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Lady_Fox [76]
3 years ago
13

Ok I need help is this correct? I tried but I gave up.

Mathematics
1 answer:
Bas_tet [7]3 years ago
4 0
X+y=12
8x+10y=102

8x+8y=96
8x+10y=102 _
-2y= -6
y=3

x+y=12
x=12- 3
x=9

or
8x+10y=102
8x+30=102
8x=102-30
8x=72
x=9
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A certain ferry moves up and down a river between Town A and
Blizzard [7]

Answer: 60 miles

Step-by-step explanation:

Given

It takes ferry 2 hours to travel to town A and only 1.5\ hr to travel back to town B.

Speed of current is u=5\ mph

Suppose the speed of the ferry is v mph

Distance traveled in both the cases is same, but it took more time traveling to city A that is, ferry is moving upstream and downstream for returning time.

\Rightarrow 2(v-5)=1.5(v+5)\\\Rightarrow 2v-10=1.5v+7.5\\\Rightarrow 0.5v=17.5\\\Rightarrow v=35\ mph

Distance between the towns is 2\times (35-5)=60\ \text{miles}

5 0
2 years ago
Read 2 more answers
A box of cereal states that there are 93 calories in a three fourths
cupoosta [38]

93/3 = 31, 31 x 4= 124

Calories per cup is 124

There are 372 calories in three cups

7 0
3 years ago
Which of the following describes a situation in which the total distance a baseball player travels is zero meters from his start
ipn [44]
The first one
Running forward is adding
Running opposite direction is subtracting
5-5
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5-5 is the only one that equals 0
5 0
3 years ago
A summarine is only allowed to change his depth by rising Toward the surface in 50 m stages it starts off at negative 235 m how
Vladimir [108]

Answer:

It will take 5 stages to reach the surface.

Step-by-step explanation:

-225/50=4.5 or what times 4.5 equals -225

Hope this helps.

3 0
2 years ago
1 year = how many seconds? Last question in my h.w and idk how to do it:/
Novay_Z [31]
This should help
60 sec = 1min
60min = 1 hour
24hour = 1day
7 days = 1 week
around 4.3 weeks = 1month
12 months = 1 year

or you could use 365 days and times that by 24 than times that by 60 to get mins and again by 60 to get seconds.

hope this helps 
5 0
3 years ago
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