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3 years ago

-10p - (1 - 2p) (Distributive property[Expand] And combine like terms

Mathematics

1 answer:

Rzqust [24]3 years ago

6 0

-10p - (1-2p)

(Multiply (1-2p) by -1)

-10p - 1 + 2p

(Combine like terms)

-8p - 1

ANSWER: -8p - 1

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A motorboat travels 220 kilometers in 4 hours going upstream. It travels 260 kilometers going downstream in the same amount of t

aliya0001 [1]

Answer: The rate of boat is 60 kmh.

The rate of current is 5 kmh.

Step-by-step explanation:

Alright, lets get started.

Suppose the rate of boat in still water is : b kmh

Suppose the rate of current is : c kmh

When the boat is going upstream, the relative speed will be : $(b-c)$

When the boat is going downstream, the relative speed will be: $(b+c)$

Boat travels 220 kilometers in 4 hours going upstream.

$speed=\frac{distance}{time}$

$(b-c)=\frac{220}{4}$ .................. equation (1)

It travels 260 kilometers going downstream in the same amount of time.

$(b+c)=\frac{260}{4}$ ................... equation (2)

Adding equation 1 and 2

$b-c+b+c=\frac{220}{4}+\frac{260}{4}$

$2b=\frac{480}{4}$

$2b=120$

$b=60$

Plugging the value of b as 60 in equation 2

$60+c=\frac{260}{4}$

$60+c=65$

$c=5$

Hence the rate of boat is 60 kmh.

Hence the rate of current is 5 kmh.

Hope it will help :)

6 0

3 years ago

drag the fractions that is equivalent to each repeating decimal each fractions may be used only once

gregori [183]

Answer:

0.23 = 7/30

0.4 = 4/9

1.6 = 5/3

3.5 = 32/9

Step-by-step explanation:

I'm 100% that this is correct

6 0

3 years ago

Shane y Abha obtuvieron una medalla del equipo que requería que su equipo recolectara no menos de 2000 latas para reciclar. Abha

Usimov [2.4K]

Answer: Shane collected more than 911 cans

Step-by-step explanation:

S is the number of cans that shane collected.

A is the number of cans that Abha collected.

We know that:

together collected more than 2000 cans

A + S > 2000

Abha collected 178 more cans that Shane:

A = S + 178

Now, we can replace this equation in the inequality and get:

A + S > 2000

S + 178 + S > 2000

2*S > 2000 - 178 = 1822

S > 1822/2 = 911

This means that shane collected more than 911 cans.

6 0

4 years ago

What’s the value of this expression?<br><br> 6x4-(5+3) dividend by 2

solong [7]

Answer:

Step-by-step explanation:

If you use PEMDAS(Parentheses, Exponents, Multiplication, Division, Addition, Subtraction) you would take care of what's in the parentheses, so you would at 5 and 3 to get 8. Then you would multiply 6 and 4 to get 24, so far your equation looks like this 24 - 8 ÷ 2. You then divide 8 by 2 to get 4 then subtract 24 from 4 to get 20.

8 0

3 years ago

How much ounces are in 22 grams 0.035x

Daniel [21]

Answer:

0.77 ounces

My apologies if my answer is wrong :)

8 0

3 years ago

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