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3 years ago

Find the y-intercept and the axis of symmetry of f(x)=ax^2+2ax+3.

Mathematics

1 answer:

Setler [38]3 years ago

7 0

Answer:

y-intercept = (0,3)

Axis of symetry is -1

Step-by-step explanation:

ax^2+2ax+3 <-- y-intercept

Axis of symetry is -b/2a

-2a/2a=-1

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Andrew invited 30 friends to his birthday party. Seventy percent of his friends came to the party. The other 30% did not come to

solong [7]

Answer:

70% = 7/10

Step-by-step explanation:

The fraction is given in the problem statement as 70%. It can be expressed as 7/10, 0.7, 0.70, and many other ways. Take your pick.

3 0

3 years ago

What's 5y^-1+7x^2+8y^2 ? help plz id appreciate it .

luda_lava [24]

Answer:

The answer is zero

Step-by-step explanation:

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3 years ago

Find the surface area of this rectangular prism.

Alexeev081 [22]

Answer:

Surface area of the rectangular prism= $168 yards^2$

Step-by-step explanation:

Given Dimensions of the rectangular prism are:

$Length(L)= 9 yards\\\\Width(w)=2 yards \\\\Height(H)= 6 yards$

Surface Area of a rectangular prism=

$2(L*W+W*H+H*L)\\\\ =2(9*2+2*6+6*9)\\\\ =2(18+12+54)\\\\ = 2(84)\\\\$

= $168 yards^2$

The surface area of the rectangular prism is $168 yards^2$

5 0

3 years ago

Find the decimal equivalent to 4/15

alexandr1967 [171]

Answer:

$.2666$ (repeating, which is usually signified by a line over the 6, but I couldn't type that)

Step-by-step explanation:

________

15 | 4

__._____

15 | 4 0 since 15 is bigger than 4, add a 0 here.

make sure you also place a decimal point

above (above the place directly after 4) so your

answer isn't larger than it should be.

__.2____

15 | 4 0

3 0 15*2 = 30. that's as close to 40 as we're going to get.

__.2____

15 | 4 0

10 40 - 30 = 10.

__.2____

15 | 4 0

1 0 0 bring down an imaginary 0.

__.26___

15 | 4 0

1 0 0

<u> - 90 </u> 15*6 = 90. that's as close to 100 as we're going to get.

1 0

Notice that we keep getting 10 as a remainder again if we keep going. So 6 keeps repeating on top, which is why it's a repeating decimal. Once you realize it's the same number again and again the further you divide it, you can stop and write the line over the 6.

6 0

3 years ago

What is 5 pi over 3 radians in degrees? <br><br> 60° <br><br> 120° <br><br> 210° <br><br> 300°

Wittaler [7]

<h3>( 5π/3 ) radians = 300°</h3>

<h3>Further explanation</h3>

Firstly , let us learn about trigonometry in mathematics.

Suppose the ΔABC is a right triangle and ∠A is 90°.

<h3>sin ∠A = opposite / hypotenuse</h3><h3>cos ∠A = adjacent / hypotenuse</h3><h3>tan ∠A = opposite / adjacent </h3>

There are several trigonometric identities that need to be recalled, i.e.

$cosec ~ A = \frac{1}{sin ~ A}$