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Tanya [424]
3 years ago
12

Hello I need help on it pls ​

Mathematics
1 answer:
Zepler [3.9K]3 years ago
8 0

Answer:

19.5

Step-by-step explanation:

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863 to the nearest 100​
Eduardwww [97]
I think it would be 900
8 0
3 years ago
Read 2 more answers
3. Represents the sets with a Venn diagram: U = {1,2,3,4,5,6,7,8,9, 10, 11, 12} A = {1,2,3,4,6, 12} B = {1,2,4,8}
damaskus [11]

Answer:

See explanation and picture attached

Step-by-step explanation:

A set can be described by<em> listing all of its elements</em>.  

For example, A = { 2, 4, 6, 8}, which we read as  

“A is the set whose elements are 2, 4, 6 and 8”.  

The four elements of the set are separated by commas, and the list is enclosed between curly brackets.  

A <em>set can also be described by writing a description of its elements</em> between curly brackets.  

Thus the set A above can also be written as  

A = { even natural numbers less than 9 }, which we read as  

“A is the set of even natural numbers less than 9”.  

A set can also be described graphically by using Venn diagrams, which are simply circle shaped drawings showing the elements inside.

In our case U={1,2,3,4,5,6,7,8,9,10,11,12} A={1,2,3,4,6,12} B={1,2,4,8}

See picture attached for the answer.

8 0
3 years ago
What is the missing length?<br> 10.2 cm<br> a<br> area=51 cm2
AleksAgata [21]

Answer:

a = 10 cm

Step-by-step explanation:

Area of triangle, A = 51 cm²

base, b = 10.2 cm

Let height of triangle be a cm

<em><u>Formula:-</u></em>

A=\dfrac{1}{2}\times a\times b

51=\dfrac{1}{2}\times a\times 10.2

a=\dfrac{51\times 2}{10.2}

a=10

hence, the missing length is 10 cm

4 0
3 years ago
Jim bought a round picnic table. The diameter of this table is 12. What is the area and circumference of Jim’s picnic table?
lianna [129]
The equation for area is pi times r^2.
Here the diameter is 12, so the radius would be 6. (Diameter is twice the radius.)
Substituted this is pi times 6^2.
The area for the picnic table is about 113.097
______________________________________

The equation for circumference is 2 times pi times r.
Substitute, 2 times pi times 6.
The circumference is about 37.699
4 0
3 years ago
Read 2 more answers
Solve the given system of equations. 2y= -x+9 , 3x-6= -15
poizon [28]

Answer:

<h2>x = -3, y = 6 → (-3, 6)</h2>

Step-by-step explanation:

\left\{\begin{array}{ccc}2y=-x+9\\3x-6=-15&\text{add 6 to both sides}\end{array}\right\\\left\{\begin{array}{ccc}2y=-x+9\\3x=-9&\text{divide both sides by 3}\end{array}\right\\\left\{\begin{array}{ccc}2y=-x+9\\x=-3\end{array}\right\qquad\text{put the value of x to the first equation}\\\left\{\begin{array}{ccc}2y=-(-3)+9\\x=-3\end{array}\right\\\left\{\begin{array}{ccc}2y=3+9\\x=-3\end{array}\right\\\left\{\begin{array}{ccc}2y=12&\text{divide both sides by 2}\\x=-3\end{array}\right\\\left\{\begin{array}{ccc}y=6\\x=-3\end{array}\right

8 0
3 years ago
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