The driver of a car traveling along a straight, flat road applies the brakes, which produce a constant acceleration ofspace a (t )thin space equals space minus 20 space f t divided by s e c squared. If the car is traveling at 80 feet per second when the driver applies the brakes, how far does the car travel between the time the brakes are applied and the time the car comes to a stop

Answer:

The answer is true

Step-by-step explanation:

To find the area of a trapezoid, multiply the sum of the bases (the parallel sides) by the height (the perpendicular distance between the bases), and then divide by 2

Answer:

462cm^3

Step-by-step explanation:

Volume of a pyramid = 1/3 × base area × height

Now the base is a rectangle with sides 7cm and 18cm; area of base is;

7 × 18 = 126cm^2

Therefore volume =

1/3 × 126 × 11 = 42 × 11= 462cm^3

Answer:

6, -6, 6, -6 and 6.

Step-by-step explanation:

Given the recursion formula for a sequence

[tex]a_{n+1}=-a_n\\$where a_1=6\\[/tex]

The first five terms of the sequence are:

[tex]\text{First Term, }a_1=6\\$Second Term, a_2=a_{1+1}=-a_1=-6\\$Third term, a_3=a_{2+1}=-a_2=6\\$Fourth term, a_4=a_{3+1}=-a_3=-6\\$Fifth term, a_5=a_{4+1}=-a_4=6[/tex]

Therefore, the first five terms of the sequence:

[tex]a_1,a_2,a_3,a_4,a_5=6, -6, 6, -6$ and 6.[/tex]

Answer:

84

Step-by-step explanation:

Basically the ratio was multiplied by 12 to get the number of boys so you do the same to the other one.

Answer:

number of boys+number of girls=48boys+36girls=84members

Step-by-step explanation:

FIRST WE FIND THE NUMBER OF GIRLS BY STATISTICAL METHOD

4:3=48:x

4/3=48/x

By cross multiplication

4×x=48×3

4x=144

Dividing 4 on both sides

4x/4=144/4

x=36=number of girls

Answer:

The horizontal distance from the center is 49.3883 feet

Step-by-step explanation:

The equation of an ellipse is equal to:

[tex]\frac{x^2}{a^{2} } +\frac{y^2}{b^{2} } =1[/tex]

Where a is the half of the wide, b is the high of the ellipse, x is the horizontal distance from the center and y is the height of the ellipse at that distance.

Then, replacing a by 106/2 and b by 33.9, we get:

[tex]\frac{x^2}{53^{2} } +\frac{y^2}{33.9^{2} } =1\\\frac{x^2}{2809} +\frac{y^2}{1149.21} =1[/tex]

Therefore, the horizontal distances from the center of the arch where the height is equal to 12.3 feet is calculated replacing y by 12.3 and solving for x as:

[tex]\frac{x^2}{2809} +\frac{y^2}{1149.21} =1\\\frac{x^2}{2809} +\frac{12.3^2}{1149.21} =1\\\\\frac{x^2}{2809}=1-\frac{12.3^2}{1149.21}\\\\x^{2} =2809(0.8684)\\x=\sqrt{2809(0.8684)}\\x=49.3883[/tex]

So, the horizontal distance from the center is 49.3883 feet

Answer:

B. [[0,4]

   [-6,1]

  [3,-4]]

Step-by-step explanation:

If you multiply the matrices, you get the answer.

Answer:

Step-by-step explanation:

Find the exact frequency table in the diagram attached. x is the midpoint of the interval f is the frequency. Using the formula below to find the mean;

[tex]\overline x = \frac{\sum fx}{\sum f} \\[/tex]

[tex]\sum fx = (42*2)+(47*7)+(52*9)+(57*5)+(62*1)\\\sum fx = 84+329+468+285+62\\\sum fx = 1,228\\\sum f = 24\\\\\overline x = \frac{1,228}{24} \\\overline x = 51.17^{0} F[/tex]

The mean of the frequency distribution compare to the actual mean of 50.7°F is 51.2°F(to nearest tenth)

Answer:

3

Step-by-step explanation:

6/4 (divide numerator and denominator each by 2)

= 3/2

= 3 x (1/2)

hence there are 3  halves in 6/4

Answer:

3

Step-by-step explanation:

To find out, we need to divide.

