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3 years ago

Evaluate the algebraic expression for the given values of x = 3 and y = 4. Tx - 2y - 1 = I

Mathematics

1 answer:

faltersainse [42]3 years ago

8 0

Answer:

7 or -9, dependent on if 2y is or is not negative

Step-by-step explanation:

If 2y is NOT negative

2(4)-1=i

8-1=i

i=7

If 2y IS negative

-2(4)-1=i

-8-1=i

i=-9

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dezoksy [38]

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Step-by-step explanation:

A=πr^2

A= 3.14*2.4^2

A= 18.09yd

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3 years ago

The circumference of a tennis ball is 21 cm. How many inches is the circumference?

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8.26772

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3 years ago

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Find the value of x round to the nearest tenth

zzz [600]

Answer:

4.1 cm

Step-by-step explanation:

The segment marked x bisects the chord, so the triangle shown has legs x and 7.8, and hypotenuse 8.8.

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8.8² = x² +7.8²

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7 0

3 years ago

0.003 0.03 0.3 three more of them come after which are they ?

FromTheMoon [43]

0.3, 0.03,0.003
Because 0.3 is equivalent to 3/10
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4 0

3 years ago

After a college football team once again lost a game to their archrival, the alumni association conducted a survey to see if alu

valentina_108 [34]

Answer:

P-value for this hypothesis test is 0.00175.

Step-by-step explanation:

We are given that the alumni association conducted a survey to see if alumni were in favor of firing the coach.

A simple random sample of 100 alumni from the population of all living alumni was taken. Sixty-four of the alumni in the sample were in favor of firing the coach.

Let p = proportion of all living alumni who favored firing the coach

SO, Null Hypothesis, $H_0$ : p = 0.50 {means that the majority of alumni are not in favor of firing the coach}

Alternate Hypothesis, $H_A$ : p > 0.50 {means that the majority of alumni are in favor of firing the coach}

The test statistics that will be used here is One-sample z proportion statistics;

T.S. = $\frac{\hat p-p}{{\sqrt{\frac{\hat p(1-\hat p)}{n} } } } }$ ~ N(0,1)

where, $\hat p$ = sample proportion of the alumni in the sample who were in favor of firing the coach = $\frac{64}{100}$ = 0.64

n = sample of alumni = 100

So, test statistics = $\frac{0.64-0.50}{{\sqrt{\frac{0.64(1-0.64)}{100} } } } }$

= 2.92

Now, P-value of the hypothesis test is given by ;

P-value = P(Z > 2.92) = 1 - P(Z $\leq$ 2.92)

= 1 - 0.99825 = 0.00175

Therefore, the P-value for this hypothesis test is 0.00175.

4 0

3 years ago

Evaluate the algebraic expression for the given values of x = 3 and y = 4. Tx - 2y - 1 = I​

Evaluate the algebraic expression for the given values of x = 3 and y = 4. Tx - 2y - 1 = I