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MissTica
3 years ago
11

Which expression is equivalent to 880 • (10- 1/2)?

Mathematics
1 answer:
Akimi4 [234]3 years ago
6 0

Answer: (100 • 8 + 80) • (7.5 +2)

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Why are the elements placed into groups/families?
VashaNatasha [74]

Answer:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

Step-by-step explanation:

5 0
3 years ago
a 50 centermeter piece of wire is bent into a circle what is the area of this circle round to the nearest whole number use 3.14
VikaD [51]
When a wire is bent to form a circle then its length represents the circumference of the circle formed. Therefore in our case the circumference of the circle is 50 cm. we can use this to determine the radius of the circle and then determine the area. Circumference of a circle is given by \pi × diameter, (\pi = 3.142)
thus diameter will be given by 50 cm ÷ 3.142 = 15.9134 cm
the radius will be 15.9134 ÷2 = 7.9567 cm or ≈ 7.96 cm
The area of a circle is given by \pi × square of radius
Area = 3.142 × 7.96×7.96 = 199.0821 square cm
Thus the area of the circle formed is ≈ 199.08 square cm ( 2 decimal places)
6 0
2 years ago
Read 2 more answers
Match each variable with what it represents in a sequence formula. 1. r the value of the first term 2. d the value of the nth te
irakobra [83]

Answer:

r is the common ratio (in geometric sequence)

d is the common difference (in arithmetic sequence)

n is the term number

a1 is the value of the first term

an is the value of the nth term

Step-by-step explanation:

arithmetic sequence formula:

an=a1+d(n-1)

geometric sequence formula:

an=a1•(r)^(n-1)

8 0
3 years ago
Can someone help me
mafiozo [28]
If you need to you can write it out. the answer is X=14

5 0
3 years ago
True or false !!!<br><br> T or F
trapecia [35]
Tan x = opp/adj

For angle C, opp = 4, and 3 = adj, so

tan C = 4/3

Answer: False
6 0
2 years ago
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