 5 seconds h = 128 feet

Step-by-step explanation:

The given equation of the object is :

h(t)=-16t^2+64t+80 .....1

When it hits the ground,

h(t) = 0

So,

-16t^2+64t+80=0\\\\t=-1\ s\ and\ t=5\ s

The object will hit the ground in 5 seconds.

Now, put t = 1 s in equation (1).

h(1)=-16(1)^2+64(1)+80\\\\h(t)=128\ ft

The object is at a height of 128 ft at 1 second.

7 0
3 years ago
A triangle has two sides of 7 and 12 what value could the length of the third side be
mezya [45]
It would be D:7
It needs to have one side bigger than
7 0
3 years ago
The figure is the net for a rectangular prism.
oksano4ka [1.4K]

Answer:

SA=544\ cm^2

Step-by-step explanation:

we know that

The surface area of a rectangular prism is equal to the area of its six rectangular faces

using the net

The surface area is equal to

SA=2[(16)(6)]+2[(16)(8)]+2[(8)(6)]

SA=192+256+96

SA=544\ cm^2

3 0
3 years ago
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