All categories

3 years ago

Hi. I need help with these questions. See image for question. Answer 15

Mathematics

2 answers:

UNO [17]3 years ago

8 0

Answer:

x = 1/5

Step-by-step explanation:

<h3>Given</h3>

Parabola y = 5x² -2x + 3

The equation of the line of symmetry

<h3>Solution</h3>

The line of symmetry passes through the vertex of the parabola

<u>The vertex is determined by the formula: </u>

x = -b/2a
Where b and a are constants from the standard form of ax² + bx + c = 0

<u>Substituting values from the given equation:</u>

x = -(-2)/2(5) = 1/5
x = 1/5 is the line of symmetry

Sauron [17]3 years ago

4 0

Step-by-step explanation:

YOU JUST FOLLOW THE STEP

You might be interested in

2x+ 3 / 5= y<br> rearrange to make x the subject

Elza [17]

Answer:

Step-by-step explanation:

Given the equation 2x+ 3 / 5= y

Cross multiply

2x+3 = 5 * y

2x+3 = 5y

Subtract 3 from both sides

2x+3-3 = 5y - 3

2x = 5y-3

Divide both sides by 2

2x/2 = (5y-3)/2

x = (5y-3)/2

Hence the value of x is (5y-3)/2

4 0

3 years ago

Can you help me with the bottom three please?

nika2105 [10]

Answer:

6= 66.67%

7=25%

8=70%

6 0

3 years ago

What is the volume of the sphere shown below with a radius of 9

Sati [7]

Answer:

972π or 3052.08 if π=3.14(remember to label the answer with your units)

Step-by-step explanation:

The formula for the volume of a sphere is $\frac{4}{3}\\$ π $r^{3}$ . So, just plug the radius into the formula. $r^{3}$ <em> </em>in this case is $9^{3}$ which is 729. For, $\frac{4}{3}$ ×729, the 3 and 729 cancel out to create 4×243 which is 972. Just add π to this and you get 972π. If π is 3.14 just multiple 972 and 3.14 to get 3052.08.