I can’t tell what the answer is

Answer:

A

Step-by-step explanation:

The velocity of a moving body is given by the equation:

[tex]v=t^2-5t+4 ,\, t\geq0[/tex]

Is the velocity is positive (v>0), then our object will be moving forwards.

And if the velocity is negative (v<0), then our object will be moving backwards.

We want to find between which interval(s) is the object moving backwards. Hence, the second condition. Therefore:

[tex]v<0[/tex]

By substitution:

[tex]t^2-5t+4<0[/tex]

Solve. To do so, we can first solve for t and then test values. By factoring:

[tex](t-4)(t-1)=0[/tex]

Zero Product Property:

[tex]t=1, \text{ and } t=4[/tex]

Now, by testing values for t<1, 1<t<4, and t>4, we see that:

[tex]v(0)=4>0,\, v(2)=-2<0,\,\text{ and } v(5)=4>0[/tex]

So, the (only) interval for which v is <0 is the second interval: 1<t<4.

Hence, our answer is A.

Answer:

[tex]16(a + 5b)(a - 5b)[/tex]

Step-by-step explanation:

[tex]16 {a}^{2} - 400 {b}^{2} [/tex]

[tex] = > {(4a)}^{2} - {(20b)}^{2} [/tex]

[tex] = > (4a + 20b)(4a - 20b)[/tex]

Taking 4 common from each expression gives,

[tex] = > 4(a + 5b) \times 4(a - 5b)[/tex]

[tex] = > 16(a + 5b)(a - 5b)[/tex]

Answer:

Answer below

Step-by-step explanation:

Rational:

36

7/16

81

Irrational:

120

48

pi

The rational numbers are √36, 7/16, and √81 = 9 the irrational numbers are √120, √48, and π.

It is defined as the numbers in all real numbers which cannot be represented as rational numbers, in other words the irrational number cannot be expressed in the form of p/q form.

A rational number is a sort of real number that has the form p/q and does not equal zero.

From the definition of rational and irrational number, we can identify the rational and irrational numbers as below:

Rational numbers:

√36 = 6

7/16

√81 = 9

Irrational number:

√120

√48

π

Thus, the rational numbers are √36, 7/16, and √81 = 9 the irrational numbers are √120, √48, and π.

Learn more about the irrational number here:

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9514 1404 393

Answer:

Step-by-step explanation:

We know that 4 is divisible by 4, and 14 is not. It has to do with 14 = 4 + 10, where 10 does not have 4 as a factor.

On the other hand, both 4 and 14 are divisible by 2. That's because 14 = 4 + 10, where 10 has 2 as a factor.

Joyce is incorrect; Nathan is correct—for the reasons shown above.

Answer:bbbbb

Step-by-step explanation:

Answer:

D) b + 6 = 17; b = 11

Step-by-step explanation:

Marco checked out a total of 17 items. It is given that 6 of them are movies. Set the equation. Let b = the amount of books checked out:

Whole = Part A + Part B

Whole = 17

Part A = movies = 6

Part B = books = b

17 = 6 + b

Isolate the variable, b. Note the equal sign, what you do to one side, you do to the other. Subtract 6 from both sides:

17 (-6) = 6 (-6) + b

b = 17 - 6

b = 11

D) b + 6 = 17; b = 11 is your answer.

~

Answer:

The last option

Step-by-step explanation:

The keep deleting my answer for no reason-

If there are 30 Apple computers and 7 of the computers have a specialized movie editing software, then that would be 23.3333333% of the Apple computers can be used for editing movies.

7/30x100= 700/30

700/30= 23.33%

Answer:

7.6

Step-by-step explanation:

19/5 = 3.8

So,

3.8 x the amount of gallons = the amount of litres

If we have 2 gallons, then,

3.8 x 2 = 7.6

Answer:

7.6

Step-by-step explanation:

Add it

Answer:

Option 1 is correct.

Step-by-step explanation:

Given two linear equations to us are ,

[tex]\qquad 3x + 7y = 10 \\\\ \qquad x + y = 2 [/tex]

And we have to find which system of linear equations have same answer .

On considering option (1) which is ,

[tex]\qquad 3x + 7y = 10 \\\\ \qquad 2x + 2y = 4 [/tex]

On taking the second equation in this ,

[tex]=> 2x + 2y = 4 \\\\=> 2( x + y ) = 4 \\\\=> x+y =\dfrac{4}{2}}\\\\\boxed{\red{\bf => x + y = 2 } }[/tex]

This is same as the second one given in the Question . And the first one is already same .

Hence option (1) is correct .

Answer:

In the explanation

Step-by-step explanation:

x = 0, y = -2*0+11=11

x = 1, y = -2*1+11=9

x = 4, y = -2*4+11=3

Hope this helps!

Answer:

60

Step-by-step explanation:

2.094= hummingbird

176= elephant

176-2.094= 173.906

approximately it will be 60

60 is closer to 173.906 than 600.