[tex]\frac{6}{4}[/tex] ÷ [tex]\frac{1}{2}[/tex]

When dividing fractions, you multiply the 1st term by the second term's reciprocal.

so

[tex]\frac{6}{4}[/tex] x 2

If you simplify you get [tex]\frac{6}{2}[/tex] or 3.

Answer:

The answer is D.

Step-by-step explanation:

First, you have to convert the mixed number into improper fraction :

[tex]6 \frac{2}{3} [/tex]

[tex] = \frac{3 \times 6 + 2}{3} [/tex]

[tex] = \frac{20}{3} [/tex]

Next, you can divide it by cutting out the common factor :

[tex]15 \div \frac{20}{3} [/tex]

[tex] = 15 \times \frac{3}{20} [/tex]

[tex] = 3 \times \frac{3}{4} [/tex]

[tex] = \frac{9}{4} [/tex]

[tex] = 2 \frac{1}{4} [/tex]

The value of the expression after divide is,

⇒ 2 1/4

Division method is used to distributing a group of things into equal parts. Division is just opposite of multiplications. For example, dividing 20 by 2 means splitting 20 into 2 equal groups of 10.

Given that;

The expression is,

⇒ 15 divided by 6 2/3

Now,

We can divide as;

⇒ 15 divided by 6 2/3

⇒ 15 ÷ 6 2/3

⇒ 15 ÷ 20/3

⇒ 15 × 3/20

⇒ 45/20

⇒ 9/4

⇒ 2 1/4

Learn more about the divide visit:

https://brainly.com/question/28119824

#SPJ2

Answer:

  D'(-2, 5), E'(3, 5), F'(3, 3), G'(-2, 3)

Step-by-step explanation:

Adding (-1, 2) to each of the coordinates gives ...

  D +(-1, 2) = (-1-1, 3+2) = D'(-2, 5)

  E +(-1, 2) = (4-1, 3+2) = E'(3, 5)

  F +(-1, 2) = (4-1, 1+2) = F'(3, 3)

  G +(-1, 2) = (-1-1, 1+2) = G'(-2, 3)

Answer:

The answer is B.

Step-by-step explanation:

I got it correct on Edge 2020

Answer:

0.9 grams

Step-by-step explanation:

The point estimate for the average weight of Soap Bar A is:

[tex]A=\frac{121+122+124+ 123+ 120+ 124+ 121+ 121+ 121+ 123+ 120}{11}\\A=121.82\ grams[/tex]

The point estimate for the average weight of Soap Bar B is:

[tex]B=\frac{121+120+122+ 119+ 121+ 122+ 122+ 120+ 120 +121+ 122+123+119}{13}\\B=120.92\ grams[/tex]

Therefore, the point estimate for the true difference between the given population means is:

[tex]Dif = A-B\\Dif = 121.82-120.92\\Dif=0.9\ grams[/tex]

The point estimate for the difference is 0.9 grams.

Answer:

The mean and standard deviation of the corrected pH measurements are 6.63 and 3.8025 respectively.

Step-by-step explanation:

We can correct the values of the mean and standard deviation using the properties of the mean and the variance.

To the original value X we have to add 0.2 and multiply then by 1.3 to calculate the new and corrected value Y:

[tex]Y=1.3(X+0.2)[/tex]

The mean and standard deviation of the original value X are 4.9 and 1.5 respectively.

Then, we can apply the properties of the mean as:

[tex]E(Y)=E(1.3(X+0.2))=1.3E(X+0.2)=1.3E(X)+1.3*0.2\\\\E(Y)=1.3E(X)+0.26\\\\E(Y)=1.3*4.9+0.26=6.37+0.26=6.63[/tex]

For the standard deviation, we apply the properties of variance:

[tex]V(Y)=V(1.3(X+0.2))\\\\V(Y)=1.3^2\cdot V(X+0.2)\\\\V(Y)=1.69\cdot V(X)\\\\V(Y)=1.69\cdot 1.5^2=1.69\cdot 2.25=3.8025[/tex]

The properties that have been applied are:

[tex]1.\,E(aX)=aE(X)\\\\ 2.\,E(X+b)=E(X)+b\\\\3.\,V(aX)=a^2V(X)\\\\4.\,V(X+b)=V(X)+0[/tex]

Answer:

[tex] \frac{19}{20} [/tex]

Step-by-step explanation:

[tex] \frac{7}{10} + \frac{1}{4} \\ \frac{14 + 5}{20} \\ = \frac{19}{20} [/tex]

hope this helps

brainliest appreciated

good luck! have a nice day!

