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3 years ago

The sum of two rational numbers will always be?

1 answer:

lisabon 2012 [21]3 years ago

4 0

The sum of two rational numbers will always be rational. A rational number is a number that can be expressed in the form a/b with b ≠ 0. So, if we can prove that the sum of two rational numbers has a denominator, we have proven this statement. Since any rational number can be written as a/b, we can write sum of two rational numbers as a/b + c/d. We can make this ad+bc/bd. Since we proved that the sum of two rational numbers has a denominator, we also prove that their sum is rational.

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How to solve for exponent using PEMDAS

sammy [17]

Answer:

In PEMDAS the E stands for exponents so if you see a problem with exponents and there is no parentheses you would just do exponents first.

Step-by-step explanation:

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4 0

3 years ago

Solve (x+3)2+(x+3)-2=0

Alex777 [14]

Answer:

pretty sure x=0 if not it might be infinite solutions but im pretty sure its just 0.

I plugged it in and i think it works

Step-by-step explanation:

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3 years ago

Read 2 more answers

Please help me out it’s urgent

Talja [164]

Perimeter:

$6y + 12$

Area:

${2y}^{2} + 12y$

Step-by-step explanation:

Perimeter of a rectangle : P= 2( L + w)

in this case it would be 2(y+6) + 2(2y)

= 2y+12 + 4y

simplified to 6y +12

Area of a rectangle : A= LW

=(y+6)(2y)

We foil and get

${2y}^{2} + 12y$

3 0

3 years ago

Let h(x)=505.5+8e−0.9x . What is h(5) ? rounded to the nearest tenth. any help would be great

Naddik [55]

For this case, the first thing we are going to do is rewrite the function.
We have then:
h (x) = 505.5 + 8 * exp (-0.9 * x)
We evaluate the value of x = 5 in the function.
We have then:
h (5) = 505.5 + 8 * exp (-0.9 * 5)
h (5) = 505.588872
round to the nearest tenth:
h (5) = 505.6
Answer:
the value of h (5) is:
h (5) = 505.6

3 0

3 years ago

Read 2 more answers

A coffee shop spends $408 for an order of 17 cases of paper cups.

solong [7]

Answer:

Option C is correct

$528 will the total cost spends by coffee shop

Step-by-step explanation:

Unit rate defined as the rates are expressed as a quantity of 1, such as 3 feet per second or 7 miles per hour, they are called unit rates.

As per the statement:

A coffee shop spends $408 for an order of 17 cases of paper cups.