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Masteriza [31]
3 years ago
9

In a quiz, positive marks are given for correct answers and

Mathematics
2 answers:
My name is Ann [436]3 years ago
7 0

Answer:

35

Step-by-step explanation:

just trust me its the total

Mamont248 [21]3 years ago
6 0

Answer:

35

Step-by-step explanation:

25-5=20

20-10=10

10+15=25

25+10=35

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Help me on this please
Solnce55 [7]

Answer:

c

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
A quadratic function is a function of the form y=ax^2+bx+c where a, b, and c are constants. Given any 3 points in the plane, the
pochemuha

Answer:

The quadratic function whose graph contains these points is y=-x^{2}-2x-2

Step-by-step explanation:

We know that a quadratic function is a function of the form y=ax^{2}+bx+c. The first step is use the 3 points given to write 3 equations to find the values of the constants <em>a</em>,<em>b</em>, and <em>c</em>.  

Substitute the points (0,-2), (-5,-17), and (3,-17) into the general form of a quadratic function.

-2=a*0^{2}+b*0+c\\c=-2

-17=a*-5^{2}+b*-5+c\\c=-25a+5b-17

-17=a*3^{2}+b*3+c\\ c=-9a-3b-17

We can solve these system of equations by substitution

  • Substitute c=-9a-3b-17

-9a-3b-17=25a+5b-17\\-9a-3b-17=-2

  • Isolate a for the first equation

-9a-3b-17=-25a+5b-17\\a=\frac{b}{2}

  • Substitute a=\frac{b}{2} into the second equation

-9\left(-\frac{b}{2}\right)-3b-17=-2

  • Find the value of b

-9\left(-\frac{4b}{17}\right)-3b-17=-2\\ b=-2

  • Find the value of a

a=\frac{b}{2}\\  a=-1

The solutions to the system of equations are:

b=-2,a=-1,c=-2

So the quadratic function whose graph contains these points is

y=-x^{2}-2x-2

As you can corroborate with the graph of this function.

8 0
3 years ago
A farmer is building a fence to enclose a rectangular area against an existing wall, shown in the figure below.
mr Goodwill [35]

9514 1404 393

Answer:

  3362 ft²

Step-by-step explanation:

As we saw in brainly.com/question/22284853, the long side of the area will be half the length of the fence: 82 feet. The remaining two sides will be 41 feet each, so the largest area that can be enclosed is ...

  A = LW

  A = (82 ft)(41 ft) = 3362 ft²

7 0
3 years ago
Plzz help............​
Vitek1552 [10]

Answer:

14. (8,9,10)

15.no(A)

this is the answer

5 0
3 years ago
1. A third-grade class needs five leaves each day to feed its two caterpillars. How many leaves would they need each day to feed
Kay [80]

Answer:

17 leaves

Step-by-step explanation:

A

5 0
3 years ago
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