4 years ago

Find the sum of the sequence. 39 +40 +41 +42 + ... + 138

Mathematics

1 answer:

Elis [28]4 years ago

6 0

Answer:

Sol1 you can use "first(first+last)/2" is 138(138+1)/2 - 38(38+1)/2 = 8850

Sol2 or you can look this 39+40+41+....+100+(100+1)+(100+2)+....+(100+38) = 1+2+3+.....+99+100+100(38) = 5050+3800 =8850

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kakasveta [241]

(-1.5,2.5) is the point where A is on the coordinate plane.

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3 years ago

Read 2 more answers

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QveST [7]

Answer:

x = 0.954

Step-by-step explanation:

We apply pythagorean to find x

(4-x)² = 1.2² + 2.8²

(4-x)² = 9.28

✓(4-x)² = ✓(9.28)²

4 - x = 3.046

- x = 3.046 - 4

- x = -0.954

x = 0.954

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3 years ago

PLEASE HELP ASAP!!! I NEED CORRECT ANSWERS ONLY PLEASE!!! I NEED TO FINISH THESE QUESTIONS BEFORE MIDNIGHT TONIGHT.

Artemon [7]

Yo sup??

we can solve this question by applying trigonometric ratios

cos59=CB/CD

CD=CB/cos59

=7.8

Hope this helps.

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3 years ago

The veterinarian weighed Oliva's new puppy, Benz, on a defective scale.

Mrrafil [7]

Answer:

$\boxed{x = 10.28 \%}$

Step-by-step explanation:

$\frac{(26.75)x}{100} = 2.75 \\ \boxed{x = 10.280373832}$

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3 years ago

Amaia purchased two blouses and a skirt for a total of $32. The sales tax rate is 8%. How much total sales tax will Amaia pay on

Lubov Fominskaja [6]

Answer:

2.56

Step-by-step explanation:

8% of 32 is 2.56

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3 years ago