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3 years ago

What is seven and one fifth minus four and five eighths? 01 7/8 2 23/40 3 3/8 4 1/4

Mathematics

2 answers:

dalvyx [7]3 years ago

8 0

Answer:

(7+1÷5)−(4+5÷8) = 2 23/40 B

Step-by-step explanation:

7 1/5 - 4 5/8

Veronika [31]3 years ago

8 0

Step-by-step explanation:

7 1/5 - 4 5/8

= 36/5 - 37/8

Taking LCM

= 288/40 - 185/40

= 103/40

= 2 23/40

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What is the sum of series is numbers 64&66 ?<br> Using the summation notation

iragen [17]

Answer:

64. 6138

66. 8.078125

Step-by-step explanation:

Let's take it one number at a time.

For number 64:

$6(2)^{1-1}=6$

$6(2)^{2-1}=12$

$6(2)^{3-1}=24$

$6(2)^{4-1}=48$

$6(2)^{5-1}=96$

$6(2)^{6-1}=192$

$6(2)^{7-1}=384$

$6(2)^{8-1}=768$

$6(2)^{9-1}=1536$

$6(2)^{10-1}=3072$

Sum = 6 + 12 + 24 + 48 + 96 + 192 + 384 + 768 + 1536 + 3072

Sum = 6138

For number 66:

$12(-\frac{1}{2})^{0}=12$

$12(-\frac{1}{2})^{1}=-6$

$12(-\frac{1}{2})^{2}=3$

$12(-\frac{1}{2})^{3}=-1.5$

$12(-\frac{1}{2})^{4}=0.75$

$12(-\frac{1}{2})^{5}=-0.375$

$12(-\frac{1}{2})^{6}=0.1875$

$12(-\frac{1}{2})^{7}=-0.0078125$

$12(-\frac{1}{2})^{8}=0.046875$

$12(-\frac{1}{2})^{9}=-0.0234375$

Sum = 12 + -6 + 3 + -1.5 + 0.75 + -0.375 + 0.1875 + -0.0078125 + 0.046875 + -0.0234375

or to make things simpler:

Sum = 12 - 6 + 3 - 1.5 + 0.75 - 0.375 + 0.1875 - 0.0078125 + 0.046875 - 0.0234375

Sum = 8.078125

4 0

3 years ago

Which statement can you use to conclude that the relationship must be non-proportional

Deffense [45]

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3 years ago

Write 9020000 in standard form?

dolphi86 [110]

Answer:

9.02 x 10^6

Step-by-step explanation:

hope this helps!

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3 years ago

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zalisa [80]

The answer is
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3 years ago

(x3 + x4– 3x5– 8) + (-9x5 + x2)

Eduardwww [97]

Answer:

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Step-by-step explanation:

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2 years ago