MATHEMATICS MIDDLE SCHOOL

You buy a shirt that is on sale for 30% off. You pay $22.40. Your friend wants to know the original price of the shirt. Whats the answer?

Answers

Answer 1
Answer: 30% off
theh shirt is 22.40 after discount
original=100%
 original-discount=22.40
100-30=70%
22.40=70%
percent means parts out of 100
22.40=70/100 of original
multiply both sides by 100/70 to clear fraction
2240/70=original
32=original


original=$32.00
Answer 2
Answer: The price of the shirt is $22.40.
Since it is 30% off, you would need to add back on the 30%
22.40*100% is 22.40, So you would do 22.40*130% to bring back the thirty.
The answer is $29.12
To check the answer, you can do 29.12*70% because 100-30=70

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I need help on #14 please!

Answers

Yes your answer would be A 100000

 Please help me When buying a new car, you have a choice of 4 different models, 3 different colors, and either compact or family size. How many choices are there for one car?  
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17.   There are 20 entries in the chess tournament. How many ways can they finish in first, second, and third place? 340
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Please help will give brainliest brainliest

Answers

Answer:

D. A\subset \mathbb{R}*\mathbb{R}.

Step-by-step explanation:

Consider the set

A=\left\{(2,3),\ (5,1),\ (-3,-2),\ (0,3)\right\}

This set consists of four ordered pairs.

The first numbers in these pairs are 2,\ 5,\ -3,\ 0. These numbers are integer numbers (not natural, because -3 is negative).

The second numbers in these pairs are 3,\ 1,\ -2,\ 3. These numbers are integer numbers too (not natural, because -2 is negative).

Options contain only natural and real sets, so, the first and the second numbers are real numbers and

A\subset \mathbb{R}*\mathbb{R}.

Answer:

D. R X R

Step-by-step explanation:

The answer is choice D because, the set of the actual numbers of R has a 0 so A is a subset of R X R

Find the value of x in the triangle. Then classify the triangle as acute, right, or obtuse.(image)

a.
93°, acute
c.
108°, acute
b.
98°, obtuse
d.
97°, right

Answers

its a 93 acute that would be my answer i  remember when  idid this
B 98 degrees and its obtuse

Simplify each expression so that no negative exponents appear in the final result. Assume that all variables represent nonzero numbers.

Answers

((2p)/(q^(2))) ^(3) ((3p^(4))/(q^(-4)))^(-1)  Multiply the outside exponent into each

((2p^(3))/(q^(6)) )((3p^(-4))/(q^(4)) )  Multiply together

(6p^(-1))/(q^(10)) = (1)/(q^(10)6p^(1))

When you multiply an exponent DIRECTLY into another variable(with an exponent), you multiply the exponents.

For example:

(x²)³ = x^(6)

(x^(4))^(5) = x^(20)


When you multiply a variable with an exponent into another variable with an exponent, you add the exponents.

For example:

(x^(2) )(x^(3) )=x^(5)

(x^(1) )(x^(3)) = x^(4)


First I multiplied the outside exponents into the numerator and the denominator.

When you have a negative exponent, you move it onto the other side of the fraction to make it positive.

For example:

x^(-2) = (1)/(x^(2))

(x)/(y^(-1)) = x(y^1)

(1)/(y^(-2)) = y^2


Sorry if this is confusing

Which can is the polynomial function of the lowest degree with rational real coefficients, a leading coefficient of 3 and roots 5 and 2

Answers

Answer:

y = 3x² - 21x + 30

Step-by-step explanation:

given the polynomial has roots x = 5 , x = 2 , then

(x - 5) and (x - 2) are factors and

y = a(x - 5)(x - 2) ← a is a multiplier

here a = 3

y = 3(x - 5)(x - 2)

  = 3(x² - 7x + 10) = 3x² - 21x + 30

Answer:

Y = 3x2 - 21x + 30

Step-by-step explanation:
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