All categories

3 years ago

The table of values models the quadratic function y = x2 + 7x – 9. What are the missing y-values in the table for the x-values?

Mathematics

2 answers:

erastovalidia [21]3 years ago

5 0

Answer:

Step-by-step explanation:

-19, -15, -9, -1, 9

sleet_krkn [62]3 years ago

3 0

The answer is letter B.

y = x² +7x-9

y= (-2)²+7(-2)-9

y=4+-14-9

y=-19

y=(-1)²+7(-1)-9

y=1+-7-9

y=-6+-9

y= -15

y=(0)²+7(0)-9

y=0+0-9

y=-9

y=(1)²+7(1)-9

y=1+7-9

y=8-9

y= -1

y=(2)²+7(2)-9

y=4+14-9

y=18-9

y=9

You might be interested in

The formula T= 2pi sqrt(L/32) relates the time, T, in seconds for a pendulum with the length, L, in feet, to make one full swing

tester [92]

The length of pendulum is 2.485 feet

<h3>Solution:</h3>

Given that,

The formula T= 2pi sqrt(L/32) relates the time, T, in seconds for a pendulum with the length, L, in feet, to make one full swing back and forth

Therefore, the given formula is:

$T=2\pi \sqrt{\frac{L}{32} }$

We have to find the length of pendulum that makes one full swing in 1.75 seconds

So the modify the given equation to find "L"

$T=2\pi \sqrt{\frac{L}{32} }\\\\ \sqrt{\frac{L}{32} }=\frac{T}{2 \pi}\\\\\text{Taking square root on both sides }\\\\\frac{L}{32} = \frac{T^2}{4 \pi^2}\\\\L = \frac{T^2}{4 \pi^2} \times 32\\\\L = \frac{T^2}{\pi^2 } \times 8$

Substitute T = 1.75 seconds and $\pi = 3.14$

$L = \frac{1.75^2}{3.14 \times 3.14} \times 8\\\\L = \frac{3.0625}{9.8596} \times 8\\\\L = 2.485$

Thus length of pendulum is 2.485 feet approximately

7 0

4 years ago

Tabitha used 7 2/3 liters of water to completely fill 3 water bottles. If the water bottles are all the same size, how man liter

vlabodo [156]

23/9 would be your answer

5 0

4 years ago

Given that

lbvjy [14]

Answer:

$x=3\sqrt{2}$

Step-by-step explanation:

In a right triangle, the "hypotenuse" is the side opposite of the 90 degree angle. That side is "a"

Using pythagorean theorem, we can write:

Leg^2 + Leg^2 = Hypotenuse^2

Note: legs are the other 2 sides, x and x respectively

Now we can write:

$x^2 + x^2 = a^2$

a is 6 meters, so replacing a with 6 and solving we get:

$x^2 + x^2 = a^2\\2x^2=6^2\\2x^2=36\\x^2=18\\x=\sqrt{18}$

To simplify the surd, we can use the property shown below:

$\sqrt{x*y}=\sqrt{x} \sqrt{y}$

Also

$\sqrt{x} \sqrt{x} =x$

Now simplifying:

$x=\sqrt{18} \\x=\sqrt{9*2}\\ x=\sqrt{9} \sqrt{2} \\x=3\sqrt{2}$

4 0

3 years ago

Can anyone help me with this I need a answer for this before 11:30am?

algol [13]

Hello from MrBillDoesMath!

Answer:

x = 2

Discussion:

See attachment for full detail.

Thank you,

MrB

5 0

4 years ago

If a tessellation is regular, how many sides can the tessellating regular polygon have?

inn [45]

For the answer to the question above, I think that only the regular polygons that tessellate are equilateral triangles, squares, and regular hexagons.
I hope my answer helped you. Have a nice day!

4 0

4 years ago

Read 2 more answers