Estimate the sum of 196 + 482

Answers

Answer 1

Answer: The estimated sum of 196 and 482 is 700.

We do estimates when we do mental calculation. We relate the number to the nearest number that can easily be computed mentally.

196 is near 200 so we round it up to 200
482 is near 500 so we round it up to 500

Thus, 200 + 500 = 700.

700 is the estimated sum.

Answer 2

Answer:
700 i think because 196 is close to 200 and 482 is close to 500 so 200+500=700

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You roll a six-sided number cube and flip a coin. What is the probability of rolling a number less than 5 and flipping tails? Write your answer as a fraction in simplest form.

Answers

Since there are six sides to the dice, the probability of rolling a number less than 5 is 4/6
There are only two sides to a coin. Therefore, the probability of flipping tails is 1/2

To find what the probability of getting both things, you simply multiply both fractions.
1/2 X 4/6
1 X 4 = 4
2 X 6 = 12
4/12

Since the answer should be given in it's "simplest form", you should cancel it down. Since 12 is also divisible by 4, you divide both sides by 4.
4 ÷ 4 = 1
12 ÷ 4 = 3
1/3

The probability of rolling a number less than 5 and flipping tails is 1/3

Solve for x.

2x-4/10 = 2x/20

Answers

Refine:

$(2x-4)/(10)$

factor out common term 2 :

$(2(x-2))/(10)$

Cancel the common factor 2 :

$(x-2)/(5)$

Refine:

$(2x)/(20)$

$(x-2)/(5) = (x)/(10)$

find least common multiplier of 5 and 10

Multiply by LCM = 10

$(x-2)/(5) *10 = (x)/(10) *10$

$2(x-2)=x$

$2x - 4 = x$

Add 4 to both sides:

$2x-4+4 = x+4$

$2x = x + 4$

$2x - x = 4$

$x = 4$

hope this helps!

What is the product of 3/5 and 5

Answers

$(3)/(5) * (5)/(1)$
so, begin multiplying the numerators,
3*5 =15
next multply the denominators,
5*1 =5
now you have
$(15)/(5)$
so, 15 / 5 = 3

3/5 * 5/1 = 15/5= 3

Final Answer, the product of 3/5*5 is 3

The length of a ship model is 3% of the length of the actual ship the model is 1.5 m long how long is the actual ship

Answers

Proportionate the problem 3/100 = 1.5/x

1.5x100=150 150/3=50

the actual ship is 50m long

Solve by elimination
x+2y=-7
x-5y=7

Answers

$\left \{ {{x+2y=-7} \atop {x-5y=7\ \ | multiply\ by\ -1}} \right. \n\n \left \{ {{x+2y=-7} \atop {-x+5y=-7}} \right. \n+-----\n addition\ method\n\n 7y=-14 \ \ \ | divide\ by\ 7\n\n y=-2\n\n substitute\ y=-2\ to\ first\ equation\n\nx=-7-2y=-7+4=-3\n\nx=-3$

$\left\{\begin{array}{ccc}x+2y=-7\nx-5y=7&|multiply\ both\ sides\ by\ (-1)\end{array}\right\n\underline{+\left\{\begin{array}{ccc}x+2y=-7\n-x+5y=-7\end{array}\right}\ \ \ \ |add\ both\ sides\ of the\ equations\n.\ \ \ \ \ \ \ \ 7y=-14\ \ \ \ |divide\ both\ sides\ by\ 7\n.\ \ \ \ \ \ \ \ \boxed{y=-2}\n\nput\ the\ value\ of\$

Fred has a bakery. He sells 40 cakes in a day. If his sells increased by 120%, how many cakes would he sell in a day?

Answers

To get the result we have to find 120% of 40 and add it to normal sells.
so
120% of 40 = 1.2*40=48
Now I can add 120% of 40 to normal sells
48+40=88 - its our result

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