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2 years ago

Thank you!!!!!!!!!!!!!

Mathematics

1 answer:

SashulF [63]2 years ago

4 0

Answer:

$y=\frac{4}{3}x+7$

Step-by-step explanation:

$y=-\frac{3}{4}x+1$

Points: (12, 9)

Slope (m⊥): $\frac{4}{3}$

$y=\frac{4}{3}x+b$

$9 = \frac{4}{3}(12)+b$

$9 = 16 + b$

$b = 7$

$y=\frac{4}{3}x+7$

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Answer the following.

Oksana_A [137]

Answer:

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7 0

1 year ago

At a competition with 7 runners, medals are awarded for first, second, and

il63 [147K]

Answer:

Option A - Permutation; number of ways = 210

Step-by-step explanation:

Given : At a competition with 7 runners, medals are awarded for first, second, and third places. Each of the 3 medals is different.

To find : How many ways are there to award the medals?

Solution :

There are 7 runners but medals are three.

The first runner up got first medal as one is locked.

The second runner up got second medal as second is locked.

The third runner up got the third medal.

So, There is a permutation.

Number of ways to award the medals is $^7P_3$

We know, $^nP_r=\frac{n!}{(n-r)!}$

Substitute the values,

$^7P_3=\frac{7!}{(7-3)!}$

$^7P_3=\frac{7\times 6\times 5\times 4!}{4!}$

$^7P_3=210$

Therefore, Option A is correct.

Permutation; number of ways = 210

6 0

2 years ago

you spend at most $10 at the mall you want to buy a book that costs $6.75 and a cold drink how much can you spend on the drink?

Aneli [31]

You can make an equation: 6.75 + x = 10
6.75 is the amount you spend on the book, x is the amount you can spend on the drink, and 10 is the total cost.

Solve for x to find how much you can spend on the drink.
6.75 + x = 10
Subtract 6.75 from both sides to isolate x.

x = 3.25

You can spend $3.25 on the drink.

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3 years ago

In Lily's garden, there are 5 rose bushes the first year. Each year, she adds two new rose bushes. She

aniked [119]

Step-by-step explanation:

Let x = the number of years since the first year and let y = the total number of plants.

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Tulips: y = 20 – 3x

You can use elimination to solve.

y = 5 + 2x

(-)y = 20 – 3x

0 = -15 + 5x