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3 years ago

Can you help me on question 15 I would really appreciate it !

Mathematics

2 answers:

Karolina [17]3 years ago

7 0

Answer:

Step-by-step explanation:

Total of 3 T-shirts is 25.5$

=> 25.50$ / 3 T-Shirts = 8.50 $ per shirt

liubo4ka [24]3 years ago

3 0

Answer: $8.50

Explanation:

So if Rachael paid $25.50 for 3 shirts you will divide 25.50 by 3 and your answer will be 8.50. Hope this helps

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ms. wilson draws a model of the factorization of a polynomial with integer factors. her model is partially complete. which equat

Oliga [24]

I'll just factor the above equation.

x² + 18x + 80

x² ⇒ x * x
80
can be:
1 x 80
2 x 40
4 x 20
5 x 16
8 x 10 Correct pair

(x+8)(x+10)
x(x+10) +8(x+10) ⇒ x² + 10x + 8x + 80 = x² + 18x + 80

x+8 = 0
x = -8

x+10 = 0
x = -10

x = -8

(-8)² + 18(-8) + 80 = 0
64 - 144 + 80 = 0
144 - 144 = 0
0 = 0

(-10)² + 18(-10) + 80 = 0
100 - 180 + 80 = 0
180 - 180 = 0
0 = 0

I think the algebra tiles will not be a good tool to use to factor the quadratic equation because the equation is not a perfect square quadratic equation.

4 0

3 years ago

Read 2 more answers

Judy built a rectangular patio that is 9 meters wide and has a perimeter of 40 meters what is the length of Judy’s patio

loris [4]

Hi !

<span><u>Judy built a rectangular patio that is 9 meters wide and has a perimeter of 40 meters what is the length of Judy’s patio ?</u></span>

$l=9\;m\\L=x$

$So\;Perimeter=2(9+x)=18+2x=40\;m\\\\18+2x=40\\2x=40-18\\2x=22\\\\x=\dfrac{22}{2}\\\\\boxed{x=L=11}$

The lenght of Judy's Patio is 11 meters.

3 0

3 years ago

PLEASE HELP

Svetradugi [14.3K]

Answer:

= 2x²( 2x+ 1) + 2x

= 2x (2x² + x + 1)

Step-by-step explanation:

Given in the question two functions,

f ( x ) = 9x³ + 2x² − 5x + 4

g ( x ) = 5x³ − 7 x + 4

To find,

f ( x ) − g ( x )

Substitute each functions

= 9x³ + 2x² − 5x + 4 - ( 5x³ − 7 x + 4 )

Remove parentheses

= 9x³ + 2x² − 5x + 4 - 5x³ + 7 x - 4

Combine like terms and add them up

= 4x³ + 2x² + 2x

Factorise

= 2x²( 2x+ 1) + 2x

= 2x (2x² + x + 1)

So the final answer in factored form is 2x²( 2x+ 1) + 2x or 2x (2x² + x + 1)

This can't be further factorise because answer will be in complex numbers

8 0

3 years ago

What is the sum of 4 1/12 + (-5 1/3)?

MAVERICK [17]

-5/6. Hope this helps.

8 0

3 years ago

Read 2 more answers

Ralph chase plans to sell a piece of property for $145000. He wants the money to be paid off in two ways a short term note at 11

Ymorist [56]

Given :

Price of property , P = $145000 .

Money paid off in two ways a short term note at 11% interest and a long term note at 8% interest.

Total interest , I = $13850 .

To Find :

The amount of each note .

Solution :

Let , x money is paid off in 11 % interest rate and ( 145000-x) in 8% interest rate.

Therefore , their sum of interest in mathematics is given by :

$\dfrac{11x}{100}+\dfrac{8(145000-x)}{100}=13850\\\\11x+1160000-8x=1385000\\\\3x=225000\\\\x=\$75000$

Therefore , the amount of note is $75000 and $70000 for 11% and 8% interest rate respectively .

Hence , this is the required solution .

8 0

4 years ago