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Korolek [52]
3 years ago
11

(2 4/10+8 4/5)-3 1/5 equals what whole number

Mathematics
2 answers:
FromTheMoon [43]3 years ago
8 0

Answer:

8

Step-by-step explanation:

vladimir2022 [97]3 years ago
3 0

Answer:

-35 21/25

Step-by-step explanation:

<em>The equation below can be rewritten as</em>

(2 4/10+8 4/5) -3 1/5      

<em>this:</em>

-3 1/5 (2 4/10+8 4/5)

<em>Now, distribute -3 1/5 </em>

-7 17/25 - 28 4/25

<em>Now you evaluate the expression</em>

-35 21/25

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If a 24-kg mass stretches a spring 15 cm, what mass will stretch the spring 10 cm
natulia [17]

Answer:

<h2>16kg</h2>

Step-by-step explanation:

 This problem is borers on elasticity of materials.

according to Hooke's law,<em> "provided the elastic limit of an elastic material is not exceeded the the extension e is directly proportional to the applied force."</em>

F= ke

where F is the applied force in N

          k is the spring constant N/m

          e is the extension in meters

Given data

mass m= 24kg

extensnion=15cm in meters= \frac{15}{100}= 0.15m

we can solve for the spring constant k

we also know that the force F = mg

assuming g=9.81m/s^{2}

therefore

24*9.81=k*0.15\\235.44=k*0.15\\k=\frac{235.44}{0.15} \\k=1569.6N/m\\

We can use this value of k to solve for the mass that will cause an extension of  10cm= 0.1m

x*9.81=1569.6*0.1\\\\x= \frac{156.96}{9.81} \\\x= 16kg

5 0
3 years ago
An arts academy requires there to be 4 teachers for every 84 students and 3 tutors for every 30 students. How many students does
Sonja [21]

Answer:

21 students per teacher

10 students per tutor

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Step-by-step explanation:

84 ÷4=21

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6 0
3 years ago
Solve the quadratic equation below for the exact values of x:<br> 4x^2-5=75
grandymaker [24]

Step-by-step explanation:

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6 0
3 years ago
Is -1.125 a real number?
pochemuha
-1.125=-1\frac{125}{1000}=-1\frac{1}{8}\ is\ real\ number
7 0
3 years ago
Read 2 more answers
 Mr. Elmore's favorite candy is skittles and his favorite flavor combination is lemon &amp; lime. He has a jar of skittles with
jasenka [17]

Answer:

I'm not really sure but it's 30% yellow and 15% green soo or it is 45% or 15% but idk (i don't know if i helped you but that's what I try to do.

3 0
3 years ago
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