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vampirchik [111]
3 years ago
7

The equation y = 15x + 10 gives your score on a math quiz, where x is the number of questions you answered correctly. What is yo

ur score if you answered 5 questions correctly?
Mathematics
2 answers:
den301095 [7]3 years ago
4 0

Answer: Your score will be 85.

Step-by-step explanation:

Given : The equation y = 15x + 10 gives your score on a math quiz, where x is the number of questions you answered correctly.

Substitute x= 5  in the above equation, we get

y = 15(5) + 10=75+10=85

Hence, if you answered 5 question correctly , your score will be 85.

otez555 [7]3 years ago
3 0

substitute in for x

y = 15(5) + 10

y = 75 + 10

y = 85

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Factor 8X squared + 10x + 2​
mojhsa [17]

Answer:

2(4x + 1)(x + 1)

Step-by-step explanation:

Given

8x² + 10x + 2 ← factor out 2 from each term

= 2(4x² + 5x + 1)

To factor the quadratic

Consider the factors of the product of the coefficient of the x² term and the constant term which sum to give the coefficient of the x- term

product = 4 × 1 = 4 and sum = + 5

The factors are + 1 and + 4

Use these factors to split the x - term

4x² + x + 4x + 1 ( factor the first/second and third/fourth terms )

= x(4x + 1) + 1 (4x + 1) ← factor out (4x + 1)

= (4x + 1)(x + 1), thus

4x² + 5x + 1 = (4x + 1)(x + 1) and

8x² + 10x + 2 = 2(4x + 1)(x + 1) ← in factored form

3 0
3 years ago
-3x + 5y = 13<br> X + 4y = -10
Alex17521 [72]
X= -6
Y=-1
The x value is minus 6 and the y value is equal to minus 1
6 0
3 years ago
<img src="https://tex.z-dn.net/?f=if%20x%20%3D%20-5%5C%5Cx%5E%7B2%7D%20%2B%203%5C%5Cx%20-%202" id="TexFormula1" title="if x = -5
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Answer:

this question is inappropriate

8 0
3 years ago
Steve makes the tree diagram shown below to find the possible outcomes of tossing a penny, a nickel, and a dime. What is the pro
kirza4 [7]
The answer is B) 1/4.

There are 2 outcomes in his tree that have all coins with the same side up:  HHH and TTT.  There are 8 total outcomes.  This makes the probability 2/8 = 1/4.
3 0
3 years ago
What is the y-intercept, axis of symmetry and vertex of the following function.
Pepsi [2]

Complete the square:

F(x) = -3x² - 6x - 5

F(x) = -3 (x² + 2x) - 5

F(x) = -3 (x² + 2x + 1 - 1) - 5

F(x) = -3 ((x + 1)² - 1) - 5

F(x) = -3 (x + 1)² + 3 - 5

F(x) = -3 (x + 1)² - 2

The y-intercept has x-coordinate equal to 0, so it corresponds to the value of F(0) :

F(0) = -3 (0 + 1)² - 2 = -3 - 2 = -5

The axis of symmetry is the vertical line running through the vertex of this parabola, so we'll come back to this.

The vertex of the parabola is (-1, -2). This represents the maximum value of F(x), which follows from

(x + 1)² ≥ 0   ⇒   -3 (x + 1)² ≤ 0   ⇒   -3 (x + 1)² - 2 ≤ -2

This is to say, every point on the parabola has a y-coordinate no greater than -2.

As mentioned earlier, the axis of symmetry is the vertical line through the vertex, and its equation is determined by the x-coordinate of the vertex. Hence the AoS is the line x = -1.

4 0
2 years ago
Read 2 more answers
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