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3 years ago

15

Confused, thanks.

1 answer:

earnstyle [38]3 years ago

5 0

Yes, after applying the Pythagorean Theorem, use (a squared + b squared = c squared), where as; a and b, are any two angles and c is the hypotenuse or the longest side of the right triangle. In other words yes you can use a right triangle to find the distance between any to points on a coordinate plane using... the Pythagorean Theorem.

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9-3*1/3*98=<br><br> 6-*87/8+85647-552=<br><br><br> 254+968*8

sp2606 [1]

Answer:

don't you have a calculator? just use that

6 0

2 years ago

the width of a rectangle is 7 meters greater than its length.If the area of the rectangle is 170 square meters, write the quadra

Anika [276]

Answer:

$x^2+7x-170 = 0$

Step-by-step explanation:

To calculate an area of a rectangle, use the formula A=l*w. We know the width is 7m greater than the length. So w = 7 + x. So the area is A= (7+x)*x.

We also know the area is 170. Substitute this value for A and solve.

$170 = (7+x)(x)\\170 = 7x+x^2\\x^2+7x-170 = 0$

4 0

3 years ago

A ream of paper weighs 5 pounds and has dimensions of 8.5 inches by 11 inches by 2 inches.

devlian [24]

S = 2 (lw + lh + hw)
S = 2 ((8.5)(11) + (8.5)(2) + (11)(2))
S = 2 (93.5 + 17 + 22)
S = 2 (132.5)
S = 265 sq in

6 0

3 years ago

The surface area, S, of a sphere of radius r feet is S = S(r) = 4πr^2. Find the instantaneous rate of change of the surface area

vesna_86 [32]

This is the derivative of S with respect to r, evaluated at r=8.
dS/dr = 8πr
Substituting r=8 into the above gives the answer of 64π.

4 0

3 years ago

Cos(x/3)cos(x/3)=1/2(1+cos(2x/3))

TEA [102]

This follows from the half-angle identity for cosine.

$\cos^2\theta=\dfrac{1+\cos2\theta}2$

6 0

3 years ago

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