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Sholpan [36]
3 years ago
15

What is 3+9= free brainliest

Mathematics
2 answers:
kvv77 [185]3 years ago
7 0

Answer:

12

Step-by-step explanation:

dimulka [17.4K]3 years ago
5 0

Answer:

12

Step-by-step explanation:

I counted with my fingers

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How to divide mixed numbers using reciprocal
Semenov [28]

You have to make the mixed number into a fraction in order to  divide

6 0
2 years ago
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The quadratic regression graphed on the coordinate grid represents the height of a road surface x meters from the center of the
andrew-mc [135]

The height of the surface increases, then decreases, from the center out to the sides of the road.

<h3>What is quadratic equation?</h3>

The polynomial having a degree of 2 is defined as the quadratic equation it means that the variable will have a maximum power of 2.

Let

y------> the height of the surface

x------> the road

we know that

The quadratic regression graphed represent a vertical parabola open downward

The function increase in the interval --------> (-5,0)        

The function decrease in the interval -------->   (0,5)

therefore

The height of the surface increases, then decreases, from the center out to the sides of the road.

To know more about quadratic equation follow

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5 0
2 years ago
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How many of the first 1000 positive integers are multiples of both 4 and 5 but not 6 ?
castortr0y [4]
Let's begin by breaking  each number down into its prime factors:    4 = 2 x 2    5 = 5    6 = 2 x 3 Next, let's determine the Lowest Common Multiple (LCM) of the numbers 4, 5, and 6 by multiplying all common and unique prime factors of each number:    common prime factors: 2    unique prime factors:  2,5,3    LCM = 2 x 2 x 5 x 3 = 60 Next, let's determine how many times 60 goes into 10,000 (excluding remainder):    10,000/60 = 166 and 2/3    Multiples of ALL 3 numbers (4,5,6) = 166  Next, let's determine the Lowest Common Multiple (LCM) of the numbers 4 and 5 by multiplying all common and unique prime factors of each number:    common prime factors:  none
    unique prime factors:  2 x 2 x 5
    LCM = 2 x 2 x 5 = 20 Next, let's determine how many times 20 goes into 10,000:
    10,000/20 = 500
    Multiples of BOTH numbers (4 and 5) = 500 Finally, let's subtract the multiples of ALL three numbers (4,5,6) from the multiples of BOTH numbers (4 and 5) to get our answer:   Multiples of ONLY numbers 4 and 5 (excluding 6):       500 - 166 = <span>334</span>
5 0
2 years ago
What is the surface area of this square pyramid?
Viefleur [7K]

base = 3*3 = 9 sq. in.

 side = 1/2 *3*6 = 9 sq. in.

4 sides x 9 = 36 + 9 (base) = 45 in^2

 Answer is A

3 0
3 years ago
Need help with this
olganol [36]
Put a small dot on positive 4 and go down to -3 and out a big dot there and that’s your first coordinate
3 0
3 years ago
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