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2 years ago

Which values of x make this equation true?

Mathematics

1 answer:

Evgesh-ka [11]2 years ago

3 0

Answer:

${x}^{2} + x = 12 \\ {x}^{2} + x - 12 = 0 \\ {x }^{2} + 4x - 3x - 12 = 0 \\ x(x + 4) - 3(x + 4) = 0 \\ (x + 4)(x - 3) = 0 \\ either \: \: \: or \: \\ x = - 4 \: \: \: \: \: \: \: \: \: \: \: \: x = 3$

the answer is -4 and 3

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What words describe this shape

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Answer:

Square - its a quadrilateral with all sides congruent and four 90 degree angles

Step-by-step explanation:

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3 years ago

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Maya is a salesperson who sells computers at an electronics store. She makes a base pay amount each day and then is paid a commi

PSYCHO15rus [73]

Answer:

The y - intercept of the equation is 80 and this represents the base amount Maya makes every day.

Step-by-step explanation:

Since the function is P = 80 + 12.50x, the y-intercept is the value of the function at x = 0. So, substituting x = 0 into the function, we have

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3 years ago

The expression 16t^2 represents the distance in feet the object falls after t seconds. The object is dropped from a height of 90

Shtirlitz [24]

Answer:

824 feet

Step-by-step explanation:

Given

$h(t) = 16t^2$

$H = 906$ -- Initial Height

Required

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First, we calculate the distance covered in 2 seconds

$h(t) = 16t^2$

$h(2) = 16*2^2$

$h(2) = 16*4$

$h(2) = 64$

This means that the object moved a distance of 64feet

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3 years ago

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8. Lesly took a test with 30 questions. The ratio of correct answers to incorrect answers

Firlakuza [10]

Lesly got 14 answers correctly.

Let the correct answers be C.

Let the incorrect answers be I.

Given the following data:

Total number of questions = 30 questions.

Ratio of C to I = 7 : 8

C to I = 7 + 8 = 15

To find the number of answers she got correctly;

$C = \frac{7}{15}$ × $30$

$C = 7$ × $2$

Correct answers, C = 14 answers

Therefore, Lesly got 14 answers correctly.

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3 years ago

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