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vaieri [72.5K]
2 years ago
12

Let f(t)=4-3t^2. Evaluate f(t+1).

Mathematics
1 answer:
Ksivusya [100]2 years ago
3 0

Answer:

f=4-3t^2/t+1

Step-by-step explanation:

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Can someone do the one thats cirlced ty :D
vichka [17]

Answer:

5/3 or 10/12

Step-by-step explanation:

7 0
3 years ago
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I need to know this what is 4.75 as a fraction can someone help
WINSTONCH [101]

Answer:

4 \frac{3}{4}

Step-by-step explanation:

so we see a wholoe number "4", lets set that aside

we are left with 0.75 right

we can also write this as

75/100

we can simplify this by dividing 25 on both sides so it will becocme:

3/4

*Remember we have to bring the "4" we set aside earlier so final answer is*

4   and  3/4

8 0
3 years ago
What is a slope that runs through (1,1) and (1,8)
tatiyna

Answer:

0, undefined

Step-by-step explanation:

Slope=∆y/∆x

= 8-1 / 1-1

=7/0

= undefined

5 0
3 years ago
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HELP!!
tamaranim1 [39]
Question 1: <span>The answer is D. which it ended up being <span>0.9979
</span>
Question 2: </span>The expression P(z > -0.87) represents the area under the standard normal curve above a given value of z. What is P(z > -0.87)? Express your answer as a decimal to the nearest ten thousand

The expression P(z > -0.87) represents the area under the standard normal curve above a given value of z. What is P(z > -0.87)? Express your answer as a decimal to the nearest ten thousandth (four decimal places). So being that rounding it off would mean your answer would be = ?

Question 3: <span>Assume that the test scores from a college admissions test are normally distributed, with a mean of 450 and a standard deviation of 100. 
a. What percentage of the people taking the test score between 400 and 500?
b. Suppose someone receives a score of 630. What percentage of the people taking the test score better? What percentage score worse?
c. A university will not admit a student who does not score in the upper 25% of those taking the test regardless of other criteria. What score is necessary to be considered for admission? </span>z = 600-450 /100 = .5 NORMSDIST(0.5) = .691462<span><span> z = 400-450 /100 = -.5 NORMSDIST(-0.5) = .30854

P( -.5 < z <.5) = .691462 - .30854 = .3829 Or 38.29%
Receiving score of 630:
z = 630-450 /100 = 1.8 NORMSDIST(1.8) = .9641
96.41% score less and 3.59 % score better
upper 25%
z = NORMSINV(0.75)= .6745
.6745 *100 + 450 = 517 Would need score >517 to be considered for admissions </span><span>
Question 4: </span>The z-score for 45cm is found as follows:</span>
Reference to a normal distribution table, gives the cumulative probability as 0.0099.
<span>Therefore about 1% of newborn girls will be 45cm or shorter.</span>
6 0
3 years ago
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What is the slope?<br> y ≥ 1x + 1
adelina 88 [10]

y ≥ 1x+1

y ≥ x+1

Two points that are on the graph of y ≥ x+1 are (0,1)and (1,2).

Use the equation for finding the slope.

\frac{y_2-y_1}{x_2-x_1}

\frac{2-1}{1-0}=\frac{1}{1}=1

The slope is 1.

6 0
3 years ago
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