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Viefleur [7K]
3 years ago
6

HELP PLEASE! Thank youuuuu

Mathematics
1 answer:
Nitella [24]3 years ago
6 0

Answer:

A

Step-by-step explanation:

note that the exact value of

sin ( \frac{\pi }{4} ) = \frac{1}{\sqrt{2} } = \frac{\sqrt{2} }{2} ← the value of the x- coordinate

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Plsplspls help!!!
RideAnS [48]

Answer:

a) the answer if the substitute is 300

7 0
3 years ago
Name the points that are a distance of 5 units from d
cupoosta [38]
WE NEED THE FREAKIN' POINTS
4 0
3 years ago
Complete the square than convert to vertex form. y=2x^2+8x-9​
8_murik_8 [283]

y=2x^2+8x-9\\D=b^2-4ac\\D=64-4(2)(-9)\\D=64+72 > 0

There are 2 roots so the only way to complete the square is,

y=2x^2+8x-9\\y=2[(x^2+4x)]-9\\y=2[(x^2+4x+4)-4]-9\\y=2[(x+2)^2-4]-9\\y=2(x+2)^2-8-9\\y=2(x+2)^2-17

Just factor 2 out of 2x^2+8x (just ignore the -9) then find the number that will make the terms be able to complete the square.

then complete the square and multiply 2 inside the brackets.

subtraction as you already get the vertex form and know how to complete the square.

Vertex Form: y=2(x+2)^2-17

3 0
3 years ago
(29) A runner is running 10 miles per hour.
leva [86]

The conversions factors needed are 1 mile= 5280 feet and 1 hour = 3600 seconds, speed in ft/s = 14.67 ft/s  

<u>Solution: </u>

Given, A runner is running 10 miles per hour.  

We have to find what conversion factors should be used to convert 10 mi/hr to ft/s?

Now, speed of runner = 10 miles per hour.

But we need the units to be in ft / s.

Then, conversion factors are miles to feet and hours to seconds.

Now, miles to feet ⇒ 1 mile = 5280 feet.

Now, hours to seconds ⇒ 1 hour = 3600 seconds

\begin{array}{l}{\text { So,speed }=10 \frac{\text { miles }}{\text { hour }}} \\\\ {\text { speed }=10 \times \frac{1 \text { miles }}{1 \text { hour }}} \\\\ {\text { Speed }=10 \times \frac{5280 \text { feet }}{3600 \text { seconds }}} \\\\ {\text { Speed }=\frac{52800}{3600}=14.67 \mathrm{ft} / \mathrm{s}}\end{array}

Hence, the conversions needed are 1 mile = 5280 feet and 1 hour = 3600 seconds, speed in ft/s = 14.67 ft/s

6 0
3 years ago
Claire is making picnic lunches. She has 12 sandwiches, 18 apples, and 30 pieces of candy. What is the greatest number of lunche
irina [24]

Answer:12 lunches

Step-by-step explanation:

If she only has 12 sandwiches and she wants to use the same amount of each item to make the most lunches... I believe it would be 12.

8 0
3 years ago
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