3 years ago

Find all zeros x^3-x^2-x+1=0

Mathematics

1 answer:

densk [106]3 years ago

3 0

I think there is only one 0. If x=2, then 3 does not equal 0.

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Compute $\sqrt{25^2-7^2}$.

EastWind [94]

Answer:

Step-by-step explanation:

$\sqrt{25^2-7^2}\\\\=\sqrt{(25-7)(25+7)}\\\\=\sqrt{18(32)}\\\\=\sqrt{9*2*2^5}\\\\=\sqrt{3^2\cdot 2^6}\\\\=\sqrt{(3\cdot2^3)^2}\\\\=3\cdot2^3\\\\=3\cdot8\\\\=24$

5 0

2 years ago

the height of an equivalent triangle is 15cm and it's perimeter is 36cm find the area of the triangle

OlgaM077 [116]

Answer:

The area is 72 cm².

Step-by-step explanation:

Since it is equivalent triangle

h = b

so,

b + b + b (since all sides are equal)= 36 cm

3b = 36 cm

or, b = 36/3

so, b = 12 cm

area of triangle = (1/2)×b×h

= (1/2)×12cm×12cm

= 6cm × 12cm

= 72 cm²

4 0

2 years ago

6x - 10y = -16<br><br> x + 20y = 19

Lena [83]

This may be the right answer: x=-1 y=-11/5

4 0

2 years ago

What is the value of the expression x + (–y) when x = –2.3 and y = –5.9? A. –8.2 B. –3.6 C. 3.6 D. 8.2

11Alexandr11 [23.1K]

Now it would be
-2.3+(-5.9)

now just add those two together
and u get -8.2
So the answer is A

7 0

2 years ago

Please help, I need it soon.

nadya68 [22]

Answer is : 8v^3+ 14v^2+11v+3
For cubic feet

Solution

Formula : volume base area x height

So base area = 4v^2 +5v+3
Height = 2v+1

So multiply

Volume =(4v^2+5v+3) x(2v+ 1)

The rest is below

7 0

2 years ago