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rjkz [21]
3 years ago
15

Give an example of a real-world situation involving two unknown quantities. Then write an algebraic expression to represent the

situation.
Mathematics
2 answers:
Stels [109]3 years ago
7 0

Answer:

t=\frac{15}{s} represents the situation described below.

Step-by-step explanation:

A real-world situation could be

<em>Mary is runs everyday, she runs 15 kilometers per day, if she move at a constant speed, what would be the ratio that represents the time she needs everyday to make 15 kilometers.</em>

<em />

In this example, we have three quantities, distance traveled, speed and time. But, we already now the distance traveled, and we don't know the speed and time Mary uses to make 15 kilometer. We also know that the movement is constant, so it's defined by

s=\frac{d}{t}

Where s is speed, d is distance and t is time. So, if d=15, the ratio that represents time would be

s=\frac{d}{t}\\ t=\frac{d}{s}\\ t=\frac{15}{s}

Therefore, the algebraic expression that represents the hypothetical situation is

t=\frac{15}{s}

Where t is time and s is speed.

RUDIKE [14]3 years ago
3 0
A real world expression would be Toby had makes 3 dollars per hour he wants to buy a ps4 for 40 dollars. he already has 10 dollars. how many hours does he have to work to afford his ps4. 3x+10=40
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Please help asap, 20 points
s344n2d4d5 [400]

Solving for each equation:

A: True.

\frac{n}{2} +3 *4 = \frac{n}{2}+12\\\\\frac{n}{2} + 12 = \frac{n}{2} + 12

B: False.

\frac{1}{3}z+\frac{2}{3}z * 9 = 9z\\\\\frac{1}{3} z+6z = 9z

C: True, given that y = 1

-8y +4.3y + 3.7 = 0\\\\-3.7y = -3.7

D: True, given that b = 6.66667

12-1.8b+1.8b=1.8b\\12 = 1.8b

E: True.

\frac{m}{8} + 7(\frac{m}{8} ) =m\\\\\frac{m}{8} + (\frac{7m}{8} )= m\\\\\\\frac{8m}{8} = m\\

7 0
3 years ago
Jessica went to the mall and used 1/6 of her money on lunch. What is the fraction of her money expressed as a decimal?
skad [1K]
The answer to this problem situation would be D.
To solve this problem you would simply divide 1 by 6 (the line between the 1 and 6 in the fraction is a division sign with the denominator always out and the numerator in)
1) 1÷6= 0.1666666666667
Now you traditionally and usually would round up but if the direction says otherwise then round down.
2) 0.17
And 0.17 would be your final answer!
4 0
3 years ago
Read 2 more answers
Use strips of paper 81/2 inches long. Each strip represents 1 whole. Fold
BlackZzzverrR [31]

Answer:

You didn't tell me what to do

Step-by-step explanation:

6 0
3 years ago
Study the figure.
tia_tia [17]

Answer:

So we know the formula to calculate the area of the circular sector:

S=(r^2*π*a)/306°=

(5^2*3.14*40°)/360°= (1000*3.14) /360=8.72cm^2 so the right alternative should be the first one ,A.

Step-by-step explanation:

r - radius of the circle

a - corner of the circular sector

S - surface

4 0
3 years ago
I’ve been stuck on this question for quite some time. I was struggling so I needed help, can you help me?
Crank
I can’t see all the question !!
3 0
3 years ago
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