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vovikov84 [41]
3 years ago
8

Pls help me thank you

Mathematics
2 answers:
valina [46]3 years ago
7 0

Answer:

258

Step-by-step explanation:

6x12x1/2 = 30

30x2=60

13x11=143

5x11=55

60+55+143=258

surface area is 258cm cubed

Ierofanga [76]3 years ago
3 0
You have to find the area of all the sides and add them together. The answer is 390
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How long does a car traveling at 70 mph take to travel 88 miles, in hours
dybincka [34]
So,

Obviously, the car will travel 70 miles in one hour.  So after one hour, the car will have traveled 70 miles.  That leaves 18 miles.

The time it will take for the car to go another 18 miles will be 18 divided by 70.
\frac{18}{70}

Simplify.
\frac{2*3*3}{2*5*7}
\frac{3*3}{5*7}
\frac{9}{35}

Divide.
≈ 0.25714

So a car traveling at 70 mph will take approximately 1.25714 hours or 1.26 hours to travel 88 miles.
7 0
4 years ago
What is the solution to the system of equations? Use the linear combination method.
Korolek [52]
1. {2x−3y=9
{3x+5y=4

2. {(2x−3y=9)×5
{(3x+5y=4)x3

3. {10x-15y=45
{9x+15y=12

4. (10x-15y=45) + (9x+15y=12)= (19x=57)

5. (19x=57)÷19

6. x=3

7. 2(3)-3y=9

8. 6-3y=9

9. -3y=9-6

10. (-3y=3)÷(-3)

11. y=-1

Answer: x=3 and y=-1
3 0
3 years ago
Heather is cashier, she can ring up 12 customers in 9 minutes at this rate how many minutes does it take to ring up 4 customers
stellarik [79]

Answer:

5.2 minutes for 4 costomers.

Step-by-step explanation:

12/9=1.333 (3 repeating)

1.3 x 4 = 5.2

5 0
3 years ago
Gannets start their dive at 30 meters above sea level. They plunge at a speed close to 100 km/hr, diving 21 meters below the sea
Reil [10]

Step-by-step explanation:

30+21= 51 meters

I think this is the answer

3 0
3 years ago
Solve for x I need help please
olchik [2.2K]
Check the picture below.

bear in mind that, a perpendicular line stemming from the right-angle like so, creates three similar triangles, a large one, containing the other two smaller ones, a medium and a small.

so.. .we can just use the medium and small proportions.

solve for "x".

5 0
4 years ago
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