Answer:

m>n

Step-by-step explanation:

The value of m

The sum of the angles of a triangle are 180

50+30 + m = 180

m = 180-50-30

m = 100

The value of n

The sum of the angles of a triangle are 180

28 + 58+n = 180

n = 180-58-28

n=94

m>n

Answer:

15

Step-by-step explanation:

The pattern is going by 15 because 10+15=25 and then continue going.

Answer:

15 is the answer

Step-by-step explanation:

Answer:I think it -5 wait lemme check answer again

The solution to the inequality will be greater than or equal to –5. Then the correct option is B.

Inequality is defined as an equation that does not contain an equal sign. Inequality is a term that describes a statement's relative size and can be used to compare these two claims.

The inequality is given below.

3(x – 4) ≥ 5x – 2

Simplify the equation, then the solution to inequality will be

3(x – 4) ≥ 5x –2

3x – 12 ≥ 5x –2

5x – 3x ≤ – 12 + 2

2x ≤ – 10

x ≤ –5

The solution to the inequality will be greater than or equal to –5.

Then the correct option is B.

The correct equation is 3(x – 4) ≥ 5x – 2.

More about the inequality link is given below.

https://brainly.com/question/19491153

#SPJ6

Answer:

The experimental probability that the next contestant will qualify for the bonus round is [tex]\frac{7}{10}[/tex]

Step-by-step explanation:

The experimental probability of an outcome is the number of trials in which the desired outcome happened divided by the total number of trials.

What is the experimental probability that the next contestant will qualify for the bonus round?

14 contestants qualified out of 14+6 = 20 contestants. So

[tex]p = \frac{14}{20} = \frac{7}{10}[/tex]

The experimental probability that the next contestant will qualify for the bonus round is [tex]\frac{7}{10}[/tex]

Answer:

[tex] E(X) = 7*0.18 +9*0.08 +11*0.09 +15*0.08 +17*0.41 =13.22[/tex]

And we can find the second moment with this formula:

[tex] E(X^2) = \sum_{i=1}^n X^2_i P(X_i)[/tex]

And replacing we got:

[tex] E(X^2) = 7^2*0.18 +9^2*0.08 +11^2*0.09 +15^2*0.08 +17^2*0.41 =189.72[/tex]

And we can find the variance like this:

[tex] Var(X) = E(X^2) -[E(X)]^2= 189.72- (13.22)^2 =14.9516[/tex]

And the deviation would be:

[tex] Sd(X)= \sqrt{14.9516}= 3.867[/tex]

Step-by-step explanation:

For this case we have the following dataset given:

Payment     $7     $9     $11    $13    $15  $17

Probability 0.18  0.08  0.09  0.16  0.08   0.41

For this case we can calculate the mean with this formula:

[tex] E(X) = \sum_{i=1}^n X_i P(X_i)[/tex]

And replacing we got:

[tex] E(X) = 7*0.18 +9*0.08 +11*0.09 +15*0.08 +17*0.41 =13.22[/tex]

And we can find the second moment with this formula:

[tex] E(X^2) = \sum_{i=1}^n X^2_i P(X_i)[/tex]

And replacing we got:

[tex] E(X^2) = 7^2*0.18 +9^2*0.08 +11^2*0.09 +15^2*0.08 +17^2*0.41 =189.72[/tex]

And we can find the variance like this:

[tex] Var(X) = E(X^2) -[E(X)]^2= 189.72- (13.22)^2 =14.9516[/tex]

And the deviation would be:

[tex] Sd(X)= \sqrt{14.9516}= 3.867[/tex]

Answer:

2,322,775

Step-by-step explanation:

Given a1 = 4 and ai =ai-1 +11

when i = 2

a2 = a2-1+11

a2 = a1+11

a2 = 4+11

a2 = 15

when i = 3

a3 = a2+11

a3 = 15+11

a3 = 26

The sequence formed by a1, a2, a3... is am arithmetic sequence as shown;

4, 15, 26...

Sum of nth term of an arithmetic sequence = n/2{2a+(n-1)d}

a is the first term = 4

d is the common difference = 15-4 = 26-15 = 11

n is the number of terms.

