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Rudik [331]
3 years ago
13

How can you evaluate an algebraic expression

Mathematics
1 answer:
fredd [130]3 years ago
6 0

Answer:

Step-by-step explanation:

In algebra we work with variables and numerals. To evaluate an algebraic expression simply means that you are going to determine the value of an expression by substituting and evaluating using the operation order.

in summary in order to evaluate an algebraic expression

  • you must identify the variable and its value
  • you will substitute the given value  for the variable
  • complete the necessary calculations

Take for example;

evaluate 2a + 4b - 2c

given that a = 2 , b = 1 , c = 5

since you already know the value of the variables you substitute them into the question

we have

2(2) + 4(1) +2 ( 5)

4 + 4 + 10

18.............. answer.

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I'm super confused. Can anybody answer while writing the steps?
kvv77 [185]

The formula for desnity is d= m/v (mass over volume), so

1) 0.18 = 240/v Plug in the numbers you have (0.18 being the density and 240 being the volume)

2) 0.18(240) = 240/v(240) multiply 240 on each side to get rid of the 240 on the right side of the equation.

3) 43.2 = m

So, the formula would be d=m/v and m= 43.2

5 0
3 years ago
Name the Property of Equality that justifies this statement:<br> If l = m, then m=1
Nesterboy [21]

Answer:

symmetric property

Step-by-step explanation:

For all real numbers x  and y ,

if x=y , then y=x .

Order of equality does not matter.

3 0
3 years ago
Read 2 more answers
1.Which statement about two negative numbers is true? .
Ugo [173]

Answer:

To negative numbers makes a positive number.

(only in dividing and multiplying)

Step-by-step explanation:

Please mark me brainliest

3 0
3 years ago
Read 2 more answers
Please help question in the picture
balu736 [363]

Answer:

D

Step-by-step explanation:

D is correct because the sqrt of 91 is 9.5 and 9<9.5<10 makes absolute sense

C is not correct because the sqrt of 33 is 5.7 and 6<5.7<7 does not make sense

B is not correct because the sqrt of 13 is 3.6 and 4<3.6<5 does not make sense

A is not correct because the sqrt of 65 is 8.06 and 7<8.06<8 does not make sense

4 0
2 years ago
The diameter of a planet is about 10,652 mi. The diameter of the planet's moon is about 25% of the planet. What percent of the v
alekssr [168]

Answer:

2\%

Step-by-step explanation:

we know that

If two figures are similar, then the ratio of its volumes is equal to the scale factor elevated to the cube

Let

z-----> the scale factor

x----> the volume of  the planet's moon

y---> the volume of the planet

so

z^{3}=\frac{x}{y}

In this problem we have

z=0.25

elevated to the cube

z^{3}=0.25^{3}=0.015625

Find the percent

0.015625*100=1.56\%

Round to the nearest whole number

1.56\%=2\%

5 0
3 years ago
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