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3 years ago

10

A scientist observes and counts 155 bacteria in a culture. Later, the scientist counts again and finds the number has increased

by 40%.How many bacteria are there now?

1 answer:

nataly862011 [7]3 years ago

5 0

IM STILL TRYNA GET THIS ONEE TOO

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What is true about the image ΔQ'R'S'? Select three options.

sergij07 [2.7K]

Answer:

$D_{O,2} (x,y) = (2x, 2y)$

Side Q'S' lies on a line with a slope of -1.

The distance from Q' to the origin is twice the distance from Q to the origin.

Step-by-step explanation:

The explanations are as follows

As we can see from the attached figure that the ΔQ'R'S' is dilated i.e transformation is made or change in size

Now

Based on

(x,y) = (2x,2y)

The intercepts are as follows

For S

(-1,1) = (-2,2)

For Q

(-3,3) = (-6,6)

For S

(2,4) = (4,8)

Based on this we can say that the three above options are correct

8 0

3 years ago

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Sean wrote a number on a piece of paper.

just olya [345]

The Sean's number is x. Formulate the equation:

x * 5 : 2 = 30
5x = 30 * 2
5x = 60
x = 60 : 5
x = 12

Answer: the Sean's number is 12.

8 0

3 years ago

3.4=21 2.5=7. 4.4=؟

Licemer1 [7]

Answer:

32

Step-by-step explanation:

From the given values

The possible logic could be

if x.y is given

then it is equal to $=\frac{(x+y)\times x}{y-3}$

For 1st example

3.4 $=\frac{(3+4) \times 3}{4-3} =\frac{21}{1} =21$

For 2nd example

2.5 $=\frac{(2+5) \times 2}{5-3} =\frac{7 \times 2}{2} =7$

⇒4.4 $=\frac{(4+4)\times 4}{4-3} =32$

4 0

3 years ago

Rick bought 3 shirts for $18 each, 2 pairs of socks for $3.99 a pair, and a pair of pants for $45.00. The sales tax

Andrews [41]

Answer:

Step-by-step explanation:

(3(18)+2(3.99)+45)(1.08)=(106.98)(1.08)=$115.54 (rounded to nearest cent)

7 0

2 years ago

Find the perimeter= 55

Nostrana [21]

The answer would be 483,972 miles = 55

5 0

3 years ago

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