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antoniya [11.8K]

2 years ago

12

Jim bought the game system on sale for $195. Kaylen bought the same system at full price for $250. How much was the sale when ji

m bought the game system?

1 answer:

Arisa [49]2 years ago

3 0

The sale was 55$ because if you subtract those you get 55 which is the difference between the two

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Andrej [43]

Answer:

a) Josef jogging from A to B;

i. speed = 2 m/s

ii. velocity = 2m/s

a) a) Josef jogging from A to C;

speed = 1.9 m/s

ii. velocity = 2.2 m/s

Step-by-step explanation:

One major difference between speed and velocity is that speed is a scalar quantity, while velocity is a vector quantity.

a) Josef jogging from A to B;

distance = 300 m

time = 2.5 seconds = 150 seconds

i. his average speed = $\frac{distance}{time}$

= $\frac{300}{150}$

= 2 m/s

ii. his average velocity = $\frac{displacement}{time}$

= $\frac{300}{150}$

= 2 m/s

b) Josef jogging from A to C,

distance = 300 + 100 = 400 m

time = 2.5 + 1 = 3.5 minutes

= 210 seconds

i. his average speed = $\frac{distance}{time}$

= $\frac{400}{210}$

= 1.9 m/s

ii. his average velocity = $\frac{\sqrt{V_{1} ^{2} + V_{2} ^{2} } }{2}$

$V_{1} ^{2}$ = 4 m/s

$V_{2} ^{2}$ = 1.9 m/s

his average velocity = $\frac{\sqrt{4^{2} + 1.9^{2} } }{2}$

= 2.2 m/s

5 0

2 years ago

Devin has $30 on his bus card. Every time he rides a bus, $1.20 is deducted from the value on his card. The amount if money he h

vaieri [72.5K]

Answer:

y = -1.2x + 30

x = 22

x = 15

Step-by-step explanation:

<u>Part A</u>

Initially, Devin has $30. Then every time he rides the bus, $1.20 is taken away: y = 30 - 1.2x

Therefore, in slope-intercept form: y = -1.2x + 30

If he has $3.60 on his card, then y = 3.60, so substitute this into the above equation and solve for x:

3.60 = -1.2x + 30

subtract 30 from both sides: -26.4 = -1.2x

divide both sides by -1.2: 22 = x

Therefore Devin has ridden the bus 22 times if he has $3.60 on his card.

<u>Part B</u>

Rebecca: y = -1.4x + 33

To determine how many rides on the bus Devin and Rebecca would need to take to have the same amount of value of their bus card, simply equate the equations and solve for x:

Rebecca = Devin

y = y

-1.4x + 33 = 30 - 1.2x

subtract 33 from both sides: -1.4x = -3 - 1.2x

Add 1.2x to both sides: -0.2x = -3

Divide both sides by -0.2: x = 15

Therefore, Devin and Rebecca would both have to take 15 rides on the bus to have the same amount of value of their bus card.

6 0

1 year ago

Kaya used 7 cups of flour to bake 5 cakes how much flour on average did she put in each cake ? Write your answer as a decimal.

Ksju [112]

The answer would be 1.4, because 7 cups into 5 cakes equals 1.4.

Hope this helps ya

3 0

3 years ago

Read 2 more answers

Use scientific notation to estimate the number of inches in 1,225 miles

madam [21]

First, find the number of inches
<span>1225 Miles = 77616000 Inches

then, move the decimal to until you have a ones place. </span>
<span>77616000. the decimal for this number moves to the left SEVEN places.
you end up with 7.7616000
</span>
it will look like this:

7.8 * 10^7

I rounded to the .8 because you didn't state how many significant figures, but it could easily be 7.76 * 10^7

the exponent above the 10 will tell you how many places to move. to get back to your original number, move it back to the right seven places. Of course, you would have to place hold the numbers with 0s. If it were negative, you would move the decimal the opposite way.

6 0

2 years ago

Use the discriminant to determine the number and type of solutions the equation has.

White raven [17]

$x^2 + 8x + 12 = 0\\ \\a=1 , b= 8, c= 12 \\ \\ \Delta =b^2-4ac = 8^2 -4\cdot1\cdot12= 64-48= 16\\ \\\Delta > 0 \\ \\ Answer : \ C. \ \ two \ rational \ solutions$

5 0

2 years ago

Read 2 more answers