3 years ago

Matthew bought a suitcase marked down from $90 to $81. What is the discount percentage?

Mathematics

1 answer:

Ksivusya [100]3 years ago

7 0

Answer:

10%

Step-by-step explanation:

Percent change= New-Old |Old|× 100% percent change=81-90 |90| × 100= -9 90×100=-10%

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Add: (3x2 - 5x + 6) + (9 - 8x - 4x2) A) 12x2 - 13x + 2 B) 7x2 + 3x - 3 C) 7x2 - 13x + 15 D) -x2 - 13x + 15

kati45 [8]

Answer:

Step-by-step explanation:

So we have the expression:

$(3x^2-5x+6)+(9-8x-4x^2)$

Combine like terms:

$=(3x^2-4x^2)+(-5x-8x)+(6+9)$

Add or subtract:

$=(-1x^2)+(-13x)+(15)$

Simplify:

$=-x^2-13x+15$

Our answer is D

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3 years ago

How many tenths are in 8.32?

Finger [1]

there are 3 tenths in 8.32

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3 years ago

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3/5 ÷ 2 as a Fraction

docker41 [41]

Answer:

1/3 AMOSC T.rhecc

Step-by-step explanation:

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3 years ago

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Which expression is not a polynomial?<br> x³<br> x² - 2x<br> x³ +1<br> 12x

zaharov [31]

Answer:

12x

Step-by-step explanation:

It has no exponent so it is not a polynomial

3 0

2 years ago

A cell phone tower covers a circular area with a radius of 15 miles. You are at a location that is 11 miles west and 12 miles so

Murljashka [212]

Answer:

No you do not.

This is because we can use Pythagoras Theorem to show that our location sits outside the 15 mile radius of the cell tower.

To work is out you would write the equation

${11}^{2} + {12}^{2} = 265$

Then to work out the Hypotheses you would

$\sqrt{265} = 16.2788205961$

Which proves that the location is outside of the 15 Mile radius of the cell tower.

3 0

3 years ago