# Mental Ability-Basic Algebra (NCO- Cyber Olympiad (SOF) Class 9): Questions 77 - 81 of 101

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## Question number: 77

» Mental Ability » Basic Algebra

MCQ▾

### Question

Which expression describes the area in square units of a rectangle that has a width of and a length of?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 78

» Mental Ability » Basic Algebra

MCQ▾

### Question

Which expression describes the area in square units of a rectangle that has a width of and a length of?

### Choices

Choice (4) Response

a.

b.

c.

d.

## Question number: 79

» Mental Ability » Basic Algebra

Appeared in Year: 2011

MCQ▾

### Question

Which of the following could be the graph of where ?

### Choices

Choice (4) Response

a.

b.

c.

d.

All of the above

## Question number: 80

» Mental Ability » Basic Algebra

Appeared in Year: 2011

MCQ▾

### Question

Sandy has the following scores on her science tests

If she wants to increase her current test mean by at least 1 point, what is the minimum score she must make on her next test?

### Choices

Choice (4) Response

a.

89

b.

90

c.

95

d.

92

## Question number: 81

» Mental Ability » Basic Algebra

MCQ▾

### Question

If , find the value of .

### Choices

Choice (4) Response

a.

445

b.

488

c.

250

d.

446

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