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3 years ago

(z-24) divided by 8+2

Mathematics

1 answer:

hjlf3 years ago

7 0

Answer:

z=-24

Step-by-step explanation:

(z-24)/8+2

(z-24)/10

((z-24)/10)10 Multiply both sides by 10

10(z-24) Distribute

10z-240 Divide both sides by 10

z=-24

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brittany's first four quiz grades are 78 81 69 and 94 what would her next quiz score need to be in order to have a mean score of

mina [271]

The mean is the sum of all numbers divided by the number of numbers. We can set up an equation:

$\sf\dfrac{78+81+69+94+x}{5}=79$

Where 'x' is the next quiz score she need. Solve for 'x'. Multiply 5 to both sides:

$\sf 78+81+69+94+x=395$

Add:

$\sf 322+x=395$

Subtract 322 to both sides:

$\boxed{\sf x=73}$

So her next quiz score needs to be 73 in order to have a mean score of 79 on all her quizzes.

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4 years ago

Read 2 more answers

Katie is To Receive 2-1/2 drops of medication every 6hours. How much Medication will she receive in 24 hours?

bezimeni [28]

First, how many periods of 6 hours are in 24 hours? 24 / 6 = 4.
So every 6 hours, Katie needs 2.5 drops.
Seeing as there are 4 periods of 6 hours in 24 hours, you would do 2.5 x 4.
Katie will receive 10 drops of medication in 24 hours.

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3 years ago

a non-regular Pentagon has 3 sides that are the same length. the 4th side is 6 inches longer than the length shared by 3 of the

OlgaM077 [116]

Answer:

15 inches

Step-by-step explanation:

Okay, so we know a pentagon has 5 sides total. We also know that 3 of the sides are the same length, so let's assume those sides are n length.

n + n + n + _ + _ = 4ft 11in

The fourth side is an inch less than n.

n + n + n + (n - 1inch) + _ = 4ft 11in

The last side is 6inches more than n.

n + n + n + (n - 1inch) + 9n + 6inches) = 4ft 11in

Now that we have out equation, lets convert the 4ft 11in into just inches. 4ft = 4 x 12 inches (48 inches). Then add the 11inches and you get 59.

Now our equation is in terms of inches,

we can combine the 3 ns to 3n.

3n + (n-1) + (n +6) + 59

Then we combine all the ns and get 6n -1 +6 =59

Simplify to 6n +5 =59

then to 6n = 54

Then to n = 9.

Since we are looking for the longest side, you have to substitute n in for the side that would have the longest measure, n + 6.

9 + 6 = 15.

15 inches is your answer.

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3 years ago

The median of an isosceles triangle is the same segment in the triangle as the _______.

hoa [83]

Answer: Altitude!!!

Step-by-step explanation:

APEX

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3 years ago

Using complete sentences, explain how to completely factor: 2x2 - 6x - 36

garri49 [273]

I hope this helps you

2. (x^2-3x-18)

2 (x-6)(x+3)

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3 years ago