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4 years ago

How to improve in math?

1 answer:

7 0

The best way is to do problems over and over again and making mistakes with them.There is no point in doing them if you get correct answers.
When you make mistakes you ask someone what’s wrong and try not to make that mistake again.
That’s how I became a master at maths and physics.

As for help with calculus the important thing is to understand how graphing works.
Once you got that do more questions.
So basically to summarise make mistakes don’t repeat and find out how it works

Hope this helps:)

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What is 11 divided by 5 as a fraction

kaheart [24]

It’s like 22/10 or something

8 0

3 years ago

Read 2 more answers

The power g2 is equivalent to 81. What is the value of g-2?

Serggg [28]

Answer:

Step-by-step explanation:

g^2 =81

so, g=9

g-2=9-2=7

8 0

3 years ago

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An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans have brown eyes. A random sam

telo118 [61]

Answer:

The z-statistic for this test is -1.547 and P-value of the test is 0.0618

Step-by-step explanation:

An article in the Washington Post on March 16, 1993 stated that nearly 45 percent of all Americans have brown eyes.

We are given that A random sample of n=82 C of I students found 30 with brown eyes.

n = 82

x = 30

$H_0:p=0.45\\ H_a:p\neq0.45$

Now to find z statistic we will use one sample proportion test

$\widehat{p}=\frac{x}{n}$

$\widehat{p}=\frac{30}{82}$

$\widehat{p}=0.365$

Formula of test statistic = $\frac{\widehat{p}-p}{\sqrt{\frac{p(1-p)}{n}}}$

= $\frac{0.365-0.45}{\sqrt{\frac{0.45(1-0.45)}{82}}}$

= $-1.547$

So, the z-statistic for this test is -1.547

Now refer the z table for p value .

p value = 0.0618

The P-value of the test is 0.0618

Hence the z-statistic for this test is -1.547 and P-value of the test is 0.0618

6 0

3 years ago

Tan^2 0+Tan^2 30+Tan^2 60+Sin^2 0

Ksenya-84 [330]

Answer:

2.996519411885697

Step-by-step explanation:

$\tan(20) + \tan(230) + \tan(260) + \sin(20) = 2.996519411885697$

mark me brainliest

5 0

3 years ago

What is the value of x?<br> sin 49° = COS X<br> Enter your answer in the box.

ser-zykov [4K]

Answer:

The letter "x" is often used in algebra to mean a value that is not yet known. It is called a "variable" or sometimes an "unknown". In x + 2 = 7, x is a variable, but we can work out its value if we try!

Step-by-step explanation:

here

8 0

3 years ago