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miss Akunina [59]

2 years ago

12

Evaluate u + xy, for u = 2, x = 9, and y = 6. A 17 B 56 C 24 D 66

2 answers:

dimaraw [331]2 years ago

7 0

The answer is B. 56
Hope that helps!

gtnhenbr [62]2 years ago

6 0

In equations like this, you could use PEMDAS- Parentheses, Exponents, Multiplication, Division, Addition, and Subtraction in that order. Since there are no parentheses or exponents you can go to multiplication. Since x=9 and y=6, you multiply x(9) and y(6) to get 54. Now you can add since there is no division or subtraction involved. 54+ u(2) = 56. So u + xy = B. 56

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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

2 years ago

Work out the volume of a cuboid 2cm by 4cm by 5cm

andrew-mc [135]

For a cuboid's volume you simply go length x width x heigth so 2x4x5 so it's 40.

3 0

3 years ago

Read 2 more answers

Emma buys packets of coloured beads.

Black_prince [1.1K]

Answer:

5 purple beads

8 red beads

4 blue beads

Step-by-step explanation:

Find the common factor of 8 5 and 10

Which is 40

8 * 5 = 40

5 * 8 = 40

4 * 10 = 40

8 0

3 years ago

Cora's dad has asked Cora and her little brothers to rake the leaves in their yard. They rake all afternoon and fill a number of

Sever21 [200]

Answer:

11

Step-by-step explanation:

because they empty 6 bags and there are 5 bags left to that is 11 all together

4 0

2 years ago

Answers ASAP plsssssss

ASHA 777 [7]

Answer:

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6 0

2 years ago