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Lubov Fominskaja [6]
4 years ago
14

Help me with number 13 and 14 in he pictures

Mathematics
2 answers:
Goryan [66]4 years ago
7 0
11 is South Africa because if its 60.3 when its LOW then it would be really high if it was the high temp
arsen [322]4 years ago
3 0
I don't know about 13 but 14 is Chicago I'm pretty sure

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F the experimental value for the percentage of o is 37%, the accepted value of the percentage of oxygen is 40%, what is the perc
fenix001 [56]
The percentage error can be calculated using the following rule:
% error = difference between values / accepted value

From the givens:
The accepted value = 40%
Difference between values = 40% - 37% = 3%

Substitute in the equation to get the percentage error as follows:
% error = (3/40) * 100 = 7.5%
3 0
3 years ago
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What does 2^3 equal?
yawa3891 [41]
2³ is the same as 2 x 2 x 2.
This means that 2³ = 8
5 0
3 years ago
Could someone help me please please
Vera_Pavlovna [14]

this is what you get while graphing the equation ! hopes this helps with your answer !

5 0
3 years ago
What is 1/10 of 32 million
viktelen [127]
1/10 of 32 million is 3.2 million.

Because

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7 0
3 years ago
Solve equation by the quadratic formula. List the solutions, separated by commas.<br> 4r^2 +3r+10=8
slega [8]

Answer:

-\frac{3}{8} +\frac{\sqrt[]{23}i }{8},-\frac{3}{8} -\frac{\sqrt[]{23}i }{8}

or

-0.375+0.599479i,-0.375-0.599479i

Step-by-step explanation:

4r^2+3r+10=8

Bring the 8 to the left side so that we equal the equation to 0. To do this, simply substract 8 on both sides.

4r^2+3r+10-8=8-8\\4r^2+3r+2=0

Where;

a=4\\b=3\\c=2

Formula: x=\frac{-b\frac{+}{}\sqrt[]{b^2-4ac}  }{2a}

Replace. Let x be r

r=\frac{-3\frac{+}{}\sqrt[]{(3)^2-4(4)(2)}  }{2(4)}

r=\frac{-3\frac{+}{}\sqrt[]{9-32}  }{8}

r=\frac{-3\frac{+}{}\sqrt[]{-23}  }{8}

It has no real solution because the square root is negative.

We can say that,

r=-\frac{3}{8} \frac{+}{}\frac{\sqrt[]{23}*\sqrt[]{-1}  }{8}

r=-\frac{3}{8} \frac{+}{}\frac{\sqrt[]{23}i }{8}

r_1=-0.375+0.599479i\\r_2=-0.375-0.599479i

5 0
3 years ago
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