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enyata [817]
3 years ago
15

Please help me solve this

Mathematics
1 answer:
goldfiish [28.3K]3 years ago
7 0

Answer:

Step-by-step explanation:

[g . h[(x) = -8(2x + 3) = -16x - 24

[h . g](x) = 2(-8x) + 3 = -16x + 3

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The function D(t)=18t2−130t gives the distance a car going a certain speed will skid in t seconds. Find the time it would take f
Assoli18 [71]

The time it will take for the car to skid for 150 feet is 8.23 seconds.

<h3>How to find the time the car will skid?</h3>

The function D(t) = 18t² − 130t gives the distance a car going a certain speed will skid in t seconds.

The time the it would take for the car to skid for 150 feet can be calculated as follows:

Therefore,

D(t) = 18t² - 130t

150 =  18t² - 130t

18t² - 130t - 150 = 0

divide by 3

9t² - 65t - 75 = 0

Hence,

t = 65 ± 5√277 / 18

t = 8.23425471586 or -1.01166666667

Hence,

t = 8.23 seconds.

Therefore, the time it will take for the car to skid for 150 feet is 8.23 seconds.

learn more on function here: brainly.com/question/13927655

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7 0
2 years ago
The ratio of the number of tests Jed passed this year to the number of tests he failed is 13:3. What percent of all tests Jed to
saul85 [17]

Answer:

18.75%

Step-by-step explanation:

Altogether he took 16 tests he failed 3 so we need to find 3 is what percent of 16.

5 0
3 years ago
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Please help!!! will pick brainliest
horrorfan [7]

9514 1404 393

Answer:

  • surface area: 456 cm²
  • volume: 408 cm³

Step-by-step explanation:

The surface area of the figure is the total of the areas of the two triangular bases and the three rectangular faces.

  SA = 2(1/2)(8 cm)(6 cm) + (17 cm)(6 cm + 8 cm  + 10 cm)

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  SA = 456 cm²

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The volume is the product of the area of the triangular base and the length of the prism.

  V = (1/2)(8 cm)(6 cm)×(17 cm) = (24 cm²)(17 cm)

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3 years ago
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If the original function () = 22 − 1 is shifted to the left 3 units to make the
Rom4ik [11]

A horizontal translation is expressed by transforming

f(x)\mapsto f(x+k)

If k is positive, the function is translated to the left. If k is negative, the function is translated to the right.

So, a 3-units left shift is given by k=3. So you have

f(x)=2x^2-1 \implies f(x+3)=2(x+3)^2-1

4 0
3 years ago
Order the numbers from least to greatest. <br><br>1 / 100, 1/4, and 0.2. ​
Kamila [148]

Answer:

\frac{1}{100}, 0.2, \frac{1}{4}

Step-by-step explanation:

First, find the values of the fractions in decimals.

\frac{1}{100} = 0.01

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So we have the numbers: 0.01, 0.25 and 0.2. Thus we can easily arrange them in ascending order.

0.01, 0.2, 0.25

Which, according to the question, will be:

<u></u>\frac{1}{100}<u>, 0.2, </u>\frac{1}{4}<u></u>

4 0
2 years ago
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