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3 years ago

Solve the second equation.

Mathematics

1 answer:

Aneli [31]3 years ago

4 0

Step-by-step explanation:

2x - y = 5

-y = 5 - 2x

.........

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17. Complete the triangles so that the number in the centre is the sum of the numbers on the

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Answer:

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Step-by-step explanation:

sorry i dont know

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2 years ago

SOMEONE PLEASE ANSWER CORRECTLY

Vinvika [58]

Answer:

If you choose a class at random, what are the chances that Gordon went to the track on Tuesday?

Step-by-step explanation:

Assign one day to each color

Regardless of what the score on tye dice is, the colour represents the day

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4 years ago

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A bag contains 7 red marbles, 8 blue marbles and 4 green marbles. If three marbles

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Answer:

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3 years ago

Lamar goes shopping for a new flat-panel television. A television is usually described by the length of the screen's diagonal. H

sp2606 [1]

Answer:

The width is 36.4 inches

Step-by-step explanation:

we know that

Applying teh Pythagorean Theorem

$D^2=h^2+W^2$

where

D is the length of the diagonal of the television

W is the width

h is the height

substitute the given values

$42^2=21^2+W^2$

solve for W

$W^2=42^2-21^2\\W^2=1,323\\W=36.4\ in$

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3 years ago

Please help me i will give brainlest please i need help

sweet-ann [11.9K]

Answer:

Since you didn't mention which question.

Step-by-step explanation:

13.

$1.\overline{52}\\$ = 1.525252...

Let x = 1.525252...

10x = 15.2525252....

100x = 152.525252...

100x - x = 151.00

99x = 151

$x = \frac{151}{99}\\\\or\\\\x = 1 \frac{52}{99}$

14.

4x + 10 = 8x - 26 [ corresponding angles are congruent ]

4x - 8x = - 26 - 10

- 4x = - 36

$x = \frac{-36}{-4} \\\\x = 9$

15.

Given breadth of a rectangle is ( 2/3) its length.

Let the length be x

Therefore, breadth = ( 2 /3) of x

$= \frac{2}{3} \times x\\\\=\frac{2}{3}x$

Given perimeter = 40m

Perimeter of a rectangle = 2( length + breadth)

$40 = 2 (x + \frac{2}{3}x )\\\\\frac{40}{2} = \frac{2}{2}(x + \frac{2}{3}x)\\\\20 = x + \frac{2}{3}x\\\\20 = \frac{3x + 2x}{3}\\\\20 \times 3 = 5x \\\\x = \frac{60}{5}\\\\x = 12\\\\Therefore, Length = x = 12 \ m \ and \ breadth = \frac{2}{3}x = \frac{2}{3} \times 12 = 8 \ m$

16.

Sum of the angles of a triangle = 180°

Given ratio = 2 : 3 : 4

Sum of the ratio = 9

Therefore,

$first \ angle = \frac{2}{9} \times 180 = 2 \times 20 = 40 ^\circ\\\\Second \ angle = \frac{3}{9} \times 180 = 3 \times 20 = 60^\circ\\\\Third angle = \frac{4}{9} \times 180 = 4 \times 20 = 80^\circ$

17.

Sum of interior angles of a polygon with n sides = ( n - 2) x 180°

Given polygon is pentagon, that is n = 5

Therefore, sum of the interior angles = ( 5 - 2) x 180 = 3 x 180 = 540°

That is ,

x + 125 + 125 + 88 + 60 = 540°

x + 398 = 540°

x = 540 - 398

x = 142°

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3 years ago

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