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Sveta_85 [38]
2 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]2 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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I don’t know the answer to the question in the picture above
Andrej [43]

Answer:

x=-7/4

Step-by-step explanation:

4x+7=0

4x=-7+0

4x=-7

x=-7/4

8 0
3 years ago
How do I solve this? It says find the value of x, then find the angle measures of the polygon.
Anni [7]
180 = 65 + (x-5) + x
-65     -65

115 = x - 5 + x

115 = 2x - 5

2x = 120

x = 60

The angle measures are 65, 60, and 55 degrees.

4 0
4 years ago
Use the information in the diagram to determine the height of the tree to the nearest foot.
algol13

Answer:

The correct option is A. The height of tree is 60 ft.

Step-by-step explanation:

From the given figure it is noticed that the building is creating a right angle triangle from a point and the tree divides the hypotenuse and base in two equal part.

According to midpoint theorem of triangle: In a triangle, if a line segment connecting the midpoints of two sides, then the line is parallel to third side. The length of line segment is half of the length of third side.

Using midpoint theorem of triangle, we can say that the length of tree is half of the building.

Tree=\frac{1}{2}\times Building

Tree=\frac{1}{2}\times 120

Tree=60

Therefore correct option is A. The height of tree is 60 ft.

5 0
3 years ago
Type the correct answer in each box. Use numerals instead of words. If necessary, use / for the fraction bar(s).
Lunna [17]

Answer:

<u>3 days</u>, <u>27</u>

Step-by-step explanation:

After 3 days :

  • 3³ = 27 belts
  • 4(3) + 15 = 12 + 15 = 27 belts

After 3 days, the number of belts and wallets sold will be the same, equal to 27.

3 0
2 years ago
What is 15/72 in simplest form
ss7ja [257]
15/72=5/24
Divide both by three.

:)
4 0
3 years ago
Read 2 more answers
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