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2 years ago

Can someone pls answer this for me Ill mark brainlist if its correct :(((

Mathematics

1 answer:

suter [353]2 years ago

6 0

Step-by-step explanation:

sorry to break it to you but there is no question

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An=−5n+90 i dont know it

olga2289 [7]

I am guessing your problem should read...

A) n = -5n + 90 (isolate the variables by adding 5n to each side)
   +5n +5n
   6n = 90 (since we don't want to know what 6n's are worth, divide by 6)
6n/6 = 90/6
   n = 15

3 0

3 years ago

Find the direction to the nearest degree for the vector a=<-8,4>

siniylev [52]

Answer & Explanation:

To find the direction cosines of the vector a is need to divided the corresponding coordinate of vector by the length of the vector. The coordinates of the unit vector is equal to its direction cosines. Property of direction cosines. The sum of the squares of the direction cosines is equal to one.

6 0

3 years ago

A grocery store has a sale on apples. Shoppers can buy 3 bags of apples for $5. Each bag contains 6 apples. Which of the followi

frozen [14]

Answer:

Step-by-step explanation:

6 0

3 years ago

Read 2 more answers

Lexi has already jarred 19 liters of jam and will jar an additional 9 liters of jam every day. How many days does lexi need to s

Marysya12 [62]

Answer:

Lexi need to spend <u>6 days</u> to fill the jar with 73 liters of jam.

Step-by-step explanation:

Given:

amount of jam already had in jar =19 liters

amount of jam added each day in jar = 9 liters.

Total number of jam to be needed in jar = 73 liters.

We need to find the number of days required to jar 73 liters.

Solution:

To find the number of days required to jar 73 liters will be equal to amount of jam already had in jar plus amount of jam added each day in jar multiplied by number of days.

framing in equation form we get;

$19+9x= 73$

Subtracting both side by 19 we get;

$19+9x-19=73-19\\\\9x = 54$

Dividing both side by 9 we get;

$\frac{9x}{9}=\frac{54}{9}\\\\x=6\ days$

Hence Lexi need to spend <u>6 days</u> to fill the jar with 73 liters of jam.

5 0

3 years ago

Ryan and Marie had some marbles. if Ryan lost `15 marbles, he would have 4 times as many marbles as Marie. If Ryan lost 75 marbl

vaieri [72.5K]

Ryan's marbles = x
Marie has 4 times less marbles then Ryan would have if he lost 15 marbles (it means he would have x-15)
So, Marie marbles = (x-15):4
If Ryan lost 75 marbles (it means he would have x-75), he would have 1 1/2 times as many marbles as Marie.

We got an equation: $x-75=1\frac{1}2\cdot\frac{x-15}{4}$

          $x-75=\frac{3}2\cdot\frac{x-15}{4}$

Multiply both sides by 8:     $8x-8\cdot75=3\cdot(x-15)$

      $8x-600=3x-45$

Add 600 and subtract 3x on both sides:    $5x=555$

Divide both sides by 5:    $x=111$

Answer: Ryan have 111 marbles.

5 0

3 years ago