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3 years ago

Define what an Algebraic expression is.

Mathematics

2 answers:

Sergeu [11.5K]3 years ago

6 0

Answer:

A expression that contains at least one variable.

Step-by-step explanation:

slavikrds [6]3 years ago

4 0

Answer:

a symbol or a combination of symbols used in algebra, containing one or more numbers, variables, and arithmetic operations:

Step-by-step explanation:

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How many and what type of solutions does the equation have? 5y2 = 187 – 4

Gennadij [26K]

Answer:

Two solutions.

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3 years ago

There are books in a library, there are 4 different kinds of books. Science books make up 3/4 of art books. Comic books are 1/4

Sergeeva-Olga [200]

Answer:

The total number of books is 1020.

Step-by-step explanation:

Denote the books by their first letter.

From the provided information:

$S=\frac{3}{4}A$
$C=\frac{1}{4}T$
$H=\frac{1}{5}T$
$H = A-80$

Compute the expression of T as follows:

$H = A-80\\\\\frac{1}{5}T=A-80\\\\T=5A-400...(i)$

Compute the value of C in terms of A:

$C=\frac{1}{4}T\\\\C=\frac{1}{4}\times {5A-400}\\\\C=\frac{5}{4}A-100...(ii)$

Compute the value of A as follows:

Use expressions (i) and (ii):

$T=S+C+H+A\\\\5A-400=\frac{3}{4}A+\frac{5}{4}A-100+A-80+A\\\\5A-400=4A-180\\\\A=220$

Compute the value of T as follows:

$T=5A-80\\\\T=(5\times 220)-80\\\\T=1100-80\\\\T=1020$

Thus, the total number of books is 1020.

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3 years ago

Raina has bought 36 pounds of dog food. She feeds her dog 3/4 pounds for each meal. For how many meals will the food last?

Karo-lina-s [1.5K]

Answer:

Answer:

27 days

Step-by-step explanation:

It is a simple division question

18 / (2/3)

Multiply by reciprocal

18 * 3 / 2 = 27

Step-by-step explanation:

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2 years ago

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