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3 years ago

Somebody help me please

Mathematics

1 answer:

liberstina [14]3 years ago

6 0

Answer:

Step-by-step explanation:

The answer is A

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Which is greater? 670.9 or 670.008

Free_Kalibri [48]

Answer:

670.9

Step-by-step explanation:

because 670.9 is bigger and 670.008 has more 0's and 0's aren't greater

5 0

3 years ago

Find the area of each regular polygon. Round your answer to the nearest tenth if necessary.

tatuchka [14]

*I am assuming that the hexagons in all questions are regular and the triangle in (24) is equilateral*

(21)

Area of a Regular Hexagon: $\frac{3\sqrt{3}}{2}(side)^{2} = \frac{3\sqrt{3}}{2}*(\frac{20\sqrt{3} }{3} )^{2} =200\sqrt{3}$ square units

(22)

Similar to (21)

Area = $216\sqrt{3}$ square units

(23)

For this case, we will have to consider the relation between the side and inradius of the hexagon. Since, a hexagon is basically a combination of six equilateral triangles, the inradius of the hexagon is basically the altitude of one of the six equilateral triangles. The relation between altitude of an equilateral triangle and its side is given by:

$altitude=\frac{\sqrt{3}}{2}*side$

$side = \frac{36}{\sqrt{3}}$

Hence, area of the hexagon will be: $648\sqrt{3}$ square units

(24)

Given is the inradius of an equilateral triangle.

$Inradius = \frac{\sqrt{3}}{6}*side$

Substituting the value of inradius and calculating the length of the side of the equilateral triangle:

Side = 16 units

Area of equilateral triangle = $\frac{\sqrt{3}}{4}*(side)^{2} = \frac{\sqrt{3}}{4}*256 = 64\sqrt{3}$ square units

4 0

3 years ago

Distance Which expression could help you find the distance between (10, 4) and (–6, 4)? |10| + |–4| |10| + |4| |–6| + |4| |10| +

kenny6666 [7]

$\bf \boxed{(-6,4)}\stackrel{\textit{6 units}}{\rule[0.35em]{10em}{0.25pt}}0\stackrel{\textit{10 units}}{\rule[0.35em]{15em}{0.25pt}}\boxed{(10,4)}
\\\\[-0.35em]
~\dotfill\\\\
~\hfill |10|+|-6|~\hfill$

6 0

3 years ago

Read 2 more answers

Janice is dividing 1.92 divided by 6. Why does she exchange the place value blocks shown for 18 tenths and 12 ones ?

olga2289 [7]

9 Godinez me. 333 12

7 0

3 years ago

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Four times a number minus twice another number is -8. The sum of the two number is 19.Find the numbers

grigory [225]

1. To solve this exercise, you must make a system of equations.

2. You have that f<span>our times a number minus twice another number is -8:
</span>
4x-2y=-8

3. And t<span>he sum of the two number is 19:
</span>
x+y=19

4. As you can see, you have two equations:

4x-2y=-8 (i)
x+y=19 (ii)

5. Let's clear the "x" from the equation (ii):

x=19-y

6. Now, you need to susbtitute x=19-y into the equation (i):

4x-2y=-8
4(19-y)-2y=-8
76-4y-2y=-8
76-6y=-8
-6y=-8-76
-6y=-84
y=-84/-6
y=14

7. You must susbstitute y=14 into the equation (ii) and clear "x":

x+y=19
x+14=19
x=19-14
x=5

The answer is: 5 and 14

6 0

3 years ago