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melisa1 [442]
3 years ago
7

Solve 7.8+3.5w-1.5 for w = 6.8 using PEMDAS

Mathematics
1 answer:
VikaD [51]3 years ago
5 0
7.8+3.5(6.8)-1.5
7.8+23.8-1.5
31.6-1.5
30.1
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Can anyone please help i am stuck on this question?
ale4655 [162]

Answer:

8/17

General Formulas and Concepts:

<u>Trigonometry</u>

  • [Right Triangles Only] cos∅ = adjacent over hypotenuse

Step-by-step explanation:

<u>Step 1: Define</u>

We are given a right triangle. We can use trig to find the ratio.

<u>Step 2: Identify</u>

<em>POV from angle S</em>

Adjacent = 8

Hypotenuse = 17

<u>Step 3: Write</u>

  1. Substitute [cosine]:                    cos(s) = 8/17
5 0
3 years ago
A cylinder has radius r and height h. a. How many times greater is the surface area of a cylinder when both dimensions are multi
kondor19780726 [428]
To find it directly

A = 2 pi r h

A is proportional to rh

factor 2

A is multiplied by 2 * 2 = 4

factor 3

3 * 3 =9

factor 5

5 * 5 = 25

factor 10 

10 * 10 = 100

(b) the increase in A by factor x is x^2

c(20)^2 = 400 
3 0
3 years ago
Please help I need help
JulijaS [17]
The rate of change in this pattern is 2:1 comparing the change in 'y' to the change in 'x'.. this means that if you go form 33 to 51 ( an increase of 18), then the the increase from 16 to ? will be 9.  Therefore, ? = 16 + 9 or 25
? = 25
4 0
3 years ago
9+X+3X-5 simplify expression
Lelu [443]
4 + 4X is the expression simplified
3 0
3 years ago
If I am adding one positive number and one negative number, will the answer be positive or negative? What does it depend on?
maxonik [38]

It depends on which number has the greatest absolute value.

Think about it as money

If you owe me $10, this is shown as -10

Now  if I give you back 2 dollars  (+2), How much money do I still owe you.

The equation is -10+2

I still owe you 8 dollars which is portrayed as -8

Hope this helps :)

8 0
3 years ago
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