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mrs_skeptik [129]
3 years ago
12

1.If x2 = 60, what is the value of x?

Mathematics
1 answer:
artcher [175]3 years ago
5 0
Q1, The answer is <span>B. plus or minus the square root of 60

x</span>² = 60
x = ?

Since a² = -√a or a² = +√a, then
x = -√60 or
x =  +√60


Q2. The answer is <span>C. 2.83 inches

The area of the square (A) with side s is:
A = s</span>²
Since A = 8 in², then s² = 8 in²
s = √8 in² 
s ≈ 2.828 in
s ≈ 2.83


Q3. The answer is <span>D. plus or minus 11
</span>
x² = 121
x² = 11²
Since a² = -√a or a² = +√a, then
x = -√11²      or      x = +√11²
x = -11          or      x = + 11
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3 years ago
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The midpoint of GH is M( 6,-4). One endpoint is G(8,-2). Find the coordinates of endpoint H.
Finger [1]

Using the midpoint formula, the coordinates of endpoint H are (4, -6).

<h3>The Midpoint Formula</h3>

The midpoint formula is given as: (x_m, y_m) = (\frac{x_1 + x_2}{2}, \frac{y_1 + y_2}{2} )

<em>Where</em>,

(x_m, y_m) = coordinates of the midpoint

(x_1, y_1) = coordinates of the first point

(x_2, y_2) = coordinates of the second point

Given the following:

(x_m, y_m) = M( 6,-4)

(x_1, y_1) = G(8,-2)

(x_2, y_2) = H(?, ?)

Plug in the values into the midpoint formula

M(6, -4) = (\frac{8 + x_2}{2}, \frac{-2 + y_2}{2} )

Solve for the x-coordinate and y-coordinate separately

6 = \frac{8 + x_2}{2}

  • Multiply both sides

6 \times 2 = 8 + x_2\\\\12 = 8 + x_2\\\\12 - 8 = x_2\\\\4 = x_2\\\\\mathbf{x_2 = 4}

-4 = \frac{-2 + y_2}{2}\\\\-8 = -2 + y_2\\\\-8 + 2 = y_2\\\\-6 = y_2\\\\\mathbf{y_2 = -6}

Therefore, using the midpoint formula, the coordinates of endpoint H are (4, -6).

Learn more about midpoint formula on:

brainly.com/question/13115533

3 0
2 years ago
Help me please I need it
7nadin3 [17]

Answer:

A

Step-by-step explanation:

The formula for a rectangular prism is length*width*height. Thus, the equation would be 6*4*16, which equals 384 cm^3.

6 0
2 years ago
A study of bone density on 5 random women at a hospital produced the following results.
IRINA_888 [86]

Answer:

- 0.9503 ; r is not statistically significant ; 0.9031

Step-by-step explanation:

Given the following :

Age (X) :

37

41

57

65

73

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355

345

340

315

310

Using the pearson R value calculator :

The r value of the data % - 0.9503.

This value depicts a very strong negative correlation between age and density of bone.

Using the pearson R calculator to obtain the P- value, the P value obtained is .01332 and hence the r is not significant at P < 0.01.

The Coefficient of determination R^2 can be obtained by getting the square value of R

R^2 = - 0.9503^2

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8 0
3 years ago
Are 12:14 and 60:70 equivalent ratios?<br><br> yes<br> no
NNADVOKAT [17]

Answer:

Yes, they are equalent

Step-by-step explanation:

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both can be simplified to 6:7

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3 years ago
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