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Zigmanuir [339]
2 years ago
13

What is 21 1/2‐6 1/2​

Mathematics
1 answer:
snow_tiger [21]2 years ago
4 0

Answer

15

Step-by-step explanation:

Please mark brainliest.

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Through: (6, 2), perpendicular to<br> y = -x-5 <br> in slope intercept form
True [87]

Answer:

y = x-4

Step-by-step explanation:

y = -x-5

Slope of line is -1.

Slope of perpendicular to line is 1.

Point-slope equation for line of slope 1 that passes through (6,2):

y-2 = 1(x-6)

Rearrange equation to slope-intercept form:

y = 1(x-6) + 2

y = x-4

6 0
2 years ago
What is the surface area of the square pyramid represented by the net? 9 m Enter your answer in the box 6 m 9m 6 m 9 m m 9 m​
Darya [45]

Answer:

144

Step-by-step explanation:

On this shape we are going to splt up the 4 triangles for the square to make it simple.

So, firstly, plug is the h an w of one of the triangles into the formula for the area of a triangle which is hxw/2

H=9

W=6

9x6/2=27

Then multiply the area of the triangle, 27, to get the total area of all 4 triangles (since they all have the same measurements)

27x4=108

108 is the area of all 4 triangles

Next, just put the l and w into the equation for the area of a square which is lxw

L=6

W=6

6x6=36

36 is the area of the square

Lastly, just add the areas of the triangles and the square together

108+36=144

144 is the total area/surface area, of the pyramid

5 0
2 years ago
dives from a platform that is 5 meters above water. dive takes her 2.5 below the surface of the water. How far does ​'s dive tak
weeeeeb [17]

Answer:

7.5 meters

Step-by-step explanation:

Stay safe!!! Stay 6 feet!!

5 0
3 years ago
In a study of the relationship between pet ownership and physical activity in older adults, 586 subjects reported that they owne
hram777 [196]

Answer:

Step-by-step explanation:

In a study of the relationship between pet ownership and physical activity in older adults, 586 subjects reported that they owned a pet, while 1931 reported that they did not. Give a 98% confidence interval for the proportion of older adults in this population who are pet owners. Lower limit Incorrect: Your answer is incorrect. Upper limit

p ± z × (1 - p/n)

z = 98%

p = 586/1931

= 0.3034697048

n = 1931

Approximately = 0.3035

Confidence interval =

0.3035 + 2.326 × ( 1 - 0.3035/ 1931)

3 0
3 years ago
Solve -6x+3y=9, -8x+4y=12 by elimination
Lerok [7]
The answer is 678.09 plus 804
4 0
3 years ago
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