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3 years ago

13 POINTS SHOW WORK PLEASE

1 answer:

4 0

1,2,2,2,3,3,3,3,4,4,4,4,5 are all the test scores. if you add them all up, its 40, and there are 13 numbers in the data set, so you divide 40 by 13, and you get 3.07692 overscore, or 3 and 10/13

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What is the first step to solve the equation x^2-3=15

Otrada [13]

You will need to add 3 to each side.

x^2-3=15

+3 +3

x^2=12

and go from there

6 0

2 years ago

Read 2 more answers

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

4 0

3 years ago

The value of k is: please help im struggling

iVinArrow [24]

Answer:

E) 48

Step-by-step explanation:

Parallel lines divide the transversals proportionally.

Set proportions and solve for k:

k/24 = 64/32
k/24 = 2
k = 24*2
k = 48

Correct choice is E.

4 0

1 year ago

A lasagna recipe that serves 6 people calls for 1 pound of pasta 1.5pounds of meat 2 cups of cheese and 2 cups of sauce

Zinaida [17]

Please specify what your asking, and I'd be glad to help!

5 0

3 years ago

Rewrite the equations in the form ax^2+bx+c =0: -5x (x +6)=4(x-3) -10 4x^2-2x(3x+1)=5

Rainbow [258]

Step-by-step explanation:

this is my answer...sorry if I made any mistake

4 0

3 years ago