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timama [110]
2 years ago
9

Help pleaseeeeee am kinda stuck ​

Mathematics
1 answer:
aleksley [76]2 years ago
7 0

Answer:

{ \tt{- \frac{3}{6} \:  \:  \:  \frac{9}{15}   \:  \:  \frac{10}{25}  \:  \:  \frac{24}{30} \:  \: 7 }} \\

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Find the perimeter of square with an area of 702.25 square yards.
Masteriza [31]

Answer: 106 yards

Step-by-step explanation: Find the square root of 702.25 which is 26.5, then times 26.5 by 4 to find the perimeter. 106 yards.

6 0
3 years ago
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(xsinA-ucosA)^2+(xcosA+ysinA)^2=x^2+y^2​
Artist 52 [7]

Answer:

u = x tan(A) - sec(A) sqrt(x^2 + y^2 - (x cos(A) + y sin(A))^2) or u = sec(A) sqrt(x^2 + y^2 - (x cos(A) + y sin(A))^2) + x tan(A)

Step-by-step explanation:

Solve for u:

(x sin(A) - u cos(A))^2 + (x cos(A) + y sin(A))^2 = x^2 + y^2

Subtract (x cos(A) + y sin(A))^2 from both sides:

(x sin(A) - u cos(A))^2 = x^2 + y^2 - (x cos(A) + y sin(A))^2

Take the square root of both sides:

x sin(A) - u cos(A) = sqrt(x^2 + y^2 - (x cos(A) + y sin(A))^2) or x sin(A) - u cos(A) = -sqrt(x^2 + y^2 - (x cos(A) + y sin(A))^2)

Subtract x sin(A) from both sides:

-u cos(A) = sqrt(x^2 + y^2 - (x cos(A) + y sin(A))^2) - x sin(A) or x sin(A) - u cos(A) = -sqrt(x^2 + y^2 - (x cos(A) + y sin(A))^2)

Divide both sides by -cos(A):

u = x tan(A) - sec(A) sqrt(x^2 + y^2 - (x cos(A) + y sin(A))^2) or x sin(A) - u cos(A) = -sqrt(x^2 + y^2 - (x cos(A) + y sin(A))^2)

Subtract x sin(A) from both sides:

u = x tan(A) - sec(A) sqrt(x^2 + y^2 - (x cos(A) + y sin(A))^2) or -u cos(A) = -x sin(A) - sqrt(x^2 + y^2 - (x cos(A) + y sin(A))^2)

Divide both sides by -cos(A):

Answer:  u = x tan(A) - sec(A) sqrt(x^2 + y^2 - (x cos(A) + y sin(A))^2) or u = sec(A) sqrt(x^2 + y^2 - (x cos(A) + y sin(A))^2) + x tan(A)

7 0
3 years ago
Read 2 more answers
3. A researcher studied the eyesight of people at different ages. She calculated a vision score for each person in the study and
WITCHER [35]

Answer:

A)Predicted value = 103.5

B)Actual value = 102

C)So, these are not same

Step-by-step explanation:

The researcher used the liney = -0.1 x +110 to model the data.

A)When the researcher substituted the value of x = 65 into this equation, what is the resulting y value?

Substitute value x=65 in equation :

y = -0.1 x +110

y=-0.1(65)+110

y=103.5

Predicted value = 103.5

B)Based on the coordinates of the given data points, what is the actual actual vision score when x=65?

Use the given graph

When x = 65

y = 102

So, The actual actual vision score when x=65 is 102

C)When the researcher substituted x = 65 into the line of equation, is the resulting y value the predicted value or the exit value for the vision score of a 65-year-old? Use your results for parts a and b to answer this question.

Predicted value = 103.5

Actual value = 102

So, these are not same

7 0
3 years ago
Find the length of the hypotenuse of this triangle
Grace [21]
To find the hypotenuse of a right triangle, use the formula for the pythagorean theorem. This is a^2+b^2=c^2, with the two side lengths as a and b and the hypotenuse being c. So, 28^2+21^2=1225
1225 is your hypotenuse length!
Please make me brainliest <3
5 0
3 years ago
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Help I have no idea to do this!! I’m stuck!
marysya [2.9K]

Answer: 7

Step-by-step explanation:

A \cap C denotes the intersection of A and C, or in other words, how many elements are shared between them.

The number of elements is 2 + 5 = 7

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2 years ago
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