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Elenna [48]
3 years ago
12

Which statement is true​

Mathematics
1 answer:
Wittaler [7]3 years ago
7 0

Answer:

  • The correct answer would be <em>C</em><em> </em>
  • <em>Reason</em><em> </em><em>being</em><em> </em><em>the</em><em> </em><em>same</em><em> </em><em>angle</em><em> </em><em>stays</em><em> </em><em>the</em><em> </em><em>same</em><em> </em><em>after</em><em> </em><em>the</em><em> </em><em>rotation</em><em> </em>
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A flat rectangular piece of aluminum has a perimeter of 62 inches. The length is 15
dexar [7]

Answer:

Width of rectangular piece = x = 8 inches

Step-by-step explanation:

Perimeter of rectangular piece = 62 inches

Let width of rectangular piece= x

and length of rectangular piece = x+15

We need to find width i.e value of x

The formula used for perimeter of rectangle is: Perimeter=2(Length+Width)\\

Putting values in formula and finding Width:

Perimeter=2(Length+Width)\\\\62=2(x+x+15)\\62=2(2x+15)\\62=4x+30\\62-30=4x\\4x=32\\x=\frac{32}{4}\\x=8

After solving we get value of x = 8

So, Width of rectangular piece = x = 8 inches

5 0
3 years ago
Please help question 4
Burka [1]

Answer:

40 miles

Step-by-step explanation:

let distance be d and time be t

Since d varies directly with t, then the equation relating them is

d = kt ← k is the constant of variation

To find k use the condition d = 75 when t = 3

k = \frac{d}{t} = \frac{75}{3} = 25

d = 25t ← equation of variation

when t = 1.6, then

d = 25 × 1.6 = 40 miles

3 0
3 years ago
Find the level of a two-sided confidence interval for t = 2.776 with sample size 5. express the answer as a percent.
Margaret [11]

Answer: NOTHING I JUST WANT THE 10 WITHDRAWED POINTS HAHAHAHAHAHAHAHAHAH

Step-by-step explanation:

NOTJIN

5 0
3 years ago
State the composition of transformations used below that take △ABC to △ A" B" C" .
kupik [55]

We have to identify the transformations that take △ABC to △A"B"C".

The first transformation takes △ABC to △A'B'C'. We can see that the triangle is reflected over the x-axis (horizontal axis).

For example, as C is located on the x-axis, C' is also located on the x-axis. For A and B, its vertical coordinates change sign but mantain its absolute value.

We can write this transformation as:

(x,y)\longrightarrow(x,-y)

This transformation shows that the horizontal coordinates are mantained and the vertical coordinates have their sign inverted.

The second transformation is a translation. The orientation stays the same but the points are translated a fixed number of units in both the horizontal and vertical direction.

We can take any point and its transformed point and compare its coordinates. For example B'' is 6 units to the right and 2 units up.

Then, we can write:

B(-1,2)\longrightarrow B^{\prime}^{\prime}(5,4)

We can generalize this to the rule:

(x,y)\longrightarrow(x+6,y+2)

as the x-coordinate will increase 6 units and the y-coordinate will increase 2 units.

Answer: the transformations are a reflection over the horizontal axis (y=0) and a translation of (x+6,y+2) [First option].

​

3 0
1 year ago
the number of users on a new social media website can be modeled by the function f(t) = 12(1.2)^t , where t is the time, in week
Anna71 [15]

The number of users on new social media site increase as 21, 25, 30, 36,
The average rate of change is given by 5.

The function f (t) = 12 (1.2) ^t show how the rate of users increases in weeks.

<h3>What is Average?</h3>

Average of the values is the ratio of total sum of values to the number of values.

Here,  f (t) = 12 (1.2) ^t is defined in the range of (3, 6)
So the value of the function in its range is given by
1)  f (3) = 12 (1.2) ^3
          = 21
2)  f (4) = 12 (1.2) ^4
   =  25
3)   f (5) = 12 (1.2) ^5
    = 30
4)   f (6) = 12 (1.2) ^6
     = 36
Now the average rate of change = sum of all difference in values at every week / max. Difference in interval of range(3,6)

= f(6)-f(3)/6-3
= 15/3
= 5

Thus required average change of rate is 5.

Learn more about average here:

brainly.com/question/24057012

#SPJ1


7 0
2 years ago
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