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2 years ago

Which would be the most appropriate way to estimate -6.1(0.22)? Check all that apply.

Mathematics

1 answer:

tatiyna2 years ago

5 0

Use rounding to get -6(0.2), and then multiply.

Use compatible numbers, such as -6(0.5), and then multiply.

Use front-end estimation to get -6(0.2), and then multiply.

Estimate -6.1(0.22)

Answer:

Use rounding to get -6(0.2), and then multiply.

Use front-end estimation to get -6(0.2), and then multiply.

Round the factors to the nearest whole number, and then multiply.

Step-by-step explanation:

Actual answer:

-6.1(0.22) = -1.342

Estimate answer:

-6 (.2) = 1.2

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Please answer soon I need this answer very quickly for math. Thank you!

Kazeer [188]

a. First five terms: 9,13,17,21,25

b. Sum of first 25 terms = 1425

c. The given sequence is an arithmetic sequence because the common difference between two consecutive terms is same.

Further explanation:

Given

Formula of sequence

$a_n=4n+5$

1. First 5 terms:

For first 5 terms, we have to put n=1,2,...5,

So,

$For\ n=1\\a_1=4(1)+5\\=4+5\\=9\\For\ n=2\\a_2=4(2)+5\\=8+5\\=13\\For n=3\\a_3=4(3)+5\\=12+5\\=17\\For\ n=4\\a_4= 4(4)+5\\=16+5\\=21\\For\ n=5\\a_5=4(5)+5\\=20+5\\=25\\First\ 5\ terms\ are: 9,13,17,21,25$

2. Sum of first 25 terms:

For that we have to find 25th term first

$a_{25} = 4(25)+5\\=100+5\\=105$

The formula for sum is:

$S_n=\frac{n}{2}(a_1+a_n)}\\Putting\ the\ values\\S_n=\frac{25}{2}(9+105)\\=12.5(114)\\=1425$

3. Type of sequence

The given sequence is an arithmetic sequence because the common difference between two consecutive terms is same.

i.e.

$d=4$

Keywords: Arithmetic sequence, Sum of arithmetic sequence

Learn more about arithmetic sequence at:

#LearnwithBrainly

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3 years ago

A point with coordinates (a, b) is plotted on a coordinated plane. The values of a and b can be any positive or negative integer

Diano4ka-milaya [45]

Answer:

Any negative and positive number can be your coordinates.

Step-by-step explanation:

As long as you don't have any restrictions as to what the coordinates can be, you're good to go!

Hope this helps!

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3 years ago

Sandy grew 8 turnips joan grew 6 turnips how many turnips did they grow in all

kumpel [21]

8 turnips + 6 turnips = 14 turnips together

6 0

3 years ago

Read 2 more answers

Ninety-five percent of what number is 33.25?

notka56 [123]

Answer:

Step-by-step explanation:

Answer is 35

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3 years ago

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An employment agency specializing in temporary construction help pays heavy equipment operators $138 per day and general laborer

prisoha [69]

Answer:

L = 2,

O = 31

Step-by-step explanation:

First using the givens, write out some formulas.

Heavy equipment operators = O

General laborers = L

O + L = 33
138O + 87L = 4044

Now use substitution, it doesn't matter which one you substitute.

O = -L +33
138( -L + 33 ) + 87L = 4044

Distribute and solve for L.

-138L + 4554 + 87L = 4044
-138L - 87L = 4044 - 4554
-225L = -510
L = -510/-225
L = 2

L = 2, meaning number of laborers employed is 2.

Now plug 2 = L into one of the original equations.

O + L = 33
O + 2 = 33
O = 33 - 2
O = 31

O = 31, meaning number of heavy equip. operators employed is 31.

4 0

3 years ago