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3 years ago

Sandra tiles 5/4 square yards in 1/3 hour

Mathematics

1 answer:

jolli1 [7]3 years ago

6 0

Sandra lays 3.75 tiles in one hour

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Evaluate the line integral, where C is the given curve. (x + 4y) dx + x2 dy, C C consists of line segments from (0, 0) to (4, 1)

zubka84 [21]

Parameterize the line segments (call them $C_1$ and $C_2$ , respectively, by

$\vec r_1(t)=(1-t)(0,0)+t(4,1)=(4t,t)$

$\vec r_2(t)=(1-t)(4,1)+t(5,0)=(4+t,1-t)$

both with $0\le t\le1$ . Then

$\displaystyle\int_C(x+4y)\,\mathrm dx+x^2\,\mathrm dy$

$=\displaystyle\int_0^1\bigg((4t+4t)(4)+(4t)^2(1)\bigg)\,\mathrm dt+\int_0^1\bigg((4+t+4(1-t))(1)+(4+t)^2(-1)\bigg)\,\mathrm dt$

$=\displaystyle\int_0^115t^2+21t-8\,\mathrm dt=\boxed{\frac{15}2}$

6 0

3 years ago

Given m||n, find the value of x.

loris [4]

Answer:

x = 15

Step-by-step explanation:

The two angles add to a straight line, so they add to 180

6x-5 + 6x+5 = 180

Combine like terms

12x = 180

Divide by 12

12x/12 =180/12

x =15

7 0

2 years ago

Read 2 more answers

Let f: 4 → and c(t): → 4. suppose ∇f(1, 1, π, e6) = (0, 1, 2, −4), c(π) = (1, 1, π, e6), and c'(π) = (13, 12, 0, 1). find d(f ∘

Tems11 [23]

3tt hope it helps just starting out

6 0

3 years ago

Are triangles PRU and STQ congruent? Question 2 options:

denis23 [38]

PRU and STQ are not congruent because they aren’t the same size.

No, because they aren’t the same size.

Step-by-step explanation:

Both PRU and STQ triangles aren't in the same size, So it is not congruent. Triangles are congruent if two pairs of corresponding angles and a couple of inverse sides are equivalent in the two triangles.

If there are two sets of corresponding angles and a couple of comparing inverse sides that are not equal in measure, at that point the triangles are not congruent.

3 0

3 years ago

Helppppppppppppppppppppppppppppppppppppppppp

mojhsa [17]

Answer:

$55.93 or rounded up is $56

Division

First, we would divide 15.98 by 2 to see how many dollars would a bag cost.

15.98 divided by 2 = $7.99

Multiplication

Then, we would multiply by 7 to see how may dollars would it cost for 7 kg bag

7.99 times 7 = 55.93

Round-up

If we round it up, we get $56.

Request

Please give me brainliest :)

6 0

2 years ago

Read 2 more answers