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3 years ago

If 2x + 5 = 1 then x =1. -22. -1.53. 04. 25. none of these

Mathematics

1 answer:

Solnce55 [7]3 years ago

4 0

Answer:

1. x = -2

Step-by-step explanation:

2x + 5 = 1

2x + 5 - 5 = 1 - 5

2x = -4

2x/2 = -4/2

x = -2

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The perimeter of a rectangle is 72 cm. The length is 3 more than twice the width What

solmaris [256]

<h3>Solution</h3>

Given :-

Perimeter of rectangle = 72 cm
The length is 3 more than twice the width.

Find :-

Dimensions of rectangle

<h3 /><h3>Explantion</h3>

Using Formula

$\boxed{\underline{\tt{\red{\:(perimeter_{rectang}\:=\:2\times (Length+Width)}}}}$

Let,

Length of Rectangle = x cm
Breadth of Rectangle = y cm

According to question,

==> perimeter of Rectangle = 72

==> 2(x+y) = 72

==> x + y = 72/2

==> x + y = 36_________________(1)

Again,

==> x = 2y + 3

==> x - 2y = 3__________________(2)

Subtract equ(1) & equ(2)

==> y + 2y = 36 - 3

==> 3y = 33

==> y = 33/3

==> y = 11

keep in equ(1)

==> x - 2×11 = 3

==> x = 3 + 22

==> x = 25

<h3>Hence</h3>

Length of Rectangle = 25 cm
Width of Rectangle = 11 cm

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3 years ago

Noelia has 144 role-playing cards. She and

scZoUnD [109]

Noelia has 216 cards after buying part of the set with her friends.

<h3>What is addition?</h3>

Combining items and counting them as a single, large group is done through addition.

Given that, Noelia has 144 role-playing cards.

Now, she bought 72 cards more, therefore, the number of cards Noelia has is:

144 + 72

= 216

Hence, Noelia has 216 cards after buying part of the set with her friends.

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Step-by-step explanation:

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3 years ago

If 2x + 5 = 1 then x =1. -22. -1.53. 04. 25. none of these​

If 2x + 5 = 1 then x =1. -22. -1.53. 04. 25. none of these