3 years ago

Can some one please help me with my math and tell me if it’s correct thanks

Mathematics

1 answer:

crimeas [40]3 years ago

8 0

Yes, looks very correct.

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Solve 80% of x = 100 or 0.8x = 100

suter [353]

Answer:

125

Step-by-step explanation:

divide both sides of the equation by 0.8

0.8÷0.8=0.8÷100

any expression divided by 1 is itself

x=100÷0.8

divide the numbers

100÷0.8=125

125 is your answer

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3 years ago

Which function models the area of a rectangle with side lengths of 2x - 4 units and x + 1 units?

aalyn [17]

Answer:

Area of rectangle, $f(x)=2x^2-2x-4$ .

Step-by-step explanation:

We are given with side lengths of a rectangle are (2x-4) units and (x+1) units. It is required to find the area of rectangle.

The area of a rectangle is equal to the product of its length and breadth. It is given by :

$A=L\times B$

Let us consider, L = (2x-4) units and B = (x+1) units

Plugging the side lengths in above formula:

$A=(2x-4)\times (x+1)$

$A=2x^2+2x-4x-4\\\\A=2x^2-2x-4$

So, the function that models the area of a rectangle is $f(x)=2x^2-2x-4$ .

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3 years ago

What is -a-2 if a = -5?

Vladimir79 [104]

Answer:

Step-by-step explanation:

-(-5) -2

5 - 2

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3 years ago

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6x-9=y ; y=-3x linear equations solution for x and y I need help can someone explain

snow_lady [41]

The answer is
x = 1 and y = -3
<span>[1] 6x-9=y [2] y=-3x</span>

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4 years ago

Find the inequality represented by the graph

Nuetrik [128]

Answer:

y>=1*x+2

Step-by-step explanation:

y>=k*x+n

we know that 2=k+n and 0=-2k+n

so 4=2k+n and 0=-2k+n

now 4=2n so n=2

now k=1

so y>=1*x+2

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3 years ago

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