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2 years ago

Someone please answer number 7 and number 8

Mathematics

1 answer:

JulsSmile [24]2 years ago

4 0

Answer:

the answer for 7 is 36 and the answer for 8 is 127

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Deanna and Lisa are playing games at the arcade. Deanna started with $15, and the machine she is playing costs $0.75 per game. L

tangare [24]

Answer: After they've played 8 games, they will have the same amount of money remaining.

Step-by-step explanation:

Represent the number of games by the variable x and the remaining amount of money by the variable y.

Deanna's situation can be represented by the equation y = 15 - 0.75x

Lisa's situation can be represented by the equation y = 13 - 0.50x

Now to find out how many games they will have the same amount of money remaining, you have to use substitution and solve for x.

15 - 0.75x = 13 - 0.50x

-13 -13

2 - 0.75x = - 0.50x

+0.75x +0.75x

2 = 0.25x

x = 8

6 0

2 years ago

if it would take billy an hour to race over to his girlfriends house and two hours if he went 20 miles per hour slower how far a

mel-nik [20]

Recall your d = rt, distance = rate * time.

now, let's say she lives "d" miles away, and so if Billy goes say at "r" mph fast to her house, he gets there in 1hr.

now, if he goes 20 mph slower, namely " r - 20 " mph, he gets there in 2 hours, same "d" miles.

$\bf \begin{array}{lccclll}
&\stackrel{miles}{distance}&\stackrel{mph}{rate}&\stackrel{hours}{time}\\
&------&------&------\\
\textit{Billy}&d&r&1\\
\textit{slower Billy}&d&r-20&2
\end{array}
\\\\\\
\begin{cases}
d=r(1)\implies d=\boxed{r}\\
d=2(r-20)\\
----------\\
d=2\left( \boxed{d}-20 \right)
\end{cases}
\\\\\\
d=2d-40\implies 40=d$

5 0

3 years ago

Cos(x)= sin(35) what does x =?

mylen [45]

Here,

cos(x) = sin(35)
cos(x) = cos(90-55)
cos(x) = cos(55)
x = 55

3 0

2 years ago

The total pay for 12 hours of work at a base rate of (p) per hour plus a temporary raise of $2.50 per hour. How would I write th

Naddika [18.5K]

12P+2.50 HOPE THIS HELPS

4 0

2 years ago

13 can someone please explain this

Lady bird [3.3K]

Answer:

Step-by-step explanation:

13).

This is an equilateral triangle.

We see that all 3 angles are equal, so all sides are equal also.

So 2x - 6 = 10

2x = 16

x = 8.

6 0

2 years ago

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