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chubhunter [2.5K]
2 years ago
5

Which expression is equivalent to OA2 42 O -7 1

Mathematics
1 answer:
Marina CMI [18]2 years ago
8 0

it is the last one before the time

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15 PTS! ILL GIVE BRAINLIEST!
CaHeK987 [17]
Your answer is c. As you multiply 1/2 by both of the factors inside the parentheses you’ll find that 1/2(b-30)=1/2b-15
3 0
3 years ago
Read 2 more answers
If x- 3/4 =2 1/9 what does the x equals?
Romashka-Z-Leto [24]
3/4+-2 1/9=your ****ing answer
4 0
3 years ago
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
Gnesinka [82]

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

Given that,

In <u>triangle TPQ, </u>

  • RS || PQ,

  • RS = 3 cm,

  • PQ = 6 cm,

  • ar(∆ TRS) = 15 sq. cm

As it is given that, <u>RS || PQ</u>

So, it means

⇛∠TRS = ∠TPQ [ Corresponding angles ]

⇛ ∠TSR = ∠TPQ [ Corresponding angles ]

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

<u>Now, We know </u>

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}

3 0
2 years ago
Help please i will give brainliest
tangare [24]

Answer:

7\geqr

Step-by-step explanation:

-1.3\geq2.9-0.6r

-2.9   -2.9

-4.2 ≥ -0.6r

/-0.6    /-0.6

7   ≥   r

8 0
3 years ago
R/5 - 6 = -1<br> r=1<br> r=5<br> r=10<br> r=25
posledela
R = 30   because r = 1,5,10,25
30/5+1=7
6+1=7
5 0
3 years ago
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