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Sveta_85 [38]
3 years ago
15

Andrew is showing his work in simplifying −4.5 + 4.2 + 5.6 − 7.3. Identify any errors in his work or in his reasoning. Step Work

Reasoning −4.5 + 4.2 + 5.6 − 7.3 Original problem 1 −4.5 + 4.2 + 5.6 + (−7.3) Additive inverse 2 −4.5 + (−7.3) + 4.2 + 5.6 Commutative property 3 [−4.5 + (−7.3)] + (4.2 + 5.6) Associative property 4 −11.8 + 9.8 Simplify 5 −21.6 Simplify (5 points) Step 1: He wrote −7.3 incorrectly as + (−7.3). Step 2: He identified changing the order of the numbers as the commutative property, which is incorrect. Step 3: He identified changing the grouping of the numbers as the associative property, which is incorrect. Step 5: He simplified incorrectly. WHICH IS INNCORECCT MARKING RIGHT ANSWER AS BRAINLIEST IF THWY AINT BRAINLYIEST TDAT MEEN THEY SUS WROGN
Mathematics
1 answer:
Llana [10]3 years ago
3 0

Answer:

it is the last one ( HE SIMPLYFIED INCORECCT)

Step-by-step explanation:

i took the test

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Someone plz help!!!!!!
adell [148]

1) 43

2) 21

step by step:

Both triangles are right triangle which means they're equal to 90.

1) 23+24+X= 90

47+x= 90

x= 90-47

X= 43

2) 30+39+X= 90

69+X= 90

X= 90-69

X= 21

6 0
3 years ago
The drama club is printing t-shirts for its members. The printing company charges a certain amount for each shirt plus a setup f
Helga [31]

The cost of each t-shirt is <u>$7</u>, using the equation formed from the given conditions.

In the question, we are given that the drama club is printing t-shirts for its members. The printing company charges a certain amount for each shirt plus a setup fee of $40.

We are aske to find the cost of each t-shirt if there are 21 students in the club and the t-shirt order costs a total of $187.

We assume the cost of one t-shirt to be $x.

Thus, the cost of printing 21 t-shirts = $21x.

The setup fee is given to be $40.

Thus, the total cost of printing 21 t-shirts for the dram club = $21x + 40.

But, we are given that the total cost is $187.

Thus, we get an equation,

21x + 40 = 187.

This equation can be solved as follows:

21x + 40 = 187,

or, 21x = 187 - 40,

or, 21x = 147,

or, x = 147/21,

or, x = 7.

Thus, the cost of each t-shirt is <u>$7</u>, using the equation formed from the given conditions.

Learn more about equations at

brainly.com/question/17473531

#SPJ9

7 0
2 years ago
Simplify completely quantity 12 x plus 36 over quantity x squared minus 4 x minus 21 and find the restrictions on the variable..
Softa [21]
To simplify the expression stated, it is better to write it in the numerical form. The statement is:

<span>quantity 12 x plus 36 over quantity x squared minus 4 x minus 21

The numerical form is:

12x+36 / (x</span>²-4x-21)

Simplifying,
12x+36 / (x<span>²-4x-21)
</span>12 (x+3) / (x+3)(x-7)

We can cancel the x+3 term, leaving only:
12/(x-<span>7)</span>
3 0
3 years ago
Read 2 more answers
The expression 4x + 5 can be used to find the cost of
Ivahew [28]

Answer:

ob) 4

Step-by-step explanation:

th coefficient is the number that multiplies a variable

7 0
4 years ago
Read 2 more answers
Solve the equation:<br><br> 3x-5      4x+1<br> ------- = --------<br> 2               4
Eduardwww [97]
Cross multiply 3x-5 with 4 and 4x + 1 with 2
Which it would give you 12x-20=8x+2 then solve for x
4 0
3 years ago
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