3 years ago

Simplify the expression 1.5y2+6.3+6y-3.9-4y+y2

Mathematics

1 answer:

Lena [83]3 years ago

8 0

Answer: $2.5y^{2} +2y+2.4$

Step-by-step explanation:

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67 minutes

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3 years ago

The formula for the area A of a triangle is A=(1/2)bh, where b is the length of the base and h is the height. Rearrange the form

zalisa [80]

Answer:

$b=\dfrac{2A}{h}$

Step-by-step explanation:

The formula for the area of a triangle is given by :

$A=\dfrac{1}{2}bh$ ...(1)

Where b is the length of the base and h is the height.

We need to find the value of b from the above formula.

Cross multiplying equation (1) we get :

$2A=bh$

Now dividing both sides by h. So,

$\dfrac{2A}{h}=\dfrac{bh}{h}\\\\b=\dfrac{2A}{h}$

So, the correct option is (D) i.e. $\dfrac{2A}{h}$ .

8 0

3 years ago

D is the centroid of △ABC. What is the value of x when GD=x+4 and GC=4x+5?

alexira [117]

Answer:

x = 7

Step-by-step explanation:

Because:

GD = x + 4

GC = 4x + 5

And D is the centroid of ABC

So GC = 3GD

<=> 4x + 5 = 3(x + 4)

<=> 4x + 5 = 3x + 12

<=> 4x - 3x = -5 + 12

<=> x = 7

Done!!

You ok?? :))

3 0

3 years ago

Which value for x makes the equation x -4.21 = 6.047 true? A. x = 10.68 C. X = 10.247 B. x = 10.257 D. x = 1.837

Anuta_ua [19.1K]

Answer:

C. X = 10.247

Step-by-step explanation:

X -4.21 = 6.047

just you will add 4.21 to both sides of the equation

X -4.21 + 4.21 = 6.047 + 4.21

X = 10.247

3 0

2 years ago

Read 2 more answers

Simplify the expression 1.5y2+6.3+6y-3.9-4y+y2​

Simplify the expression 1.5y2+6.3+6y-3.9-4y+y2