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klasskru [66]
2 years ago
5

id="TexFormula1" title="(\frac{7}{2}^{2}-\frac{3}{4}^{1})*\frac{1}{3}" alt="(\frac{7}{2}^{2}-\frac{3}{4}^{1})*\frac{1}{3}" align="absmiddle" class="latex-formula">
Mathematics
2 answers:
KIM [24]2 years ago
7 0
The answer is = 7 11/12
Ivahew [28]2 years ago
6 0

Step-by-step explanation:

(7²/2-3¹/4)×⅓

(49/2-3/4)×⅓

(98-3)/4 ×⅓

95/4×⅓

95/12

I would appreciate if my answer is chosen as a brainliest answer

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The average weight of the class of 35 students was 45 KG. with the admission of a new student the average weight came down to 44
melamori03 [73]

The weight of the new student is 27 kg.

Average weight

= total weight ÷total number of students

<h3>1) Define variables</h3>

Let the total weight of the 35 students be y kg and the weight of the new student be x kg.

<h3>2) Find the total weight of the 35 students</h3>

<u>45 =  \frac{y}{35}</u>

y= 35(45)

y= 1575 kg

<h3>3) Write an expression for average weight of students after the addition of the new student</h3>

New total number of students

= 35 +1

= 36

Total weight

= total weight of 35 students +weight of new students

= y +x

44.5  =  \frac{y + x}{36}

<h3>4) Substitute the value of y</h3>

44.5 =  \frac{1575 + x}{36}

<h3>5) Solve for x</h3>

36(44.5)= 1575 +x

1602= x +1575

<em>Subtract 1575 from both sides:</em>

x= 1602 -1575

x= 27

Thus, the weight of the new student is 27 kg.

7 0
2 years ago
Find all angle measures
Natali [406]

Answer:

1=90

2=68

3=112

4=112

5=68

6=68

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3 0
3 years ago
The sales tax on the model rocket shown is $1.92. What is the percent of sales tax? A drawing of a model rocket with a tag label
astraxan [27]

<u><em>Answer:</em></u>

The sales tax is 8%

<u><em>Explanation:</em></u>

<u>We are given that:</u>

The price of the rocket is $24 and the sales tax is $1.92

To get the percentage of the sales tax, all we have to do is divide the sales tax by the price of the rocket and then multiply the quotient by 100 (to convert the ratio to percentage)

<u>This is done as follows:</u>

% of sales tax = \frac{tax}{price}*100

% of sales tax = \frac{1.92}{24}*100 = 8%

Hope this helps :)

4 0
3 years ago
We have 10 gallons of gas in the car. we use 1 5/8 gallons each hour. How many hours of gas do we have?
Andre45 [30]
So you have 10 gallons of gas
You use 1.625 or 1.63 an hour

You can either do 10/1.625 = 6 hours and 15 mins
You can either do 10/1.63 = 6 hours and 13 mins



5 0
3 years ago
Need help solving these 3 equations, please help.
pantera1 [17]
1.) r=-1/3
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