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3 years ago

The prodoct of 4 and number plus 17 is 5

Mathematics

2 answers:

charle [14.2K]3 years ago

4 0

Answer:

Let the unknown number be x,

4x + 17 = 5

=> 4x = 5 - 17

=> 4x = -12

=> x = -12 / 4

=> x = -3

To cross check,

4 * (-3) + 17 = 5

-12 + 17 = 5

5 = 5

If my answer helped, kindly mark me as the brainliest!!

Thank You!!

vichka [17]3 years ago

3 0

Answer:

-3

Step-by-step explanation:

The product (the result of a multiplication) of 4 and a number. Let x be the unknown number:

4 · x = 4x

Plus 17:

4x + 17

Is 5:

4x + 17 = 5

Solve:

4x = 5 - 17

4x = -12

x = -12 ÷ 4

x = -3

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Read 2 more answers

12. In the given figure, RS is parallel to PQ, If RS = 3 cm, PQ = 6 cm and ar(∆TRS) = 15cm³, then ar (∆TPQ) = ? (a) 70 cm² (b) 5

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$\large\underline{\sf{Solution-}}$

Given that,

In triangle TPQ, 

RS || PQ,

RS = 3 cm,

PQ = 6 cm,

ar(∆ TRS) = 15 sq. cm

As it is given that, RS || PQ

So, it means

⇛∠TRS = ∠TPQ [ Corresponding angles ]

⇛ ∠TSR = ∠TPQ [ Corresponding angles ]

$\rm\implies \: \triangle TPQ \: \sim \: \triangle TRS \: \: \: \: \: \: \{AA \}$

Now, We know 

Area Ratio Theorem,

This theorem states that :- The ratio of the area of two similar triangles is equal to the ratio of the squares of corresponding sides.

$\rm\implies \:\dfrac{ar( \triangle \: TPQ)}{ar( \triangle \: TRS)} = \dfrac{ {PQ}^{2} }{ {RS}^{2} }$

$\rm\implies \:\dfrac{ar( \triangle \: TPQ)}{15} = \dfrac{ {6}^{2} }{ {3}^{2} }$

$\rm\implies \:\dfrac{ar( \triangle \: TPQ)}{15} = \dfrac{36 }{9}$

$\rm\implies \:\dfrac{ar( \triangle \: TPQ)}{15} = 4$

$\rm\implies \:ar( \triangle \: TPQ) = 60 \: {cm}^{2}$

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