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4 years ago

It's PEMDAS please help

Mathematics

2 answers:

lapo4ka [179]4 years ago

8 0

Hello there,

15 - 20 / 2 • 4 + 20

15 - 10 • 4 + 20

15 - 40 + 20

-25 + 20

-5

Answer: -5

Hope I helped!

- Rose.

kicyunya [14]4 years ago

3 0

Answer:

A -5

Step-by-step explanation:

multiply and divide (left to right) = 20 / 2 x 4

Add and subtract (left to right) = -5

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6x + 15 = 8x + 45

sp2606 [1]

Answer:

the answer is A -15

Step-by-step explanation:

Hope this helps!

7 0

3 years ago

Read 2 more answers

[(8*9)] - (6*7)] -15

maks197457 [2]

Answer:

Step-by-step explanation:

Simplify the following:

8×9 - 6×7 - 15

8×9 = 72:

72 - 6×7 - 15

-6×7 = -42:

72 + -42 - 15

72 - 42 - 15 = 72 - (42 + 15):

72 - (42 + 15)

| 4 | 2

+ | 1 | 5

| 5 | 7:

72 - 57

| 6 | 12

| 7 | 2

- | 5 | 7

| 1 | 5:

Answer: 15

3 0

3 years ago

Read 2 more answers

Find the generating function for the sequence 1,-2,4,-8, 16, ...

kirill [66]

Answer:

$a(x)=\dfrac{1}{1+2x}$

Step-by-step explanation:

The generating function a(x) produces a power series ...

$a(x)=a_0+a_1x+a_2x^2+a_3x^3+\dots$

where the coefficients are the elements of the given sequence.

We observe that the given sequence has the recurrence relation ...

$a_0=1;a_n=-2a_{n-1} \quad\text{for n $>$ 0}$

This can be rearranged to ...

$a_n+2a_{n-1}=0$

We can formulate this in terms of a(x) as follows, then solve for a(x).

$\sum\limits^{\infty}_{n=1} {a_{n}x^n} =a(x)-a_0 \quad\text{and}\\\\\sum\limits^{\infty}_{n=1} {2a_{n-1}x^n} =(2x)a(x) \quad\text{so}\\\\\sum\limits^{\infty}_{n=1} {(a_n+2a_{n-1})x^n}=0=a(x)-a_0+2xa(x)\\\\a(x)=\dfrac{a_0}{1+2x}=\dfrac{1}{1+2x}$

The generating function is ...

a(x) = 1/(1+2x)

3 0

3 years ago

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Q6. NON-CALCULATOR<br> x + 2/3x +<br> x-2/2x =3

Mashutka [201]

in file

Step-by-step explanation:

7 0

2 years ago

-3 + 7

grin007 [14]

-3+7=4

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24-16=8

-14+6=-8

3+(-8)=-5

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6 0

3 years ago