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mafiozo [28]
3 years ago
13

The formula

Mathematics
1 answer:
son4ous [18]3 years ago
4 0

Answer:

The truck travel must to have a constant speed of 22.06\ ft/sec

Step-by-step explanation:

we have

d=1.3t^{2}+t+2

where

d expresses a car's distance in feet

t is the number of seconds

<em>Find the distance d for t=8 sec</em>

d=1.3(8)^{2}+8+2=93.2\ ft

<em>Find the distance d for t=8.2 sec</em>

d=1.3(8.2)^{2}+8.2+2=97.612\ ft

The total distance in this interval of 0.2 sec is

97.612-93.2=4.412\ ft

<em>Find the speed of the car</em>

Divide the total distance by the time

4.412/0.2=22.06\ ft/sec

therefore

The truck travel must to have a constant speed of 22.06\ ft/sec

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Write the quadratic equation whose roots are -2 and 1, and whose leading coefficient is 4 .
Kaylis [27]

Answer: the equation is

4x^2 + 4x - 12

Step-by-step explanation:

A quadratic equation is an equation in which the highest power of the unknown is 2.

The general form of a quadratic equation is expressed as

ax^2 + bx + c

Where

a is the leading coefficient

c is a constant

Assuming we want to write the quadratic equation in x, from the information given, the roots which are given are -2 and 1 and the leading coefficient is 4.

Therefore, the linear factors of the quadratic equation will be (x+2) and (x-1)

the equation becomes

(x+2)(x-1)

= x^2 - x +2x - 3

= x^2 + x - 3

Given a leading coefficient of 4, we will multiply the quadratic expression by 4. It becomes

4(x^2 + x - 3)

= 4x^2 + 4x - 12

7 0
3 years ago
Is the question ''How many cars were sold each day this month'' statistical or not?
kifflom [539]
2,000 cars............
5 0
4 years ago
X/3/9=5/9 SOLLVE FOR X!!!!!!!
Zanzabum

Answer:

x = 15

Step-by-step explanation:

x/3/9 = 5/9

x : 3 : 9 = 5/9

x×1/3×1/9 = 5/9

x/27 = 5/9

x = 5×27/9

x = 5×3

x = 15

5 0
4 years ago
a team played 18 games during the season. the team lost 8 games and won the rest. what is the ratio of wins to losses
Westkost [7]

8 out of 18 games. That 8/18 simplify to 4/9 ?

7 0
3 years ago
4. A cash register contains $10 bills and $20 bills with a total value of $340. If there are 23 bills total, then how many of ea
Anastaziya [24]

There are total 17bills of $20 dollars and 6 for $10 bills.

We get the answer of $20 bills by dividing 340 and 20 then we get 17 then subtract the value from total bills than you get 6 bills for $10 dollars

6 0
3 years ago
Read 2 more answers
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