Answer:

Undefined

Step-by-step explanation:

Without option choices, I don't know what the answer could potentially be.

I got X=.5y, and while solving for Y, I came up with 4.5y=4.5y

It has been a few years since I have done this, but I believe the answer is undefined.

Answer:

30.1056

Step-by-step explanation:

dude just multiply it

duh.... ☠

Answer:

There are 7 days in a week so 7 times 4 = 28

Step-by-step explanation:

38 minus 28 = 10 days

It will take him 10 days

Answer:

each friend will receive 2 oatmeal bars and their will be 2 leftover.

Step-by-step explanation:

Answer:

2 3/4 in.

Step-by-step explanation:

66/6 = 11

11(1/4) = 11/4

11/4 = 2 3/4

Answer:

as a decimal 0.3 and the percent is 30%

Answer:

in decimal :0.3 and in percent:3/10/total*100%

Step-by-step explanation:

in decimal: 3/10

=0.3

in percent= 3/10/total*100%

Answer:

1

Step-by-step explanation:

1-2x ≥0

1≥ 2x

x≤1/2

only 1 i.e.,E is not included.

Answer:

16.2

Step-by-step explanation:

12*1.35=16.2

(can I get brainliest pls)

Answer:

195 miles

Step-by-step explanation:

Because if 1 inch= 30 miles you would have to multiply 30 by 6 because there is 6 inches, which is 180. The you have to look at the .5. .5 is half an inch, so you have to divide 30 by 2. you get 15 and then add 15 to the 180 and get 195.

I hope this helps!! Have a wonderful day!!! :D

Answer:

The value is  [tex]CP = 0.667[/tex]

Step-by-step explanation:

From the question we are told that

    The resistance is  [tex]R = 45 \pm 0.32\ \Omega[/tex]

   The mean is  [tex]\mu = 50 \Omega[/tex]

    The standard deviation is  [tex]\sigma = 0.16 \Omega[/tex]

Generally the upper  limit  of the resistance specified in the question(i.e  upper specification limit (USL )) is

        [tex]USL = 45 + 0.32 = 45.32 \ \Omega[/tex]  

Generally the lower  limit of the resistance specified in the question(i.e  lower specification limit (USL )) is

        [tex]LSL = 45 - 0.32 = 44.68 \ \Omega[/tex]

Generally the CP of the process of manufacturing the resistor is mathematically represented as  

         [tex]C P = \frac{ USL - LSL }{ 6 * \sigma }[/tex]

=>     [tex]CP = \frac{45.32 - 44.68 }{6 * 0.16}[/tex]

=>     [tex]CP = \frac{0.64 }{0.96}[/tex]

=>     [tex]CP = 0.667[/tex]

Answer:

option 2

Step-by-step explanation:

Answer:

The square root is 12.649.....

Answer:

1.x = 2 + 1.5y + 0.5z

2.x=3y=8z=22

3.x=4+y/3−2z/3

Step-by-step explanation:

mark brainliest please

Answer:

(p+,7)2 the number 2 is to be above 7 hope this helps

Answer:

p=43

Step-by-step explanation:

Answer:

d

Step-by-step explanation:

d

The solution to the equation is x = 21/4

What is Linear Equation in 1 variable?

The linear equations in one variable is an equation which is expressed in the form of ax + b = 0, where a and b are two integers, and x is a variable and has only one solution

Given data ,

The equation is x + 7/2 = 5x/3

Subtracting 7/2 on both sides , we get

x = 5x/3 - 7/2

x = ( 10x - 21 ) / 6

Multiplying 6 on both sides , we get

6x = 10x - 21

Adding 21 on both sides , we get

6x + 21 = 10x

Subtracting 6x on both sides , we get

4x = 21

Divide by 4 on both sides , we get

x = 21/4

Hence , the solution for  x + 7/2 = 5x/3 is x = 21/4

To learn more about linear equation in one variable click :

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Answer:

[tex]P(-2<Z<2)=95\%[/tex]

Step-by-step explanation:

From question we are told that

Sample mean [tex]\=x= 47[/tex]

Standard deviation [tex]\sigma =7[/tex]

Generally the  X -Normal is given as

      [tex]Z=\frac{x-\=x}{\sigma}[/tex]

      [tex]Z=\frac{x-47}{9}[/tex]

Analyzing the range

    [tex]P(47<x<65) = P(0< z<2.00)[/tex]

    [tex]P(47<x<65) = 95/2[/tex]

   [tex]P(47<x<65) = 47.5\%[/tex]

Mathematically

[tex]Z_1 =\frac{47-47}{9} =0[/tex]

[tex]Z_2 =\frac{65-47}{9} =2[/tex]

Empirical rule shows that

[tex]P(-2<Z<2)=95\%[/tex]

Answer:

x = 18

Step-by-step explanation:

Given that m is parallel to m, therefore:

(7x - 7)° = (6x + 11)° (alternate exterior angles are congruent)

Solve for x

7x - 7 = 6x + 11

7x - 6x = 7 + 11

x = 18