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3 years ago

Subtract (x² + 5x – 6) – (3x^2 – 7x + 1). What is the difference?

Mathematics

1 answer:

Lorico [155]3 years ago

4 0

1. Distribute the Negative Signs
2. Combine like terms
-2x^2 + 12x-7

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Find the surface area and volume of the figure

cupoosta [38]

The surface area is 565.4ft² and the volume is 1,017.8ft³

Hope this helps :)

If you want me to show you how I got it just let me know

6 0

3 years ago

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Type the missing numbers in this sequence: <br>93, __, __, 87, 85, 83

Phantasy [73]

Answer:

if you noticed, it is reduces by 2

so the sequence would be

93, 91, 89, 87, 85, 83

-------------------------------------------------

Hope this helps!

5 0

2 years ago

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What is 42.5% of 200?

Diano4ka-milaya [45]

The answer would be 85, here's why
200/x=100/42.5
(200/x)*x=(100/42.5)*x
200=2.3529411764706*x
200/2.3529411764706=x
85=x
x=85

6 0

2 years ago

Find the value of d.

Ket [755]

First find the value or (DEA)
For this you will have to use the Pythagorean theory,
${a}^{2} + {b}^{2} = {c}^{2}$
C is mainly the hypotenuse,
Meaning you either want to find A or B,

Since the hypotenuse has two segments, both values are 10, then just add them together making it 20,

Then 16 will be A or B, in this case it will be A,

To find a you must first move A to the other side by doing the opposite,
${b}^{2} = {c}^{2} - {a}^{2}$
Now plug in the values,
${b}^{2} = {20}^{2} - {16}^{2}$
${b}^{2} = 400 - 256$
${b}^{2} = 144$
Now just find the square root of both factors,
$\sqrt{ {b}^{2} } = \sqrt{12}$
The value of (DEA) is,
$b = 12$
Now we want to find (d)
Since 12 is the value of the base, then divide it 2 to find (DE), after just repeat the whole process but with the value of hypotenuse 10 instead of 20 since we want to find the smaller triangle,
${a}^{2} = {c}^{2} - {b}^{2}$
Now plug in the value
${a}^{2} = {10}^{2} - {6}^{2}$
${a}^{2} = 100 - 36$
${a}^{2} = 64$
Now find the square root of both factors,
$\sqrt{ {a}^{2} } = \sqrt{64}$
$a = 8$

The value of (d) is (8)

Hope this helped
:D

4 0

2 years ago

Find the value of X.

Vesna [10]

Answer:

x = 3

Step-by-step explanation:

First set up the problem like this:

14x-17 = 8x + 1

Now we subtract 14x from each side. This leaves us with:

-17 = 6x+1

Now we need subtract 1 from each side, leaving us with:

-18 = -6x

And now we divide each side by 6x, leaving us with.

3 = x.

And if you insert three into both of the equations, it will result in 25.

(Hope this helped!)

8 0

2 years ago