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2 years ago

Can someone please help me with this?

Mathematics

1 answer:

ddd [48]2 years ago

3 0

Answer:

Step-by-step explanation:

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Asdhfj,..kjdsaDzfxhj,jhsaZ

RSB [31]

Answer:

ku hgkjfghdehfv bfd

Step-by-step explanation:

7 0

2 years ago

A boundary stripe 6 in. wide is painted around a rectangle whose dimensions are 120 ft by 230 ft. Use differentials to approxima

Nimfa-mama [501]

Answer:

350 square feet

Step-by-step explanation:

We are given that

Width of strip=6 in

Dimension of rectangle= $20 ft\times 230 ft$

We know that

Area of rectangle ,A=xy

Differentiate

$dA=\frac{\partial A}{\partial x}x+\frac{\partial A}{\partial y}y$

We have $\frac{\partial A}{\partial x}=y=230 ft$

$\frac{\partial A}{\partial y}=x=120$

$dx=\frac{12}{12}=1 ft$

1 ft=12 in

Because 6 in added in both side of breadth

dy= $\frac{12}{12}=1 ft$

Because 6 in added on both sides of length of rectangle

Substitute the values

$dA=230\times 1+120\times 1=350 ft^2$

Hence, the number of square feet of paint in the strip=350 square feet

7 0

3 years ago

The lengths of the two sides of a triangle (not necessarily a right triangle) are 1.00 meters and 3.46 meters. The sine of the a

Hoochie [10]

Answer:

0.1228

Step-by-step explanation:

We use sine rule

$\dfrac{a}{\sin A} = \dfrac{b}{\sin B} = \dfrac{c}{\sin C}$

where, in any triangle ABC, a is the side opposite ∠A, b is the side opposite ∠B and c is the side opposite ∠C.

Applying this to the question,

$\dfrac{1.00}{0.0355} = \dfrac{3.46}{\sin B}$

$\sin B = 3.46\times0.0355 = 0.12283 \approx 0.1228$

7 0

2 years ago

Solve using substitution. y = –9x − 1 y = –4x − 6 ( __ , __ )

Alenkasestr [34]

Answer:

x=-y-1/9

y=9x-1

x=-y/4-3/2

y=-4x-6

4 0

2 years ago

X-1 / x-1 = 1 What is x?

lions [1.4K]

Answer:

$\large\boxed{x\in\mathbb{R}-\{1\}}\to\text{any real number except 1}$

Step-by-step explanation:

$\dfrac{x-1}{x-1}=1\\\\\text{Domain:}\ x-1\neq0\qquad\text{add 1 to both sides}\\\\x\neq1\\\\\text{We know:}\ \dfrac{a}{a}=1\ \text{for any real number except 0}.\\\\\text{Therefore}\ x\ \text{is any real number except 1}.$

4 0

2 years ago