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2 years ago

What is - 3x - ( - 2 - 4x ) if x equals 5

Mathematics

1 answer:

m_a_m_a [10]2 years ago

7 0

It would be 7 because -3 times 5

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Ohms Law states that in and electrical circuit E=IR, where E represents the pontial (in volts). I represents the current (in amp

gogolik [260]

Answer:

40 A

Step-by-step explanation:

E=I.R ==> I=E/R

if E=6 and R=0.15 then:

I= (6/0.15)= 40 A

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2 years ago

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A television newscaster from a 24-hour news station wants to estimate the number of hours per day its

svlad2 [7]

Answer:

B, using a sample of size 200

Step-by-step explanation:

just got it right

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2 years ago

Can somebody help me?

melisa1 [442]

All I know is that it is not a function it is okay for the domain x to repeat but not the y

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3 years ago

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If cot theta = 3/2, what is the value of csc theta?

Arturiano [62]

The value of csc theta is $\frac{3. 61}{2}$

<h3>How to determine the value</h3>

It is important to note that the ratio for cot is given as;

Cot theta = adjacent/opposite

cosec theta = hypotenuse/opposite

If cot theta = 3/2, then

Adjacent = 3

Opposite = 2

Using Pythagoras theorem, we have

Hypotenuse square = opposite + adjacent square

$H = \sqrt{2^2 + 3^2}$

$H = \sqrt{4 + 9}$

$H = 3. 61$

Cosec theta = $\frac{3. 61}{2}$

Thus, the value of csc theta is $\frac{3. 61}{2}$

Learn more about trigonometric ratio here:

brainly.com/question/13276558

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6 0

1 year ago

A certain test preparation course is designed to help students improve their scores on the GRE exam. A mock exam is given at the

Westkost [7]

Answer:

(0.25 ; 21.75)

8.7 (1 decimal place)

Step-by-step explanation:

Net change in scores : X = 6,14,12,23,0

Sample mean, xbar = (6 + 14 + 12 + 23 + 0) /5 = 55 /5 = 11

Sample standard deviation, s = 8.66 ( from calculator)

Sample standard deviation = 8.7( 1 decimal place)

Sample size, n = 5

The 95% confidence interval; we use t, because n is small

Tcritical at 95%, df = 4 - 1 = 3 ; Tcritical = 2.776

Xbar ± standard Error

Standard Error = Tcritical * s/√n

Standard Error = 2.776 * 8.66/√5

Standard Error = 10.751086 = 10.75

Lower boundary = (11 - 10.75) = 0.25

Upper boundary = (11 + 10.75) = 21.75

(0.25 ; 21.75)

The

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2 years ago