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2 years ago

Question 20 please help

Mathematics

1 answer:

Luda [366]2 years ago

5 0

I guess the answer is C or A

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The sum of 5.9 and -7.2 is positive zero negative

Thepotemich [5.8K]

Answer:

Negative

Step-by-step explanation:

It would be -1.3. Because you know? You add?

4 0

2 years ago

Read 2 more answers

Determine the rate of change between the points (-1,-1) and (1,-1).

AVprozaik [17]

Answer:

$\displaystyle m = 0$

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Coordinate Planes

Coordinates (x, y)
Slope Formula: $\displaystyle m = \frac{y_2 - y_1}{x_2 - x_1}$

Step-by-step explanation:

*Note:

Rate of change is slope.

Step 1: Define

Identify.

Point (-1, -1)

Point (1, -1)

Step 2: Find slope m

Simply plug in the 2 coordinates into the slope formula to find slope m.

Substitute in points [Slope Formula]: $\displaystyle m = \frac{-1 + 1}{1 + 1}$
[Order of Operations] Simplify: $\displaystyle m = \frac{0}{2}$
Simplify: $\displaystyle m = 0$

4 0

2 years ago

Starting on Day 1 with 1 jumping jack, Kiera doubles the number of jumping jacks she does every day. How many jumping jacks will

kolbaska11 [484]

Answer:

The answer is 512

Day 1:1

Day 2:2

Day 3:4

Day 4:8

Day 5:16

Day 6:32

Day 7:64

Day 8:128

Day 9:256

Day 10:512

5 0

3 years ago

When is the product of two nonzero integers less than or equal to both of the two factors

aleksley [76]

The answeris equall to because they are the same #

5 0

3 years ago

Could someone please answer question b) ii) ? The question is on the attached image.

mel-nik [20]

Answer:

b) i) Curve A

ii) - 1.75

iii) x = 1 - √5 or x = 1 + √5

Step-by-step explanation:

b) i) We are given a function y = x² - 2x - 3 and the graph of this function is also shown in the side diagram.

The equation can be rearranged to y = (x - 1)² - 4

⇒ (x - 1)² = y + 4

Therefore, this is an equation of a parabola having the vertex at (1,-4) point and its axis is parallel to the positive y-axis.

So, the curve A represents the equation given. (Answer)

ii) Now, at x = 2.5, f(x) = 2.5² - 2 × 2.5 - 3 = - 1.75 (Answer)

iii) When y = 1, then x² -2x - 3 = 1

⇒ x² - 2x - 4 = 0

⇒ (x - 1)² - 5 = 0

⇒ (x - 1)² - (√5)² = 0

⇒ (x - 1 + √5)(x - 1 - √5) = 0

⇒ x = 1 - √5 or x = 1 + √5 (Answer)

3 0

3 years ago