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TEA [102]
2 years ago
9

A scientist counts 25 bacteria present in a culture and finds that the number of bacteria tripled each hour. the function y=25•3

^x models the number of bacteria after x hours. estimate when there will be about 1170 bacteria in the culture.
A. about 3.5 hours
B. about 5.5 hours
C. about 2.5 hours
D. about 4.5 hours
Mathematics
2 answers:
LUCKY_DIMON [66]2 years ago
5 0

Answer: The answer is 3.5

Step-by-step explanation:

alekssr [168]2 years ago
3 0

Answer:

3.5

Step-by-step explanation:

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To the nearest tenth, which is the BEST estimate for the volume of the given pyramid?
mixer [17]

Answer:

4.2 cubic inches

Step-by-step explanation:

Find the diagram attached

Volume of the rectangular pyramid = BH/3

B is the base area

H is the height of the pyramid

Given

Base area = 3.2in * 1.4in

Base area = 4.48sq. in

Height = 2.8in

Volume of the rectangular pyramid = 4.48*2.8/3

Volume of the rectangular pyramid = 12.544/3

Volume of the rectangular pyramid = 4.2 cubic inches

5 0
2 years ago
A climber who is 6 feet tall, casts a shadow that is 20 feet tall, at the same time that a tree casts a shadow which is 90 feet
Agata [3.3K]
The tree is about 27.3 ft. tall.
8 0
3 years ago
Read 2 more answers
In ΔLMN, n = 92 inches, ∠N=46° and ∠L=11°. Find the length of l, to the nearest inch.
Vilka [71]

Answer:

24 inches

Step-by-step explanation:

A triangle is a polygon with three sides and three angles. The types of triangles are scalene triangle, equilateral triangle, right angled triangle and obtuse triangle.

Sine rule states that given a triangle with sides a, b, c and their corresponding angles opposite to the sides as A, B, C. Then:

\frac{a}{sinA} =\frac{b}{sinB} =\frac{c}{sinC}

In triangle LMN:

We can find the length of l using sine rule:

\frac{l}{sinL}=\frac{n}{sinN}  \\\\substituting:\\\\\frac{l}{sin(11)}=\frac{92}{sin(46)}  \\\\l=\frac{92}{sin(46)}*sin(11)\\\\k=24\ inches \\

5 0
2 years ago
Question 4 (1 point)
igomit [66]

Answer:

x = 15

Step-by-step explanation:

We want to solve for x in  3*(2x + 5) = 3x + 4x

First simplify.

3*(2x + 5) = 7x

Next, distribute the 3.

3*2x + 3*5 = 7x

6x + 15 = 7x

15 = 7x - 6x

15 = x

4 0
2 years ago
Please help me guys please
madam [21]

parallel when a=2

perpendicular when a=-1/2

3 0
3 years ago
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