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3 years ago

Milly wrote the quadratic equation 0 = –x2 + 4x – 7 in standard form. What is the value of c in her equation?

Mathematics

1 answer:

zysi [14]3 years ago

6 0

Answer:

c = - 7

Step-by-step explanation:

the standard form of a quadratic equation is

ax² + bx + c = 0 : a ≠ 0

x² + 4x - 7 = 0 is in standard form

By comparison of the coefficients of the terms, c = - 7

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Subtracting a number is the same as adding its opposite.

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Answer:

in first question, answer is 12

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3 years ago

There are 100 teachers in a school. 60 teach science, 25 teach humanities, 15 teach both science and humanities. Find the number

UkoKoshka [18]

Answer:

Step-by-step explanation:

The total number of teachers in the school is 100.

The number who teach Science is 60

The who teach humanities is 25.

The number that teach both humanities and Science is 15.

We want to find the number who teach Science but not Humanities.

We obtain this by subtracting the number of teachers who teach both subjects from the number that teach Science.

$= 60 - 15 = 45$

Therefore 25 teaches science but not Humanities

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3 years ago

What’s 5(x-4)+2 as a verbal expression?

sesenic [268]

The verbal expression for the mathematical expression 5(x - 4) + 2 is the number 5 times the difference between an unknown x and the number 4 and plus 2.

<h3>What is an expression?</h3>

It is defined as the combination of constants and variables with mathematical operators.

It is given that a mathematical expression as below:

= 5(x - 4) + 2

Here x is the unknown number

The number

Number 5 times the difference between an unknown x and number 4 and plus 2

Thus, the verbal expression for the mathematical expression 5(x - 4) + 2 is number 5 times the difference between an unknown x and number 4 and plus 2.

Learn more about the expression here:

brainly.com/question/14083225

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1 year ago

Which of the sentence is true?

algol13

Answer:

The graph of the circle is not a function

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2 years ago

Annie is framing a photo with a length of 6 inches and a width of 4 inches. The distance from the edge of the photo to the edge