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1 year ago

Between a bar graph and a line graph, which type of graph would be best to compare the test scores?

Mathematics

1 answer:

Ludmilka [50]1 year ago

7 0

A line graph Would be the best to compare test scores

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Can you please answer this question

tamaranim1 [39]

$3tan^{2} \theta +7sec\theta=3$
First I converted the equation terms into sine and cosine.
$tan^{2}\theta = \frac{sin^{2}\theta}{cos^{2}\theta}$ and $sec\theta= \frac{1}{cos\theta}$
Substitution:
$\frac{3sin^2\theta}{cos^2\theta} + \frac{7}{cos\theta} =3$
Common Denominator Created:
$\frac{3sin^2\theta}{cos^2\theta} + \frac{7cos\theta}{cos^2\theta} =3$
Multiply each term by the LCD:
$3sin^2\theta+7cos\theta=3cos^2\theta$
Substitution: Recall ⇒ $sin^2\theta =1-cos^2\theta$
$3(1-cos^2\theta)+7cos\theta=3cos^2\theta$
Distribute and collect all terms on one side:
$6cos^2\theta-7cos\theta-3=0$
Factor and set each factor equal to 0:
$(2cos\theta-3)(3cos\theta+1)=0$
$2cos\theta-3=0$ ⇒ $theta=cos^{-1} \frac{3}{2}$
$3cos\theta+1=0$ ⇒ $theta=cos^{-1} \frac{-1}{3}$
The 2nd factor provides only possible answer 109.5 degrees

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2 years ago

What is the value of the expression shown right next to it -7 3/4 + 3 1/2

zubka84 [21]

Answer: $-4\frac{1}{4}$

Step 1

$-\frac{31}{4} + 3\frac{1}{2}$

Step 2

$-31/4+7/2$

Answer: $-17/4$

Divide

$-17/4=-4.25$

$-4.25=-4\frac{1}{4}$

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2 years ago

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Montano1993 [528]

Answer:

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What is 2÷8 , what will be the answer

AleksAgata [21]

The correct answer is .25

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How to do permutations?

PIT_PIT [208]

Permutations are written as nPx where n is the number of total choices possible and x is the number of choices that will be used. This is calculated as nPx = n! / (n-x)!.
Permutations represent the number of ways we can choose x objects from n possibilities where the order of selection matters.

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2 years ago