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3 years ago

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What is the degree of the polynomial below? 7x6 +6x2 + 4x + 2

1 answer:

horsena [70]3 years ago

4 0

Answer:

7x6+6x2+4x+2

i am not sure if it is rite but there are no like terms

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Find the solution of this system of equations 10x-7y=-1 and -2x-7y=-25

Sergio039 [100]

Answer:

<h2>x = 2, y = 3 → (2, 3)</h2>

Step-by-step explanation:

$\left\{\begin{array}{ccc}10x-7y=-1\\-2x-7y=-25&\text{change the signs}\end{array}\right\\\underline{+\left\{\begin{array}{ccc}10x-7y=-1\\2x+7y=25\end{array}\right}\qquad\text{add both sides of the equations}\\.\qquad12x=24\qquad\text{divide both sides by 12}\\.\qquad x=2\\\\\text{Put it to the second equation}\\2(2)+7y=25\\4+7y=25\qquad\text{subtract 4 from both sides}\\7y=21\qquad\text{divide both sides by 7}\\y=3$

8 0

3 years ago

The law of cosines is used to find the measure of Z.

Shtirlitz [24]

Answer:

C. $Z=51^{\circ}$

Step-by-step explanation:

We have been given a triangle. We are asked to find the measure of angle Z using Law of cosines.

Law of cosines: $c^2=a^2+b^2-2ab\cdot \text{cos}(C)$ , where, a, b and c are sides opposite to angles A, B and C respectively.

Upon substituting our given values in law of cosines, we will get:

$16^2=19^2+18^2-2(19)(18)\cdot \text{cos}(Z)$

$256=361+324-684\cdot \text{cos}(Z)$

$256=685-684\cdot \text{cos}(Z)$

$256-685=685-685-684\cdot \text{cos}(Z)$

$-429=-684\cdot \text{cos}(Z)$

$\frac{-429}{-684}=\frac{-684\cdot \text{cos}(Z)}{-684}$

$0.627192982456=\text{cos}(Z)$

$\text{cos}(Z)=0.627192982456$

Now, we will use inverse cosine or arc-cos to solve for angle Z as:

$Z=\text{cos}^{-1}(0.627192982456)$

$Z=51.1566718^{\circ}$

$Z\approx 51^{\circ}$

Therefore, the measure of angle Z is approximately 51 degrees.

6 0

3 years ago

Read 2 more answers

What is the equation of the line that passes through the point (6,3) and has a slope of -1/3

astraxan [27]

Se necesitan los puntos que representen a Y1 y X1, si no no te puedo ayudar solo te puedo dar la formula

La formula para la ecuación es:

(Y-Y1)=m (X-X1)

6 0

2 years ago

Convent 16 weeks to seconds

sweet [91]

Answer:

9,676,800

Step-by-step explanation:

3 0

3 years ago

Read 2 more answers

Plz help me well mark brainliest if correct!!....

True [87]

Answer:

B) Fifth Grade Boys

Step-by-step explanation:

The far right green line represents the fifth grade boys, and you can see that this lines up right in the middle of 50 and 60.

8 0

2 years ago