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3 years ago

For what value of b, would the equation 3/4(12x−9)+b/4=5−3(2−3x) have infinitely many solutions?

Mathematics

2 answers:

kati45 [8]3 years ago

8 0

Answer:

b=23

Step-by-step explanation:

AnnyKZ [126]3 years ago

4 0

B=23
It may even be wrong

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The image below shows where coal deposits are found in the United States. Explain how these coal deposits are energy sinks and c

Rudik [331]

Answer:

It is a little bit trivial:

As we know:

Energy sink: is anything that uses energy.

Energy source: is anything that produces energy.

How the caol deposits can be energy sinks? well, you want to extract the coal from those deposits, and to do it, you need to "use energy" (the type of energy can depend on the extraction method, for example, if you use a pickaxe to extract the coal, you are using mechanical energy)

These coals are potential energy sources because coal is an energy source, potential means that, given some circumstances, something can transform into other things.

So potential energy source in this situation means that those coal deposits can be potential energy when we extract the coal and use it as an energy source.

3 0

3 years ago

a boat takes 4 hours to go 20 miles upstream.It can go 32 miles downstream in same time.Find the rate of the current and the rat

Zinaida [17]

Let

x---------> the rate of the boat in still water in mph

y--------> the rate of the current in mph

we know that

Upstream

$rate=\frac{20}{4} \\\\ rate=5mph$

$x-y=5$ equation $1$

Downstream

$rate=\frac{32}{4} \\\\ rate=8mph$

$x+y=8$ equation $2$

Adds equation $1$ and equation $2$

$x-y=5\\ x+y=8\\ -----\\ 2x=13\\ x=6.5mph$

Find the value of y

$x+y=8\\ y=8-x\\ y=8-6.5\\ y=1.5 mph$

therefore

the answer is

the rate of the boat in still water is $6.5 mph$

the rate of the current is $1.5 mph$

7 0

3 years ago

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Multiply (x−3)(x+2)

Phantasy [73]

We FOIL, multiply firsts, outers, inners and lasts, and add them all up.

(x-3)(x+2) = x·x + 2x - 3x + (-3)(2) = x² - x - 6

Answer: x² - x - 6

4 0

4 years ago

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Which of the following graphs correctly represents: (pictures)

Aloiza [94]

The correct answer is: [A]:
______________________________________________________
{The first graph that is shown among the answer choices provided}:
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→ shows: " x ≤ 3 " ; as follows:
______________________________________________________

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3 years ago

What is three eights as a decimal

Juli2301 [7.4K]

Answer:

3/8 as a decimal is 0.375

Step-by-step explanation:

6 0

4 years ago

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