3 years ago

40 is what percent of 150

Mathematics

1 answer:

MariettaO [177]3 years ago

6 0

Always use this formula to find a percentage:

% / 100 = Part / Whole replace the given values:

40 / 100 = Part / 150

Cross multiply:

40 x 150 = 100 x Part, or

6000 = 100 x Part

Now, divide by 100 and get the answer:

Part = 6000 / 100 = 60

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Solve the equation 12 + 4m = 24 A)m=9 B)m=8 C)m=3 D)m=-6

pantera1 [17]

12 +4m = 24

4m = 12

m = 12/4

m = 3 so choice C. is right sure

8 0

3 years ago

The number of bacteria growing in an incubation culture increases with time according to n left parenthesis t right parenthesis

Anon25 [30]

For this case we have the following function:
n (t) = 2400 * (5) ^ t
For n (t) = 60000 we have:
60000 = 2400 * (5) ^ t
We clear the value of t.
For this we use the logarithm:
(5) ^ t = 60000/2400
log5 ((5) ^ t) = log5 (60000/2400)
t = log5 (60000/2400)
t = 2 days
Answer:
the number of bacteria in the culture will be 60 comma 000 after:
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3 years ago

1.1 Solve the following equations: 1.1.1 (x+5)(x-3)=33

schepotkina [342]

Step-by-step explanation:

x²-3x +5x -15=33

x²-3x+5x=33+15

x²-3x+5x=48

x²+2x=48

divide both sides by 2

x²+x =24

x²= 24

x= ✓24

dunno from here

8 0

3 years ago

<img src="https://tex.z-dn.net/?f=%20-%200.4%20%2B%201.5%283.1%29" id="TexFormula1" title=" - 0.4 + 1.5(3.1)" alt=" - 0.4 + 1.5(

ANTONII [103]

Hi,

$- 0.4 + 1.5(3.1) \\ - 0.4 + 1.5 \times 3.1 \\ - 0.4 + 4.65 = 4.25$

Hope this helps.
r3t40

8 0

3 years ago

A family decides to put tiles in the entryway of their home. The entryway has an area of 7 square meters. If each tile is 5 cent

lyudmila [28]

9514 1404 393

Answer:

2800 tiles

Step-by-step explanation:

Each tile has an area of (0.05 m)² = 0.0025 m². Then the number of tiles required to cover 7 square meters is ...

(7 m²)/(0.0025 m²/tile) = 2800 tiles

It will take 2800 tiles to cover the entryway.

8 0

3 years ago