All categories

2 years ago

Given that

Mathematics

1 answer:

alukav5142 [94]2 years ago

7 0

Answer:

15:12:16

Step-by-step explanation:

x:y= 5:4

y:z= 3:2

5×3= 4×3

3×4= 2×8

15= 12

12= 16

Therefore x:y:z can be shown as follows

= 15:12:16

You might be interested in

On the assembly line it takes 2 ½ minutes to complete task one, 3 minutes 10 seconds to complete task two and 1 minute to comple

Arlecino [84]

I dont know thats a hard one

3 0

3 years ago

Read 2 more answers

A: What are the solutions to the quadratic equation x2+9=0? B: What is the factored form of the quadratic expression x2+9? Selec

Paraphin [41]

Answer:

A. The solutions are $x=3i,\:x=-3i$ .

B. The factored form of the quadratic expression $x^2+9=(x-3i)(x+3i)$

Step-by-step explanation:

A. To find the solutions to the quadratic equation $x^2+9=0$ you must:

$\mathrm{Subtract\:}9\mathrm{\:from\:both\:sides}\\\\x^2+9-9=0-9\\\\\mathrm{Simplify}\\\\x^2=-9\\\\\mathrm{For\:}x^2=f\left(a\right)\mathrm{\:the\:solutions\:are\:}x=\sqrt{f\left(a\right)},\:\:-\sqrt{f\left(a\right)}\\\\x=\sqrt{-9},\:x=-\sqrt{-9}$

$x=\sqrt{-9} = \sqrt{-1}\sqrt{9}=\sqrt{9}i=3i\\\\x=-\sqrt{-9}=-\sqrt{-1}\sqrt{9}=-\sqrt{9}i=-3i$

The solutions are:

$x=3i,\:x=-3i$

B. Two expressions are equivalent to each other if they represent the same value no matter which values we choose for the variables.

To factor $x^2+9$ :

First, multiply the constant in the polynomial by $i^2$ where $i^2$ is equal to -1.

$x^2+9i^2$

Since both terms are perfect squares, factor using the difference of squares formula

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

$x^2+9=x^2+9i^2=\left(-3i+x\right)\left(3i+x\right)$

5 0

2 years ago

A team of bakers can roll and form 5 dozen pretzels in 9 minutes. How many pretzels can this team form in 1 hour?

vodka [1.7K]

Answer 400

Step-by-step explanation: 1 hours = 60 min

60 min divided by 9 = 6.66666667

6.66666667 * 5 dozen pretzels/ 60 pretzel = 400

did it pretty quickly may be wrong

5 0

3 years ago

Read 2 more answers

which is an algebraic equation that represent s the following word problem that shows how many bonus points , s, Samantha earned

Anna35 [415]

A = 15 a = athena, s = samantha, b = bonus points
s = b + a

s = b + 15

7 0

2 years ago

Can you please help and I need help fast

KonstantinChe [14]

Answer:

Step-by-step explanation:

He borrowed money so he has -5 dollars and but he payed 2 back, so now he needs to pay $3

6 0

2 years ago

Read 2 more answers