PLEASE ITS DUE TONIGHT!!!! Sally rides her bike to run errands. It takes her 18 minutes at 10 mph to get to her first stop. She spends 20 minutes riding at 12 mph to get to her second stop. It then takes her 15 minutes riding at 15 mph to get home. a. Draw a speed vs. time graph for the time that Sally spent riding her bike. b. How far did she travel?

Answers

Answer 1
Answer:

Answer:

The equation that relates distance, rate, and time is

       d  =  rt

Step-by-step explanation:


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5 with a exponent of 5
Determine the volume of the picture below. Please help
Its r9ght here just look at ut​
The answer to the problem 3(6 - 7) + 8 is called a ____________. A). difference. B). product. C). quotient. D). sum

Choose all the fractions that are in simplest form.4/26
8/21
6/19
9/10
10/22

Answers

4/26 can be simplified by 2. So, this is not the answer.
8/21 cannot be simplified. So, it is one of the answers.
6/19 cannot be simplified. So, it is one of the answers.
9/10 cannot be simplified. So, it is one of the answers.
10/22 can be simplified by 2. So, this is not the answer.

So, the fractions in simplest forms are 8/21, 6/19, and 9/10.

What are the values of the coefficients and constant term of 0 = 4 – 7x2 + x in standard form?a =
b =
c =

Answers

By definition, the standard parabola equation is given by:
 ax ^ 2 + bx + c = 0
 We then have the following quadratic equation:
 0 = 4 - 7x ^ 2 + x
 By rewriting the equation in its standard form, we have:
 - 7x ^ 2 + x + 4 = 0
 Comparing with the definition, we have that the values of the coefficients are given by:
 a = -7 b = 1 c = 4
 Answer:
 
The values of a, b and c are given by:
 
a = -7 b = 1 c = 4

Answer

a = -7 × 10⁰

b = 1 × 10⁰

c = 4 × 10⁰

Explanation

The general formula is; ax² + bx + c.

Where a ⇒ co-efficient of x²

           b ⇒ co-efficient of x

           c ⇒ The constant term

0 = 4 – 7x² + x This equation can be written in the form of  ax² + bx + c.

0 = 4 – 7x² + x = -7x² + x + 4 = 0

Comparing the values of a, b and c in the equation in standard form are;

a = -7 × 10⁰

b = 1 × 10⁰ and

c = 4 × 10⁰



A = 12, b = ?, c = 15a = ?, b = 7, c = 25
a = 8, b = 15, c = ?
a = 24, b = ?, c = 26

Answers

1: b=9
2: a= 24
3: c=17
4: b=10

Use a^2 + b^2 = c^2 to answer.
1: 12^2 (144) + b = 15^2 (225)
225-144 = 81
Square root 81 = 9
2: a + 49 = 625
625-49=576
Square root 576 = 24
3: 64 + 225 = 289
Square root 289 = 17
4: 576 + b = 676
676-576 = 100
Square root 100 = 10

Matrix Question PLEASE

Answers

make into matrix
\left[\begin{array}{ccc}2&1&1\n1&-3&-1\n4&5&2\end{array}\right] = \left[\begin{array}{ccc}-2\n14\n-4\end{array}\right]

accoring to cramer's rule
replace the y collum with eh constant collumn and find the detterminant

\left[\begin{array}{ccc}2&-2&1\n1&-14&-1\n4&-4&2\end{array}\right]
det
2 \left[\begin{array}{ccc}14&-1\n-4&2\end{array}\right]-(-2) \left[\begin{array}{ccc}1&-1\n4&2\end{array}\right]+1 \left[\begin{array}{ccc}1&14\n4&-4\end{array}\right]
dunno wat fraction is

pick last option

a pack of toy cars contains 12 cars. if Sylvia buys only packs of 12, what are two possible numbers of cars that she could buy

Answers

Answer: 36 and 24

Step-by-step explanation:

Hi, since a pack of cars has 12 cars, if she buys only packs, the possible number of cars that she could buy will be multiples of 12.

Multiples of 12: 12,24,36,48,60,72,84,96,108,120, etc

We can pick any multiple of 12.

For example if she buys 3 packs of cars:

3 x 12 = 36 cars

If she buys 2 pack of cars:

2x12=24 cars

Feel free to ask for more if needed or if you did not understand something.

24, 36, 48 etc.. just keep adding 12

A quarterly telephone bill consist of N$79.15 rental plus 4.7 cents for each dialled unit. Sales tax is added at 15%. What is the total bill for Mrs. Jones who used 915 dialled units?

Answers

Answer:

$140.48

Step-by-step explanation:

Let x represent dialed units.

We have been given that a quarterly telephone bill consist of $79.15 rental plus 4.7 cents for each dialed unit.

4.7 cents = $0.047

Cost of dialing x units would be 0.047x.

Total cost of dialing x units would be 0.047x+79.15.

Let us find cost of dialing 915 units by substituting x=915 in above expression.

0.047(915)+79.15

43.005+79.15

122.155

Now, we will find 15% of sales tax as:

122.155* (15)/(100)

122.155* 0.15

18.32325

Total bill: 18.32325+122.155=140.47825\approx 140.48

Therefore, Mrs. Jonas's bill would be $140.48.

$4.7 × 915 = 4300.5
$4300.5 + 79.15 = 4379.65
15% of 4379.65 = 656.9475
4379.65 + 656.9745 = 5036.6245
Mrs. Jones' Bill was $5036.63
(Rounded to the nearest 1/10)