4 years ago

Factor 8a^2-2a^2 form of the polynomial ????

Mathematics

1 answer:

Naily [24]4 years ago

6 0

$8a^2-2a^2$

$= 6a^2$

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Solve the system x-z=5, 2x+y= 7, y+3z=12

Wewaii [24]

x,z,y = 20,15,-33

i think thats it im sorry

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3 years ago

Find the perimeter of the triangle

vredina [299]

We can find the area of the big triangle, and subtract it from the small 4 x 2 triangle.

bh/2
3*8/2
12

bh/2
2*4/4
4

12 - 8
4 unit²

To find the perimeter:
a² + b² = c²
9 + 64 = c²
73 = c²
√73 = c

√73 + 3 + 8 + 2 + 4
√73 + 17

Hope this helps!

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3 years ago

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3 years ago

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8) During a clearance sale, a keyboard that normally sells for $49.99 is discounted for $34.99. What is the percent discount?

olganol [36]

The percentage discount is 80%

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I hope this helps.

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3 years ago

Estimate the values to complete the table.

lbvjy [14]

Answer:

Step-by-step explanation:

For angle C,

cos(∠C) = $\frac{\text{Adjacent side}}{\text{Hypotenuse}}$ = 0.97

sin(∠C) = $\frac{\text{Opposite side}}{\text{Hypotenuse}}$ = 0.26

tan(∠C) = $\frac{\text{Adjacent side}}{\text{Adjacent side}}$ = 0.27

Therefore, from the triangle ABC,

cos(∠A) = cos(90° - ∠C)

= sin(∠C)

= 0.26

sin(∠A) = sin(90 - ∠A)

= cos(∠A)

= 0.97

tan(∠A) = $\frac{\text{sinA}}{\text{cosA}}=\frac{0.97}{0.26}$

= 3.73

Angle $\frac{\text{Adjacent side}}{\text{Hypotenuse}}$ $\frac{\text{Opposite side}}{\text{Hypotenuse}}$ $\frac{\text{Opposite side}}{\text{Adjacent side}}$

A 0.26 0.97 3.73

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3 years ago