Which expressions are equivalent to 2(4f + 2g)?

Mathematics

1 answer:

andreyandreev [35.5K]1 year ago

8 0

Answer:

For example, 8f + 4g is one of the most used expression

Another example is 4 (2f + g), is correct too

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A box contains red marbles. 8 green marbles 4 blue marbles and 3 yellow marbles. If 2 marbles are randomly selected without repl

Agata [3.3K]

Answer:

0.1052 = 10.52%

Step-by-step explanation:

The question missing the number of red marbles, it should be 5.

You select 2 marble randomly without replacement. The word without replacement show that you pick the marble at different times, so the order is important. There are 5 red, 8 green, 4 blue, 3 yellow which means the total marble is 8+4+3= 16 marbles. The chance to pick red marble then a green marble will be:

5/20 * 8/19= 2/19= 0.1052 = 10.52%

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2 years ago

WELP ME PLZZ THANKSSS

Luden [163]

Answer:

I got 32169.91

Step-by-step explanation:

so I would put D bc it's closest

Hope This Helps! Have A Nice Day!!

5 0

3 years ago

Olivia and her three siblings bring a sack lunch to school each day, consisting of a bagel, an apple, a cookie, and a juice box.

Vikki [24]

Wow OK so the first number I came to was 72 so that's
bagels 6x12=72
apples 8x9=72
cookies 12x6=72
juice boxes 9x8=72

72/4=18 so she could make their lunch for 18 days

7 0

3 years ago

Read 2 more answers

Measure of angle A : 3x

agasfer [191]

Answer: 11 degrees

Step-by-step explanation:

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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

Mandarinka [93]

Recall your d = rt, distance = rate * time.

now, if the boat has a speed of say "b", and the current has a speed of say "c", when the boat is going upstream, is not really going "b" fast, is going " b - c " fast, because the current is eroding speed from it, going upwards.

And when the boat is going downstream, is not going "b" fast either, because the current is now adding to speed to it, so is really going " b + c " fast.

The time it took one way, is the same time it took back, 4 hours each way.

thus

$\bf \begin{array}{lccclll}
&\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{t}\\
&------&------&------\\
Upstream&20&b-c&4\\
Downstream&32&b+c&4
\end{array}
\\\\\\
\begin{cases}
20=4(b-c)\implies \frac{20}{4}=b-c\implies 5+c=\boxed{b}\\
32=4(b+c)\implies \frac{32}{4}=b+c\implies 8=b+c\\
--------------------\\
8=\left(\boxed{5+c} \right)+c
\end{cases}
\\\\\\
8=5+2c\implies 3=2c\implies \cfrac{3}{2}=c\implies 1\frac{1}{2}=c$

what's the speed of the boat? well, 5 + c = b.

6 0

3 years ago