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3 years ago

Hannah is 3 years older than twice her brother Joey’s age. Joey is 2 years old. How old is Hannah? Show all of your work!

Mathematics

1 answer:

DaniilM [7]3 years ago

5 0

Answer:

Step-by-step explanation:

twice for joey's age so joeys age is 2 double that it will be 4 so 3+4=7

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At 8:00 A.M., Bob started filling a 2,400-gallon pond. At 10:00 A.M., he had filled 1,200 gallons. At what time will the pond

vredina [299]

Answer:

12:00 PM

Step-by-step explanation:

7 0

3 years ago

If mZ1 = (4x + 2)° and m/3 = (5x – 15)", what is the value of a?

posledela

Answer:

Step-by-step explanation:

angle one and angle three are equal to each other

so if you set the equations equal to each other

(4x+2)=( 5x-15)

move the 4x the right by subtracting it giving you 1x

then add 15 to 2 giving you 17

17=1x

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3 years ago

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blagie [28]

Answer:

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Step-by-step explanation:

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3 years ago

Read 2 more answers

Match the phenomenal expression on the left with the simplified version on the right

nalin [4]

Given the polynomial expression:

(y + 5)²

(y - 5)(y + 5)

Let's simplify each of the given expression:

a.) (y + 5)²

The given equation is a factor of a perfect square trinomial. For this type of expression, the following is the formula for expanding it.

$\text{ (a+b)}^2\text{ = }a^2\text{ + 2ab + }b^2$

We get,

$\mleft(y+5\mright)^2=(y)^2+2(y)(5)+(5)^2$ $(y+5)^2=y^2+10y+25$

b.) (y - 5)(y + 5)

To be able to simplify the following expression. We will be using the formula for the difference of two squares.

$(a+b)(a-b)=a^2-b^2$

We get,

$\mleft(y-5\mright)\mleft(y+5\mright)=(y)^2-(5)^2$ $(y-5)(y+5)=y^2-25^{}$

8 0

1 year ago

When the polynomial is written in standard form, what are the values of the leading coefficeient and the constant? 5x + 2 - 3x2

Elina [12.6K]

Answer:

The leading coefficient is -3

The constant is 2

Step-by-step explanation:

The standard form of a polynomial is the descending order, that means that it must be written according from its higher power, down straight to the coefficient with no variable.

Hence, the leading coefficient is the one that is next to the highest exponent of the polynomial, in this case: =3x2.

The second term is 5x

And the last is 2. the constant

7 0

3 years ago