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nata0808 [166]
2 years ago
14

Sec^2 (x/2)=2/1+cosx pls pls pls help

Mathematics
1 answer:
MAVERICK [17]2 years ago
8 0

Step-by-step explanation:

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A scientist had 3 1/2 liters of vinegar. He poured 2/3 of the vinegar into beaker. He then used 3/5 of the vinegar in the beaker
valentinak56 [21]

Answer:

A)2100 ml

Step-by-step explanation:

Given total vinegar is 3 1/2 liters and the used vinegar is  3/5 of the vinegar in the beaker:

#First calculate the amount of vinegar not poured in the beaker:

V_o=V_t-V_b\\\\=3\frac{1}{2}(1-\frac{2}{3})\\\\=1\frac{1}{6}

#Calculate amount of vinegar used in experiment:

V_b=\frac{2}{3}V_t=\frac{2}{3}(3\frac{1}{2})=2\frac{1}{3}\\\\V_u=\frac{3}{5}V_b=\frac{3}{5}\times 2\frac{1}{3}=1\frac{2}{5}

#The unused vinegar is therefore calculated by subtracting the used vinegar from the total at the start of the experiment:

V_r=V_t-V_u\\\\=3\frac{1}{2}-1\frac{2}5}\\\\=2\frac{1}{10}\times 1000\ ml\\\\=2100\ ml

Hence, the unused vinegar is 2100 ml

8 0
4 years ago
What is 65.079 rounded to the nearest tenth?
lawyer [7]
65.1 will be the answer. 
5 0
3 years ago
Read 2 more answers
PLEASE HELPPPPPPPPPPPP
Evgen [1.6K]

Answer:

V = 13312yd^2

Step-by-step explanation:

32 x 32 x 39 / 3 = volume

32 x 32 x 39 = 39936/3  = 13312 sq yard.

As you can see the formula for Volume is L x W x H / 3

The formula for Area of a pyramid is SA = A + (3/2)bh

We have one rule we work out the square to represent the A then we can find SA. While 3/2 is 1.5 really which is 150% of the height x the base, then we + plus the area of the square.

6 0
3 years ago
Can someone help me in this math problem? It’s a picture of the problem if you can!
lakkis [162]
Good job you got this
7 0
3 years ago
The difference between two negative numbers is always negative
const2013 [10]

Answer:sometimes. For example: -1 - -9= 8, its positive. -5 - -1= -4, its negative.

Step-by-step explanation:

4 0
3 years ago
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