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34kurt
3 years ago
5

I need help please someone

Mathematics
1 answer:
emmasim [6.3K]3 years ago
4 0
<span>Anna learns in her science class that the human eye blinks an average of 4,200,000 times a year. What is this number expressed in scientific notation?</span>
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Points A, B, C, and D are the vertices of a square. Points E and F are the center of two congruent semicircles that are tangent
Masja [62]

Answer:

8 sq units

Step-by-step explanation:

to find the area of shaded region:

area of square minus sum of areas of each semi-circle

A(square) = 6² = 36

A (semi-circle) = πr²/2

= π3²/2

= 4.5π

Since there are two semi-circles, that makes one complete circle with an area of 9π

A(circle) ≈ 28 sq units

36-28 = 8 sq units

5 0
3 years ago
Read 2 more answers
How is solving 2x+c=d similar to solving 2x+1=9 for x? How are they different? How can you use x+c=d to solve 2x+1=9?
valentinak56 [21]

Answer:

No

Step-by-step explanation:

We can't use 2x + c = d for solving 2x + 1 = 9 . Here we can find the value of x from 2x + 1 = 9.

2x + 1 =9\\=>2x=9-1\\=>2x=8\\=>x=4

Putting the value of x in 2x + c = d :-

2x+c=d\\=>2*4+c=d\\=>8+c=d

But still we don't know the exact value of c & d . If in the question at least we could have got one exact value of either c or d , then we could find out the value of other variable.

3 0
4 years ago
Help 6th grade math i will give brainliest
Free_Kalibri [48]

Answer:

2 * 2 * 5 * 5, or 2^2 * 5^2, or 5^2 * 2^2

Step-by-step explanation:

You can use a factoring tree to find the prime factorization of 100.

                     +------ 100----------------+

                     |                                  |

                    2                           +---50---------+

                                                  |                    |

                                                  2          +----25----+

                                                               |               |

                                                               5              5

The prime factorization of 100 is 2 * 2 * 5 * 5, or 2^2 * 5^2, or 5^2 * 2^2

4 0
3 years ago
Read 2 more answers
Each day, Tally's baby sister eats 1 4 cup of rice cereal in the morning and 1 4 cup of rice cereal in the afternoon. Select the
Nadusha1986 [10]
She eats 2/4 every day so 1/2

it would take her 8 days to eat 4 cups
3 0
4 years ago
690x52 show your work
atroni [7]
690×52 show your work? 35,880
5 0
3 years ago
Read 2 more answers
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