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3 years ago

Full working out for this question please.

Mathematics

2 answers:

ludmilkaskok [199]3 years ago

7 0

Answer:

option d.28.8 cm^2

Step-by-step explanation:

Area of shaded region=1/2bh

=1/2×12.8×4.5

=28.8

OlgaM077 [116]3 years ago

7 0

Answer:

d 28.8cm2

Step-by-step explanation:

1/2BH

1/2() 12.8() 4.5

28.8

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What is the correct equation

Andrej [43]

Answer: y = 0.4x

In fraction form, this is y = (2/5)x

================================================

Explanation:

For each row, divide the y over x values

Row One: y/x = 0.8/2 = 0.4
Row Two: y/x = 4/10 = 0.4
Row Three: y/x = 6/15 = 0.4
Row Four: y/x = 10/25 = 0.4

We end up with the same thing each time.

Since y/x = 0.4, this rearranges to y = 0.4x

Alternatively, you can write the equation as y = (2/5)x because 2/5 = 0.4

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3 years ago

Rewrite in simplest terms (-9x-2y)+(4x-5y)

Evgesh-ka [11]

Answer:

-5x - 7y

Step-by-step explanation:

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3 years ago

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F(x)=5^x+1 what’s the rate of change between x=0 and x=4

nalin [4]

Answer:

156

General Formulas and Concepts:

Pre-Algebra

Order of Operations: BPEMDAS

Brackets
Parenthesis
Exponents
Multiplication
Division
Addition
Subtraction

Left to Right

Algebra I

Functions
Function Notation
Average Rate of Change: $\displaystyle \displaystyle \frac{f(b) - f(a)}{b - a}$

Step-by-step explanation:

Step 1; Define

Identify

f(x) = 5ˣ + 1

Interval x [0, 4] →b = 4, a = 0

Step 2: Find Rate of Change

Substitute in variables [Average Rate of Change]: $\displaystyle \displaystyle \frac{f(4) - f(0)}{4 - 0}$
[Average Rate of Change] Substitute in x [Function f(x)]: $\displaystyle \displaystyle \frac{(5^4 + 1) - (5^0 + 1)}{4 - 0}$
(Parenthesis) Evaluate exponents: $\displaystyle \displaystyle \frac{(625 + 1) - (1 + 1)}{4 - 0}$
(Parenthesis) Add: $\displaystyle \displaystyle \frac{626 - 2}{4 - 0}$
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Divide: $\displaystyle \displaystyle 156$

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3 years ago

Multiply 4x(-3x - 5)

Scilla [17]

Using the distributive property the product is -12x-20. To distribute you take the numbers and or variables outside of the paranthesis and multiply it by each one in the parenthesis such that 4x is multiplied by -3x getting -12x and multiplying 4x by -5 and the product is -20x and all together the answer is -12x-20

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3 years ago

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Quadrilaterals Q and P are similar. What is the scale factor of the dilation that takes Q to P

aalyn [17]

Answer:

0.8

Step-by-step explanation:

The scale factor that takes Q to P

Here, we want to go from Q to P

To get this, we simply divide what we have in P by what we had in Q

Hence, what we do here is;

2/2.5 or 4/5 = 0.8

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3 years ago