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Afina-wow [57]
3 years ago
9

7-(-9)-18+(-19)+18.​

Mathematics
2 answers:
Travka [436]3 years ago
6 0

Answer:

-3

Step-by-step explanation:

7 - (-9) - 18 + (-19) +18

Remove the opposites

Remove the parentheses

7 + 9 - 19

Calculate

hammer [34]3 years ago
5 0

Answer:

The answer is -3

Step-by-step explanation:

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What is the value of the expression 8p4
Nady [450]

ANSWER

8P_4 = 1680

EXPLANATION

We use the formula

nP_r =  \frac{n!}{(n - r)!}

For

8P_4

and n=8, r=4.

8P_4=  \frac{8!}{(8- 4)!}

This simplifies to

8P_4=  \frac{8!}{4!}

We expand the numerator using factorial notation,

8P_4=  \frac{8 \times 7 \times 6 \times 5  \times 4!}{4!}

The common factors cancel out.

8P_4=  8 \times 7 \times 6 \times 5

8P_4= 1680

3 0
3 years ago
A 2,000 loan has an annual internet rate of 4.5% on the amount borrowed. How much time has elapsed in the interest is now $180?
Jlenok [28]

Answer:

2 years

Step-by-step explanation:

90 in 1 year, 180 in 2 years

6 0
3 years ago
Maths watch help me please thank you
Dovator [93]

Answer:

71 %

Step-by-step explanation:

Paper 1 :

65% of 120 = 0.65 X 120 = 78

Paper 2 :

80% of 80 = 0.8 X 80 = 64

Total Percentage:

Add the two scores 78 + 64 = 142

Add the what it was out of 120 + 80 = 200

Use (Score / Total marks available) X 100

(142 / 200) X 100 = 71

3 0
3 years ago
45/84 is it in simplest form
balandron [24]
The simplest form is 15/28
Correct me if I'm wrong. Hope this helps!
3 0
3 years ago
Given j(x) = x + 5, what is the value of j(12)?
yarga [219]

Answer:

j(12) = 17

General Formulas and Concepts:

<u>Pre-Algebra</u>

Order of Operations: BPEMDAS

  1. Brackets
  2. Parenthesis
  3. Exponents
  4. Multiplication
  5. Division
  6. Addition
  7. Subtraction
  • Left to Right

<u>Algebra I</u>

  • Function Notation

Step-by-step explanation:

<u>Step 1: Define</u>

j(x) = x + 5

j(12) is x = 12

<u>Step 2: Evaluate</u>

  1. Substitute in <em>x</em>:                    j(12) = 12 + 5
  2. Add:                                     j(12) = 17
8 0
3 years ago
Read 2 more answers
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