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zepelin [54]
3 years ago
9

Simplify the following expression: (Multiple Choice)

Mathematics
1 answer:
Mandarinka [93]3 years ago
4 0

Answer:

a + a - 5b - b + 2c - c

2a - 6b + c

the answer is 2

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What is the elapsed time between 8:00 a.m and noon ?
nikitadnepr [17]
4 hours because noon is 12. 8-12 is 4
7 0
1 year ago
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Which are the correct steps for solving the equation ? Select all that apply
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I would love to help, but what are the options?
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3 years ago
A gym owner has some purple weights and some white weights. The purple weights are 10 kilograms each, and the white weights are
snow_lady [41]

Answer: 3,9

Step-by-step explanation:

Given

A gym owner has purple and white weights that measure 10 kg and 6 kg each

respectively.

They weigh 84 kg in total

suppose there x purple and y white weights

\therefore x+y=12\quad \ldots(i)\\\Rightarrow 10x+6y=84\quad \ldots(ii)\\\\\text{Solving }(i)\ \text{and }(ii)\\\\

x=3,\ y=9

Thus, there are 3 purple and 9 white weights.

8 0
2 years ago
Given: Quadrilateral PQRS is a rectangle. Prove: PR = QS
lord [1]

Answer:

Given: Quadrilateral P QR S  is a rectangle.

To prove :PR= Q S

Construction : Join PR and Q S.

Proof: In Rectangle PQRS, and

→ taking two triangles PSR and Δ QRS

  1. PS = Q R

  2.  ∠ PS R  = ∠ Q RS  [Each being 90°]

  3. S R is common.

→ ΔP SR ≅  Δ Q RS → [Side-Angle-Side Congruency]

∴ PR =Q S [ corresponding part of congruent triangles ]

Hence proved.


6 0
3 years ago
Use mental math to simplify the expression. (5 + 23) + 65
ohaa [14]
1. (5+23)+65 = (5+65)+23 = 70+23 = 93 (D)
2. -(4x-7) = -4X+7 (C)
3. 2(6X+9) = 12X+18 (B)
4. 5(X-3) = 35
X-3 = 35/5
X-3 = 7
SO X= 7+3 = 10

THEN NO
9 IS NOT A SOLUTION
8 0
3 years ago
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