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3 years ago

PLEASE HELP ME.............

Mathematics

1 answer:

Brums [2.3K]3 years ago

5 0

Answer:

$g(x)=3x^2$

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Sketch the curve with the given vector equation. Indicate with an arrow the direction in which t increases. r(t) = 4 cos(t)i + 4

slega [8]

Answer:

The equation to this question is " $x^2+y^2=16$ "

Step-by-step explanation:

Given value:

$\to r(t) = 4 \cos (t)i + 4 sin(t)j + k\\where \\\\\to x(t)= 4 \cos t\\\to y(t) = 4 \sin t\\\to z(t)=1\\$

$\to x^2+y^2= 16 \cos^2 t +16 \sin^2 t\\\\\to x^2+y^2= 16 (\cos^2 t +\sin^2 t)\\\\\therefore (\cos^2 t +\sin^2 t =1)\\\\\to x^2+y^2= 16 (1)\\\\\to x^2+y^2= 16\\\\\to z=1$

So, the curve $r(t) = 4 \cos (t)i + 4 sin(t)j + k$ is basically a circle, which is defined in the attachment file.

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3 years ago

Kelly bought a book of 20 stamps. She has used 80% of them. A. How many stamps has Kelly used? B. How many stamps does she have

jok3333 [9.3K]

80% of 20 is 80/100 x 20 = 16

So, kelly has used 16 stamps, and has 4 left

4 0

3 years ago

Read 2 more answers

a football team lost 5 yards on each of 3 plays. Explain how you could use a number line to find the teams change in feild posti

jarptica [38.1K]

You would place a #line going from negatives on left to positive on right then place a point at positive 5 and go back 5, 3 times

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3 years ago

Six times a number is greater than 20 more than that number. What are the possible values of that number? On-4 On>4 20 On>

Vaselesa [24]

Answer:

a > 4

Step-by-step explanation:

$6a > 20 + a \\ collect \: like \: terms \\ 6a - a > 20 \\ then \: add \\ 5a \: > 20 \\ divide \: both \: sides \: by \: 5 \\ \frac{5a}{5} > \frac{20}{5} \\ a > 4$

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2 years ago

A 12-foot ladder rests against the side of a house. The base of the ladder is 3 feet away from the side of the house. How high a

Triss [41]

Answer:

3.root 15 feet

Step-by-step explanation:

To solve this problem, we will use Pythagorean’s theorem. Now let’s visualize a right angled triangle in which the hypotenuse stands for the total ladder length and the base of the ladder standing away from the wall is say the adjacent.

The length of the ladder is the opposite which is the last side of the complete triangle.

Hence, to find this side we use s^2 = 12^2 - 3^2

S^2 = 144 -9

S^2 = 135

S= square root of 135 = 3.root15 feet

4 0

3 years ago