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2 years ago

The sum of two rational numbers will always be

Mathematics

1 answer:

Ostrovityanka [42]2 years ago

7 0

The sum of two rational numbers will always be rational

$\frac{a}{b} +\frac{c}{d} =\frac{ad+bc}{bd}$ , therefore it will always be rational

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If f(x)=7x what is the inverse of f(x)

Brums [2.3K]

Answer:

f(x)=x/7

Step-by-step explanation:

f(x)=7x

y=7x

x=7y (switch y and x for inverse)

x=7y (isolate y)

x/7=y

The inverse of f(x)=7x is f(x)=x/7

8 0

3 years ago

Write an inequality equation: Lyla has $100 in her bank account. She wants to buy presents that are $5 each. Wrapping paper will

lisov135 [29]

(100 - 25) / 5
15 presents

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2 years ago

the amount of water in a bathtube as it drains can be modeled by this equation with y representing the number of gallons of wate

koban [17]

Since $y$ is representing the number of gallons of water in the tub, we need to replace $y$ with the number of gallons remaining in the tube to find the time. Fortunately, the problem is telling us just that: 17.8 gallons. The only thing left is replacing that value in the equation, and solve for $x$ to find the time:
$17.8=-7.3x+39.7$
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We can conclude that after 3 minutes the tub will have 17.8 gallons of water remaining.

4 0

2 years ago

Find the circumference of the circle below. (Use 3.14 for Pi)

ipn [44]

so the right answer is 31.4 cm(option C)

please see the attached picture for full solution 

Hope it helps

Good luck on your website

3 0

3 years ago

Read 2 more answers

Which pairs of figures are congruent? Which pairs are similar?

Naily [24]

Answer:

sorry if wrong

Step-by-step explanation:

The first with the triangles is similar

the second one with the circles is non

the third one with the squares is non

the forth one with the different shape is both,

hope this helps

7 0

2 years ago