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3 years ago

A rectangle is 1.7 inches wide by 1.2 inches long. What is its perimeter?

Mathematics

2 answers:

astraxan [27]3 years ago

8 0

Answer:

5.8

Step-by-step explanation:

1.7*2= 3.4

1.2*2= 2.4

3.4+2.4= 5.8

soldier1979 [14.2K]3 years ago

6 0

A rectangle is 1.7 inches wide by 1.2 inches long. Then its perimeter is 5.8 inches

Solution:

We have been given a Rectangle whose length is L = 1.2 inches and breadth is B = 1.7 inches

The perimeter of the rectangle is given as:

$\text { Perimeter }=\mathrm{P}=2 \times(\mathrm{L}+\mathrm{B})$

Where P means the perimeter

L, B are the lengths and breadth of the rectangle respectively

By substituting the values we get,

$\begin{array}{l}{P=2 \times(1.2+1.7)} \\\\ {P=2 \times(2.9)} \\\\ {P=5.8 \text { inches }}\end{array}$

So, the Perimeter of the rectangle is 5.8 inches

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A river is flowing at the rate of 2.4 miles an hour when a boy rows across it. If the boy rows at a still-water speed of 3.1 mil

Xelga [282]

Answer:

3.9 mi/h

Step-by-step explanation:

If the boy is rowing perpendicular to the current, the two vectors form a right triangle.

AB represents the downstream current, BC is the speed across the river, and AC is the ground speed of the boat

AC^2 = 2.4^2 + 3.1^2 =5.76 + 9.61 = 15.37

AC = sqrt(15.37) = 3.9 mi/h

The boat's speed over the ground is 3.9 mi/h.

7 0

2 years ago

Write as a product of two polynomials. (x-y)^2-a(y-x)

Setler79 [48]

Answer:

$\sf{(x-y)^2-a(y-x)} \\ = \sf{({x}^{2} - 2xy + {y}^{2} ) - (ay - ax)} \\$

7 0

2 years ago

Read 2 more answers

A= h(b+c) solve for b

madreJ [45]

A=h(b+c)
A/h=b+c
b=(A/h)-c

Answer: b=(A/h)-c

7 0

2 years ago

Read 2 more answers

Look at the right-angled triangle ABC.

olga_2 [115]

Answer:

∠x = 90°

∠y = 58°

∠z = 32°

Step-by-step explanation:

he dimensions of the angles given are;

∠B = 32°

Whereby ΔABC is a right-angled triangle, and the square fits at angle A, we have;

∠A = 90°

∠B + ∠C = 90° which gives

32° + ∠C = 90°

∠C = 58°

∠x + Interior angle of the square = 180° (Sum of angles on a straight line)

∠x + 90° = 180°

∠x = 90°

∠x + ∠y + 32° = 180° (Sum of angles in a triangle)

90° + ∠y + 32° = 180°

∠y = 180 - 90° - 32° = 58°

∠y + ∠z + Interior angle of the square = 180° (Sum of angles on a straight line)

58° + ∠z +90° = 180°

∴ ∠z = 32°

∠x = 90°

∠y = 58°

∠z = 32°

8 0

2 years ago

Under the translation T(2, -3) the point (1, 6) will become (3, 9).

seraphim [82]

Answer:

False (under assumption T(2,-3) means move it right 2 units and down 3 units).

Step-by-step explanation:

The statement is false.

T(2,-3) means move the point right 2 (so plus 2 on the x-coordinate) and down 3 units (so minus 3 on the y-coordinate).

So (1,6) will become (1+2,6-3)=(3,3) after the translation.

The point (1,12) will become (1+2,12-3)=(3,9).

If the statement were "Under the translation T(2,-3) the point (1,12) will become (3,9)", then it would be true.

Or!

If the statement were "Under the translation T(2,3) the point (1,6) will become (3,9)", then it would be true.

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3 years ago