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DiKsa [7]
4 years ago
7

Determine whether $10.62/61lb = $7.05/4lb form a proportion. Explain.

Mathematics
1 answer:
dimaraw [331]4 years ago
5 0
$10.62 / 61lb =$7.05 / 4 lb
se invierte $7.05 y 61 lb
$10.62/ $7.05 =61lb / 4lb
simplifica
$3.54/$2.35=61/4lb
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Is (2,21) a solution for y=7x? No Yes​
Arisa [49]

Answer:

No

Step-by-step explanation:

y=7x

21=7(2)

21=14

It is not since the values are not equal.

Brainliest? :o

6 0
3 years ago
Read 2 more answers
Please show your work. I will give brainliest to the right answer!
Andre45 [30]

Answer:

y = \frac{1}{8}(x + 4)^2 + 4

Step-by-step explanation:

Given:

Focus of parabola: (-4, 6)

Directrix: y = 2

Required:

Equation for the parabola

<h2><u>SOLUTION:</u></h2>

Using the formula, y = \frac{1}{2(b - k)}(x - a)^2 + \frac{1}{2}(b + k) , the equation for the parabola can be derived.

Where,

a = -4

b = 6

k = 2

Plug these values into the equation formula

y = \frac{1}{2(6 - 2)}(x - (-4))^2 + \frac{1}{2}(6 + 2)

y = \frac{1}{2(4)}(x + 4)^2 + \frac{1}{2}(8)

y = \frac{1}{8}(x + 4)^2 + \frac{8}{2}

y = \frac{1}{8}(x + 4)^2 + 4

4 0
3 years ago
Round 668294.018492 to the nearest hundred.
NeTakaya
668294.02
this this the answer im pretty sure
7 0
3 years ago
Please help!!
JulsSmile [24]
Resolving horizontally .  Make  forces to the right positive 
resultant force =  70cos30-60cos60 = 60.62-60 = 0.62 lbs

resolve vertically  
resultant force =   120 sin60 - 70 sin30 = 103.92 - 35 = 68.92   lbs in downward direction

magnitude of the ressultant forsse = sqrt(68.92^2 + 0.62^2) =  68.92 lbs

direction of the force =  tan-1 (0.62 / 68.82) = 0.52 degrees east of south or  
a bearing of 
90 - 0.52  =  89.48 degrees

6 0
4 years ago
Evaluate tan(Sin-1(-5/13)). Answer as a fraction please.
dangina [55]

Using pythagorean identities,tan(sin^-1(-5/13))= tan(arcsin(-5/13))

Let A = arcsin(-5/13) = -arcsin(5/13)

Thus, sin A = -5/13 and cos A = sqrt(1 - (5/13)^2) = 12/13.= tan(A)= sin(A) / cos(A)= -5/13 / (12/13)= -5/12


I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

3 0
4 years ago
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