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Papessa [141]
3 years ago
8

Not sure how start the problem

Mathematics
1 answer:
Volgvan3 years ago
3 0
The answer would be B, 10,000. This is because if they started at 10,000 and sold half their books, they would be at 5,000. Then if they sell 4,000 more, they have 1,000 left. 1,000/10,000 is equal to 1/10 when simplified.
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Multiply 8-2x/5* 45x^3+90^2/10x^2-20x-80
lys-0071 [83]

Answer:

excuse me can you speak english

7 0
3 years ago
3=x+9<br> PLEASE SHOW WORK. SOLVE AND CHECK.
Vika [28.1K]

Answer:

x = —6

Step-by-step explanation:

3 = x + 9

Collect like terms

3 — 9 = x

— 6 = x

x = —6

4 0
3 years ago
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
3 years ago
Diego said that the awnser to the question "How many groups of 5/6 are in 1?" Is 6/5 or 1 1/5.Do you agree with his statement? E
slamgirl [31]

Answer:

Diego is correct.

He has correctly divided 1 in groups of \frac{5}{6}.

Step-by-step explanation:

The question 'How many groups of 5/6 are in 1?'  means that we need to divided 1 into groups of \\frac{5}{6}.

When we form groups from a given total, we divided the total by the size of the group.

If we are dividing N number of people in groups of x number of people, then the expression to find the number of groups formed can be given as:

⇒ \frac{N}{x}

For this question the data given is:

N=1

x=\frac{5}{6}

So, the number of groups formed can be given as:

⇒ \frac{1}{\frac{5}{6}}

When divisor is a fraction, then we multiply the reciprocal of the divisor with the dividend.

⇒ 1\times\frac{6}{5}

⇒ \frac{6}{5}

In order to convert fraction to mixed number we will divide numerator with denominator and then write the quotient as whole number, remainder as numerator and the denominator remains as it is.

On dividing 6 by 5, the quotient =1 and remainder =1. Thus the mized number is:

⇒ 1\frac{1}{5}

Thus, there are \frac{6}{5} or 1\frac{1}{5} groups in 1. This matches with Diego's answer and hence he is correct.

3 0
3 years ago
If a 40-foot tree casts a 16-foot shadow, find the length of the shadow cast by a 24-foot tree
Mrrafil [7]

40/16 = 24/x

16*24 = 384

x = 384 / 40

x =9.6

 it cast a shadow 9.6 feet long

8 0
3 years ago
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