2 years ago

Do you know how to solve this (2x + 4)(x + 3)

Mathematics

1 answer:

nasty-shy [4]2 years ago

7 0

Answer:

18x

Step-by-step explanation:

get the x by itself then it is 2+4=6 so that is 6x and then do 3+x=3x and 6x×3x= 18x

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The speed of a stream is 4km/h. A boat travels 6 km upstream in the time it takes to travel 12 km downstream. What is the speed

Usimov [2.4K]

<span>6 km × 1 hour/(b-4 km) = 12 km × (1 hour/(b+4 km)

6/(b-4) hours = 12/(b+4) hours

6(b+4) = 12(b-4)

6b + 24 = 12b - 48
72 = 6b
b = 12
The boat's speed in still water is 12 km/hour.</span>

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3 years ago

Write 0.70 to 0.14 as a fraction in simplest form

Delvig [45]

$\cfrac{0.70}{0.14}= \cfrac{70}{14}= \cfrac{35}{7}= \cfrac{5}{1}$

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2 years ago

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Vadim26 [7]

3.option a (-8,2)

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3 years ago

If c+1/d=5 , what is the value of 30d/2c+2

klemol [59]

Answer:

$d\in R,\hspace{5}d\neq 0$

Step-by-step explanation:

You can solve for any variable. From the first equation, let's solve for c :

$\frac{c+1}{d} =5\\\\c+1=5d\\\\c=5d-1$

Now, replace the value of c into the other equation:

$\frac{30d}{2c+2} \\\\\frac{30d}{2(5d-1)+2} \\$

Using distributive property

$\frac{30d}{10d-2+2} =\frac{30d}{10d} =3$

However, keep in mind that this is true for:

$d\in R,\hspace{5}d\neq 0$

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2 years ago

In Tammy's video game, she receives a treasure box for completing a mission. Each treasure box gives Tammy a special item. Every

Contact [7]

The answer is C... good luck

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