Since we are to find the sum of the first 650 terms in the sequence, n = 650

S650 = 650/2{2(4)+(650-1)11}

S650 = 325{8+(649)11}

S650 = 325(8+7,139)

S650 = 325×7147

S650 = 2,322,775

Answer:

2.555555

Step-by-step explanation: Nine times 2 is 18. When we subtract 18 from 23 we get 5. In the quotient we add a decimal point and add a zero to 5 which is 50. Nine times 5 is 45. When we subtract 45 from 50 we get 5 again and again and again . In decimal form it is 2.5555555.

Answer:

2.55 Hope this helps!

Answer:

11

Step-by-step explanation:

I looked it up for you so no problem

Answer: 11 and 22

Step-by-step explanation:

We can start by making an equation. Since we know we have two numbers added to make 33. One number can be represented by x and the other is half of this x number so we can write this equation.

33 = 1/2x + x

Now we can combine like terms.

33 = 3/2x

Then either multiply by the reciprocal or divide by 1.5 on both sides.

x = 22

And the other number is half this number so divide by 2.

y = 11

Answer:

(0,0)

Step-by-step explanation:

If a point satisfies both functions, they must be equal to each other. Thus, we have:

[tex]f(x)=g(x)[/tex]

[tex]2x=3x[/tex]  

The only x that satisfies this is 0.

Therefore, the y is also zero.

The point is (0,0).

Alternatively, you can also visualize the graphs. The only point where the graphs will touch is the origin point or (0,0).

Answer:

The answer is x ≤ 2.

Step-by-step explanation:

Firstly, you have to move the unrelated term to the other side :

[tex] - 9 \leqslant 7 - 8x[/tex]

[tex] - 9 - 7 \leqslant - 8x[/tex]

[tex] - 16 \leqslant - 8x[/tex]

Next you can solve it :

[tex] - 8x \geqslant - 16[/tex]

[tex]x \leqslant - 16 \div - 8[/tex]

[tex]x \leqslant 2[/tex]

*Remember to change the symbol, when it is dividing by a negative value

Answer:

two to the thrid power is 8.

Step-by-step explanation:

2^3= 8

Answer:

I'm not sure what exactly the question is but it should be 8

Step-by-step explanation:

2^3

2×2×2=8

Answer:

As you know, a year has around 365 + 1/4 days.

This means that in two years, we have:

365 + 356 + 1/4 + 1/4 = 730 + 1/2

and so on.

adding this up, when we have 4 years we have a full day extra, this is:

1460 + 1

When we divide 1461 by 4, we have 365 with a surpass of 1.

The rule used to keep the calendar in sync with this extra day is adding an extra day to each fourth year.

So each fourth year, we have an extra day in Februray (the Februray 29th), this is called a bisiest year.

The "math rule" used to know if a year is leap or not is:

if a year is not divisible by 4, then it is a common year

else if the year is not divisible by 100 then it is a leap year,

else if the year is not divisible by 400, then it is a common year

if not, the year is a leap year.

Where "year" represents the number of the year.

Answer:

The low tide, when it is 10 feet below the high tide would be at 7am and 7pm

Step-by-step explanation:

Answer: c

Step-by-step explanation: 4/1 x 1/3 = 4/3

｡☆✼★ ━━━━━━━━━━━━━━  ☾  

Tangents that meet at a point are equal in length so DB = CB

Let's form an equation:

10x + 16 = 5x + 20

- 16 from both sides

10x = 5x + 4

- 5x from both sides

5x = 4

/5 on both sides

x = 4/5

Sub this value into the expression for CB

5(4/5) + 20 = 24

Thus, the answer is option D. 24

Have A Nice Day ❤    

Stay Brainly! ヅ    

- Ally ✧    

｡☆✼★ ━━━━━━━━━━━━━━  ☾

Answer:

4TH OPTION

Step-by-step explanation:

IN A CIRCLE , TANGENT DRAWN FROM AN EXTERNAL POINT TO THE CIRCLE ARE EQUAL.

ie BD = BC

ie 10x +16 = 5x+20

10x - 5x = 20 -16

5x = 4

x = 4/5

therfore BC = 5x+20 = 5*4/5 +20

BC= 4+20

BC = 24

HOPE IT HELPS...

Yes, B. Rising action is correct