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8090 [49]
3 years ago
6

D=.5*a*t^2 - solving for a

t^2" align="absmiddle" class="latex-formula">
Mathematics
1 answer:
Leviafan [203]3 years ago
7 0

Answer:

\displaystyle a=\frac{d}{.5*t^2}

Step-by-step explanation:

<u>Equation Solving</u>

We are given the equation:

d=.5*a*t^2

It's required to solve it for a.

Swap sides to have the letter on the left side:

.5*a*t^2=d

Divide by .5*t^2:

\mathbf{\displaystyle a=\frac{d}{.5*t^2}}

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The mean of Holly's first six math quiz scores was 75%. After taking the seventh quiz, her mean score rose to 77%. What was Holl
alexandr1967 [171]

Let x represent Holly's score on 7th math quiz.

We have been given that the mean of Holly's first six math quiz scores was 75%. This means that the average on 1st 6 math quizzes is 75.

To find the total scores on 1st 6 math quizzes, we will multiply 75 by 6 that is 75\times 6 =450.

We will use average formula to find test scores on 7th math quiz.

\text{Average of 7 math quizzes}=\frac{\text{Sum of scores on 7 math quizzes}}{\text{7 quizzes}}

77=\frac{x+450}{7}

Let us solve for x.

77\cdot 7=\frac{x+450}{7}\cdot 7

539=x+450

x+450=539

x+450-450=539-450

x=89

Therefore, Molly's score on the 7th math quiz was 89.

8 0
3 years ago
Write an equation in point slope form for the line that passes through the given point and is perpendicular to the graph of the
USPshnik [31]

Answer:

y=-3x-8

Step-by-step explanation:

y=1/3x+9

slope is 1/3

perpendicular slope = m

(m)(1/3) = -1

m = -3

Point slope form

(y+2)/(x+2)=-3

y+2=-3x-6

y=-3x-8

4 0
3 years ago
Right in equation that shows the relationship between time and distance use your equation to find out how long it would take in
Naddika [18.5K]
This couldn't be answered!
4 0
3 years ago
Solve the system of equations. <br> 3x-4y=8 <br> 18x-5y=10
ipn [44]

Answer:

y = -2    x = 0

Step-by-step explanation:

1. 3x-4y = 8

2. 18-5y = 10

Multiply equation 1 by 6

3. 18x-24y = 48

Subtract equation 2 from equation 3

4. -19y = 38

        y = 38/-19

        y = -2

Sub y = -2 back into equation 1

      3x-4(-2) = 8

      3x + 8 = 8

      3x = 0

      x = 0/3

      x = 0

7 0
3 years ago
What is?...<br><br> 18 1/7 - 11 5/6
Daniel [21]
18+1/7-(11+5/6)
=18-11+1/7-5/6
=7+(6-5*7)/42
=7-29/42
=6+13/42
=6\frac{13}{42}
3 0
3 years ago
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