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igomit [66]
3 years ago
7

Anne practiced piano for x hours. Steve practiced piano three more hours than Anne. Kate practiced piano five times as long as S

teve. Which expression represents the total time they practiced piano? A x + 3 + 5x B x + 5(x + 3) C x + x + 3 + 5x D x + x + 3 + 5(x + 3)
Mathematics
1 answer:
r-ruslan [8.4K]3 years ago
4 0
The answer should be D) x+(x+3)+5(x+3)
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Stephen Curry's record during the 2017 - 2018 NBA final game is made up of 2-point shots and 3-points.
grandymaker [24]

Answer:

x =  12      ( two points shots )

y =  7       ( three points shots )

Step-by-step explanation:

Let´s call  "x" two points shots,  and  "y" three points shots, then

x  +  y  =  19

2*x  +  3*y  =  45

We have to solve a two-equation system for x and y

y =  19  - x

2*x  +  3 * ( 19 - x ) = 45

2*x  +  57  -  3*x   =  45

- x   =  45 - 57

-x   =  - 12

x  = 12

And     y  =  19  -  12

y  = 7

4 0
4 years ago
The y-intercept of the graph of y=(x-c)(x-d)^3 is
snow_lady [41]

Answer:

Just Make x=0

y_i=(-c)(-d)^3=cd^3

6 0
3 years ago
A line crosses through the points (0,2) and (-10, -16) Which of the following is the slope of the line?
Elodia [21]

Answer:

  9/5

Step-by-step explanation:

The slope between the two points can be found by ...

  m = (y2 -y1)/(x2 -x1)

  m = (-16-2)/(-10-0) = -18/-10

  m = 9/5

The slope of the line is 9/5. Perhaps this is a match to choice A.

3 0
3 years ago
The band has 30 more members than the school chorale. If each group had 10 more members, the ratio of their membership would be
vladimir1956 [14]

Answer:

80 members

Step-by-step explanation:

Let the band members be= b and the chorale members=  c

Then, according to question, b=c+30 and \frac{b+10}{c+10}=\frac{3}{2}

⇒2(b+10)=3(c+10)

⇒2b+20=3c+30

⇒2b-3c=30-20

⇒2b-3c=10

Now, substituting the value of b=c+30, we get

⇒2(c+30)-3c=10

⇒2c+60-3c=10

⇒-c=-50

⇒c=50

Therefore, b=c+30

b=50+30=80

Therefore, there are 80 members in the band.

8 0
3 years ago
What is the surface area of the composite solid?
Nata [24]
The second one 1,658 m2
4 0
4 years ago
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