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weqwewe [10]
3 years ago
15

Dean had 30 toy whistles.

Mathematics
2 answers:
Bumek [7]3 years ago
7 0

Answer:

18

Step-by-step explanation:

30-6=24

24-6= 18

    or

6x2=12

30-12= 18

notsponge [240]3 years ago
3 0

Answer:

He has 18 whistles left.

-------WORK------

6x2=12 whistles he gave.

30-12=18 whistles he has left.

Step-by-step explanation:

   

            May  I have brainliest please I'm trying to level up!

                   </3 PureBeauty

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The variable u had a proportional relationship with x as suggested by the graph. use the graph to write an equation that models
Papessa [141]

Answer:

y = 14

Step-by-step explanation:

5 0
3 years ago
A tennis player keeps track of the number of successful first serves he makes. During the first 8 service points of a game, only
Andru [333]

Answer:

He needs 7 more consecutive successful first serves to raise his first serve percentage to 60%.

Step-by-step explanation:

After n consecutive serves, his total number of serves is going to be n+8, since he has already served 8 times. In the best case, his number of successful first serves is n+2.

His percentage of succesful first serves is the division of the number of succesful first serves divided by the total number of serves. So

P = \frac{n+2}{n+8}

We want P = 0.60. So

0.6 = \frac{n+2}{n+8}

n+2 = 0.6*(n+8)

n + 2 = 0.6n + 4.8

n - 0.6n = 4.8 - 2

0.4n = 2.8

n = \frac{2.8}{0.4}

n = 7

He needs 7 more consecutive successful first serves to raise his first serve percentage to 60%.

5 0
3 years ago
A taxi costs 1.65 for the first mile and 0.85 for each additional mile. Which equation could be solved to find the number x of a
diamong [38]
1.65 + 0.85x= $20
           0.85x=$18.35
                 x=21 10/17 
first you write the equation 
then you have to subtract 1.65 from the equation but you also have to subtract it from 20 
then you divide 0.85 from 0.85x and from the 18.35 left over from subtracting 1.65 from 20 
then you should get x=21 10/17 (simplified) but the decimal form is a ongoing fraction so you can just round it up to the nearest hundredth 
5 0
3 years ago
Can someone help me
barxatty [35]

Answer:

y= (-6/5)x -2

Step-by-step explanation:

y=mx+b , where m is the slope, and b is the y -intercept

the y -intercept is where the line intersects the y-axis so b = -2

the slope m= y(rise) /x(run)  = 6/-5 = -6/5 ( to find the slope you have to know how to get from any point on the line to another point on the same line; start at point (0,-2) go up 6(y-rise) and to the left 5(x-run) at point (-5,4))

y= (-6/5)x -2

4 0
2 years ago
I need help with Evaluating a linear expression: Integer multiplication with addition or subtraction. Its hard
Andrei [34K]

Answer:

can you put a link up?

Step-by-step explanation:

3 0
3 years ago
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