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Volgvan
2 years ago
5

How many 4 digit palindromes contain both the digits 1 and 2

Mathematics
1 answer:
Norma-Jean [14]2 years ago
8 0

What a clever sneaky little problem !

There can only be two of them:    1221  and  2112 .

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The diagram shows a logo made from 3 circles.
Cloud [144]

Answer:

% area of the shaded region = 33%

Step-by-step explanation:

Radius of the middle circle = 7 cm

Radius of the inner circle = 4 cm

Area of the middle circle = πr²

                                          = π(7)²

                                          = 49π

   Area of the inner circle = π(4)²

                                           = 16π

Area of the shaded region= 49π - 16π

                                            = 33π

Area of the outermost circle = π(10)²

                                               = 100π

% area of the shaded region = \frac{\text{Area of the shaded region}}{\text{Area of the inner circle}}\times 100

                                                = \frac{33\pi }{100\pi }\times 100

                                                = 33%

Therefore, area of the shaded region is 33% of the complete logo.

3 0
3 years ago
Felicia bought 3 feet of ribbon for a project. she needs to cut the ribbon into 6 equal pieces. how long will each ribbon be?
anastassius [24]
3feer is 36 inches

36/6= 6 inches
6 0
2 years ago
Write in point-slope form an equation of the line that passes through the point (8, 9) with slope 7.
Lina20 [59]

Answer:

<h2>y=7x-47</h2>

Step-by-step explanation:

(8,9)=(x1,y1) \\ m=7 \\ y−y1=m(x−x1) \\ y−9=7(x−8)

y - 9 = 7x - 56 \\ y = 7x - 56 + 9 \\ y = 7x - 47

8 0
3 years ago
John jogged 4 1/2 miles. Susan jogged 1/4 of the miles that John jogged. How many miles did Susan jog?
Kobotan [32]

Answer:

Susan jogged 1 1/8 miles

Step-by-step explanation:

4 1/2= 18/4.   18/4 ÷ 1/4= 1.125= 1 1/8

6 0
3 years ago
Round 13.2 to a whole number
omeli [17]
13 because decimal is 4 or below let it rest or 5 or more go up one more
8 0
3 years ago
Read 2 more answers
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