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3 years ago

The price of an item has been reduced by 5%. The original price was $20. what is the price of the item now?

Mathematics

1 answer:

Makovka662 [10]3 years ago

7 0

Answer:

I think its 19

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The price of an item has risen to $152 today. Yesterday it was $95. Find the percentage increase.

Oksanka [162]

Answer:

60% increase

Step-by-step explanation:

152 - 95 = -57

57 / 95 = 0.6

0.6 x 100 = 60

5 0

2 years ago

Write ANY FOUR factors of -23 ab2.

Sauron [17]

Answer:

The factors are;

23, -23 , a , b

Step-by-step explanation:

Here, we want to write the factors of the given expression

-23 ab^2

The factors are simply those values or expression that can be divided by the given expressions

We have the factors as follows;

-23

7 0

3 years ago

What is the answer to 6a+5-x+7x-2a please

almond37 [142]

6a + 5 + x + 7x - 2a
Combine like terms.
4a + 5 + 6x

7 0

3 years ago

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Let H be the set of all polynomials having degree at most 4 and rational coefficients. Determine whether H is a vector space. If

Verizon [17]

Answer:

Yes. It is a vector space over the field of rational numbers $\mathbb{Q}$

Step-by-step explanation:

An element $p$ of the set $H$ has the form

$p(x)=a_{0}+a_{1}x+a_{2}x^{2}+a_{3}x^{3}+a_{4}x^{4}$

where $a_{0},a_{1},a_{2},a_{3},a_{4}$ are rational coefficients.

The operations of addition and scalar multiplication are defined as follows:

$p(x)+q(x)=(a_{0}+a_{1}x+a_{2}x^{2}+a_{3}x^{3}+x_{4}x^4)+(b_{0}+b_{1}x+b_{2}x^{2}+b_{3}x^{3}+b_{4}x^{4})=(a_{0}+b_{0})+(a_{1}+b_{1})x+(a_{2}+b_{2})x^{2}+(a_{3}+b_{3})x^{3}+(a_{4}+b_{4})x^{4}$

$\lambda p(x)=\lambda (a_{0}+a_{1}x+a_{2}x^{2}+a_{3}x^{3}+a_{4}x^{4})=\lambda a_{0}+\lambda a_{1}x+\lambda a_{2}x^{2}+\lambda a_{3}x^{3}+\lambda a_{4}x^{4}$

The properties that $H$ , together the operations of vector addition and scalar multiplication, must satisfy are:

Conmutativity
Associativity of addition and scalar multiplication
Additive Identity
Additive inverse
Multiplicative Identity
Distributive properties.

This is not difficult with the definitions given. The most important part is to show that $H$ has a additive identity, which is the zero polynomial, that is closed under vector addition and scalar multiplication. This last properties comes from the fact that $\mathbb{Q}$ is a field, then it is closed under sum and multiplication.

7 0

3 years ago

What is the value of r the part of the job that marina can complete in 1 hr

vichka [17]

The answer would be 0.4

8 0

3 years ago

Read 2 more answers