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3 years ago

The product of two rational numbers

Mathematics

1 answer:

sammy [17]3 years ago

8 0

Answer:

The product of two rational numbers is rational.

So, multiplying two rationals is the same as multiplying two such fractions, which will result in another fraction of this same form since integers are closed under multiplication. Thus, multiplying two rational numbers produces another rational number.

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What is 77/200 as a decimal

garri49 [273]

The correct answer is 0.385.

Explanation:
Decimals deal with powers of 10, such as 10, 100, 1000, etc. We can change this to a power of 10 by dividing both top and bottom by 2; this will give us 100 in the denominator.

77/2=38.5, so we have 38.5/100.

Dividing by 100 is the same as moving the decimal two places to the left, so we have 0.385.

8 0

3 years ago

The population of a town was 10,000 in 2018. Each year the town's population grows by 23%. Let x=0 be the year 2018. Create the

Naily [24]

Answer:

$f(x)=10000(1.23)^x$

Step-by-step explanation:

We are going to apply algebra to solve for the exponential growth

we know that the expression for the exponential formula is

$y = ab^x.$

where

a = the amount before measuring growth or decay

= 10,000

r = growth or decay rate = 23%= 0.23

x = number of time intervals that have passed

since this problem is on the growth we are going to replace "b" with (1+r), likewise for decay (1-r)

hence the formula becomes

$y = a(1+r)^x.$

$f(x)=10000(1+0.23)^x \\\\f(x)=10000(1.23)^x$

The expression that will give the population value is

$f(x)=10000(1.23)^x$

7 0

3 years ago

Please solve for x and explain your steps.

melomori [17]

You use Sin-Cos-Tan. Since Tan is opposite and adjacent (SOH-CAH-TOA) we use that equations which is listed below. We rearranged the equation to get O alone and then plug everything in.

7 0

3 years ago

-10-2 = help me pls i don’t understand

Lelechka [254]

Answer:

-12

Step-by-step explanation:

-10 - 2 = -12

When two numbers have same sign, add and the result will have the common sign

Sign of 10 is (-)

Sign of 2 is (-)

So add and put the (-) for the answer

-12

5 0

4 years ago

Read 2 more answers

10/12x7/8 <img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B%20%2010%7D%7B12%7D%20%20%5Ctimes%20%20%5Cfrac%7B7%7D%7B8%7D%20" id=

faust18 [17]

$\dfrac{ 10}{12} \times \dfrac{7}{8}$

$\dfrac{2 \times 5}{2 \times 6} \times \dfrac{7}{8}$

$\dfrac{ 5}{6} \times \dfrac{7}{8} \ \ \ \text {(Cancel common factor 2)}$

$\dfrac{ 5 \times 7}{6 \times 8} \ \ \ \text {(Combine into single fraction)}
$

$\dfrac{ 35}{48}$

3 0

3 years ago