4 years ago

What's 3z - 4 and 2z + 5

Mathematics

1 answer:

Pavlova-9 [17]4 years ago

8 0

The answer to this question would b:
=5x−9

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Ryan practiced 43.2 minutes on Monday on his violin. Tuesday, he practiced 37.48 minutes. If he practiced a total of 114.34 minu

Nesterboy [21]

Answer:

Ryan practiced 33.66 minutes on Wednesday

Step-by-step explanation:

You do 43.2+37.48 and it equals 80.68

Then you do 114.34-80.68 which equals 33.66

6 0

3 years ago

12) Add the fractions, and simplify if possible.<br><br> (y+7)/(y^2-y-12) - 2/(y^2-9)

lianna [129]

Answer:

$\dfrac{y^2+2y-13}{(y-4)(y+3)(y-3)}$

Step-by-step explanation:

Given the expression

$\dfrac{y+7}{y^2-y-12}-\dfrac{2}{y^2-9}$

First, factor each denominator:

1. $y^2-y-12=y^2-4y+3y-12=y(y-4)+3(y-4)=(y-4)(y+3)$

2. $y^2-9=(y-3)(y+3)$

Now the expression is

$\dfrac{y+7}{(y-4)(y+3)}-\dfrac{2}{(y-3)(y+3)}$

Now, multiply the first numerator by (y-3) and the second by (y-4) and write the result as a fraction with denominator $(y-4)(y+3)(y-3):$

$\dfrac{(y+7)(y-3)-2(y-4)}{(y-4)(y+3)(y-3)}=\dfrac{y^2-3y+7y-21-2y+8}{(y-4)(y+3)(y-3)}=\dfrac{y^2+2y-13}{(y-4)(y+3)(y-3)}$

This fraction cannot be simplified more.

3 0

3 years ago

Find the amount of $8000 for 3 years,compounded annually at 5% per annum. Also ,find the compound interest

Triss [41]

Answer:

$9261

$1261

Step-by-step explanation:

Principal: $8000

Interest rate: 5% PA compounded annually

Time: 3 years

Sum = $8000*(1.05)³ = $9261
Interest = $9261 - $8000 = $1261

3 0

3 years ago

Find the sum and express it in simplest form. (-y + 5a - 4) + (-3y - a - 5)

netineya [11]

(-y + 5a - 4) + (3y - a - 5) is simplified to 2y + 4a - 11

3 0

3 years ago

Read 2 more answers

PLEASE HELP ITS A GRADE

devlian [24]

Answer:

1) A , 2) C , 3) D

Step-by-step explanation:

6 0

3 years ago