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Sergeeva-Olga [200]

3 years ago

5

Please help. Is algebra.

1 answer:

Vedmedyk [2.9K]3 years ago

3 0

The answer for question 4 is C and the answer for question 5 is D.

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john likes to walk the steps of the department he works for during lunch break. There are s steps in his department. Today John

xenn [34]

Ask your teacher he should fish d comb hangdog Shabbat

3 0

1 year ago

What is the sign of 3 x y 3xy3, x, y when x > 0 x>0x, is greater than, 0 and y < 0 y<0

Colt1911 [192]

Answer:

The sign is negative

Step-by-step explanation:

Given

$Expression = 3xy$

$x > 0$

$y$

Required

Determine the sign

The expression can be split into 3 factors

$(3) (x) (y)$

If x > 0 then x is positive and If y < 0 then y is negative

So, the expression becomes:

$(+3) (+x) (-y)$

<em />

Leave only signs

$(+) (+) (-)$

$+ * + = -$

So, we have:

$(+*+) (-)$

$(+) (-)$

$+ * - = -$

So, we have:

$(+) (-) = -$

<em>Hence, the sign of the expression is negative</em>

<em></em>

Take for instance;

$x = 2$

$y = -4$

The expression would be:

$3 *2 * - 4 =-24$ -- negative

4 0

2 years ago

(x-1)(x-3)(x+5)(x+7)=297

mihalych1998 [28]

First simplify the expression into polynomial form,

$(x-1)(x-3)(x+5)(x+7)=297$

$x^4+8x^3-10x^2-104x+105=297$

$x^4+8x^3-10x^2-104x-192=0$

Now factor into,

$(x-4)(x+8)(x^2+4x+6)=0$

Which means the solutions are,

$x-4=0\implies\boxed{x_1=4}$

$x+8=0\implies\boxed{x_2=-8}$

and then two complex solutions because determinant of the third factor $D\lt0$ ,

$x^2+4x+6=0$

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

$(x+2)^2=-2\implies\boxed{x_3=i\sqrt{2}-2},\boxed{x_4=-i\sqrt{2}-2}$

Hope this helps :)

5 0

2 years ago

Read 2 more answers

Through the point (5,1) with a slope of 4/5

Nataly_w [17]

Answer:

y-1=4/5(x-5)

Step-by-step explanation:

y-1=4/5(x-5)

4 0

3 years ago

Whats in the middle of 32 and 28

aleksley [76]

Answer:

30

Step-by-step explanation:

5 0

3 years ago