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Serga [27]
3 years ago
6

Can someone please help me with this? I'll mark brainliest for the right answer

Mathematics
1 answer:
lapo4ka [179]3 years ago
6 0
Where’s the question?
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Does exposure to classical music (through instrument lessons or concert attendance) improve children's scholastic performance? I
Anestetic [448]
The explanatory variable is the amount of exposure the student is given to classical music.
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3 years ago
-7 - 7 ( 8x - 7 ) = - 19 + 5x
Yakvenalex [24]
-7 - 7( 8x - 7 ) = -19 + 5x
⇔ -56x + 49 = -12 + 5x
⇔ -61x = -61
⇔ x = 1
6 0
3 years ago
Find the diameter of the circle. Assume the leg of the triangle is tangent to the circle. Round any decimals to the nearest tent
Anvisha [2.4K]

Answer:

8.7 units

Step-by-step explanation:

Given is a right angled triangle (because the segment with 5 units length is tangent to circle. Tangent is perpendicular to RADIUS or diameter)

Let the length of the diameter be d units

By Pythagoras Theorem:

d =   \sqrt{ {10}^{2} -  {5}^{2}  }  \\  =  \sqrt{100 - 25}  \\  =  \sqrt{75} \\  =  8.66025404 \\  = 8.7 \: units

3 0
3 years ago
What is the surface area and volume? PLEASE EXPLAIN IN DETAIL.
Effectus [21]

Check the picture below.

so to find the surface area of the triangular prism, we simply add the areas of each of the figures composing it, as you can see is really just 2 triangles an 3 rectangles.

\bf \stackrel{\textit{\Large Areas}}{\stackrel{triangles}{2\left[ \cfrac{1}{2}(4)(3) \right]}+\stackrel{\textit{rectangles}}{(3\cdot 10)+(4\cdot 10)+(5\cdot 10)}}\implies 12+30+40+50\implies 132

now, to get the volume is simply the area of the triangular face times the length, well, we know the area of one of the triangles is 6, times 10 is just 6*10 = 60.

7 0
3 years ago
Kathy takes her cat to a veterinarian every year for a check-up. Last year, the difference in the cat's weight from teh year bef
Nataliya [291]
To find the difference in weights from two years ago, you will need to combine the 2 differences from the two years.  

-1.56 and 0.73 becomes -1.56 + 0.73.

To add a positive and a negative number you will subtract the absolute values of the numbers AND use the sign of the number with the bigger absolute value (negative) in your answer.

|-1.56| - |0.73|
1.56 - 0.73 = 0.83
-0.83

The cat lost 0.83 (-0.83) pounds over 2 years.
3 0
3 years ago
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