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3 years ago

Evaluate the expression: z(x + 3y) when x = 6, y = 8, and z = 5

Mathematics

1 answer:

Zanzabum3 years ago

4 0

5[6+(3•8)]
5(6+24)
30+120
=150

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Can someone explain to me how to remove all the perfect squares ? I’m kind of confused and my teacher is unavailable to help and

mixer [17]

Answer:

b^2√30b

Step-by-step explanation:

√30b^5 - Original

Break down the radical with its factors (factor tree)

√3*2*5*b*b*b*b*b

See what perfect squares you can take out (Can take out four b terms) You cant take out any perfect squares involving 30 since there are no perfect squares

b^2√3*2*5*b

b^2√30b

4 0

2 years ago

Find the quadratic polynomial if zeros of it are 2 and 1/3 respectively

muminat

Answer:

$\boxed{\sf \ \ \ 3x^2-7x+2 \ \ \ }$

Step-by-step explanation:

Hello,

There are a lot of polynomials which have 2 and 1/3 as zeroes,

I can show you one below

$3(x-2)(x-\dfrac{1}{3})=(x-2)(3x-1)=3x^2-x-6x+2=3x^2-7x+2$

hope this helps

3 0

3 years ago

A healthy human heart beats about 1,533,000 times a year. A sparrow's heart beats about 241,776,000 times in a year. About how m

Galina-37 [17]

Answer:

About 158 times

Step-by-step explanation:

Represent the rate of human heart with H and sparrow's heart with S

$H = 1,533,000\ times$

$S = 241,776,000\ times$

Required

Determine how many times faster is S than H

To do this, we simply divide S by H i.e.

$Number = \frac{S}{H}$

$Number = \frac{241,776,000}{1,533,000}$

$Number = 157.714285714$

$Number = 158$ --- approximated

<em>Hence, the sparrow's heart beats about 158 times faster than the human hearts</em>

5 0

2 years ago

A regular fish tank is 18 in wide 12 in deep and 24 in tall what is the volume of that fish tank

Lady bird [3.3K]

Answer:

(4,5 feet)³=4,5³ cubic feet

Step-by-step explanation:

6 0

3 years ago

Re write the expressoin-21+7

blsea [12.9K]

Answer:

7-21

Step-by-step explanation:

if -a+b

is thesame according to laws of integers as

b-a

6 0

2 years ago