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andreyandreev [35.5K]
3 years ago
6

What is the slope that passes through the lines (2.1,-4.2) and (2.5,-5)

Mathematics
1 answer:
Usimov [2.4K]3 years ago
7 0

slope = (y2-y1)/(x2-x1)

 = (-5--4.2) /(2.5 -2.1)

(-5+4.2)/(2.5-2.1)

=-.8/.4

m=-2

the slope is -2

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Pleaseee someone help me :( Ive been stuck on this for an hour
Whitepunk [10]

Answer:

The number of times organism B's population is larger than organism A's population after 8 days is 32 times

Step-by-step explanation:

The population of organism A doubles every day, geometrically as follows

a, a·r, a·r²

Where;

r = 2

The population after 5 days, is therefore;

Pₐ₅ = = 32·a

The virus cuts the population in half for three days as follows;

The first of ta·2⁵ he three days = 32/2 = 16·a

The second of the three days = 16/2 = 8·a

After the third day, Pₐ = 8/2 = 8·a

The population growth of organism B is the same as the initial growth of organism A, therefore, the population, P₈ of organism B after 8 days is given as follows;

P₈ =  a·2⁸ = 256·a

Therefore, the number of times organism B's population is larger than organism A's population after 8 days is P₈/Pₐ = 256·a/8·a = 32 times

Which gives, the number of times organism B's population is larger than organism A's population after 8 days is 32 times.

Hope this helps you out! :)

Also, it's OK! This was actually pretty hard to figure out!

6 0
3 years ago
Is 2 feet longer than 30 inches
loris [4]
1 foot is 12 inches. 2 feet is 24 inches. yea so I'd say 30 inches is definitely longer
5 0
3 years ago
What is the value of the expression shown below? 8 + (7 + 1) 2 ÷ 4 ⋅ 2
Leni [432]
The answer is 10

8+(8)2÷4·2    
8+16÷4·2    4·2=8 then 16÷8       
8+2=10

just use PEMDAS

6 0
2 years ago
Please help me !!!!!
Tasya [4]

Answer:

B. A dilation with a scale factor of 0.5

Step-by-step explanation:

A. is wrong because it is congruent transformation because reflections keep the angles and side lengths of the figure the same.

B. is right because it is NOT congruent because a dilation of any scale factor other than 1 results in a similar figure, because the side lengths are proprtional but not equivalent

C.  is wrong because translations keep the angles and side lengths of the figure the same.

D. is wrong because a scale factor of 1 changes nothing about the figure.

4 0
2 years ago
The bowl of a circular birdbath has an inside diameter of 18 inches, as shown in the drawing belon.
Step2247 [10]

Answer:

254 square inches

Step-by-step explanation:

A=pi*r^2

A=pi*(d/2)^2

A=3.14*(18/2)^2

A=3.14*(9)^2

A=3.14*81

A=254.34 in^2

So, rounded no the nearest whole, the answer is 254 in^2

Which is option 2 or B

4 0
3 years ago
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