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liubo4ka [24]
3 years ago
5

Answer These Math Questions.

Mathematics
1 answer:
larisa86 [58]3 years ago
5 0
1.

558 can be rounded to 600.

44 can be rounded to 40.

600 x 40 = 24,000



2.

9 x 802 = 9 (800 +2) =7200 + 18 = 7218



3.

3699 x 7 = (3700-1) x 7 = 25,900 - 7 = 25,893



4.

34 x 93 = 34 x (100-7) = 3400 - 238 = 3162



5.

678 x 87 = 58,986
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2{ 5[12+5 (500 - 100)+399]}
notsponge [240]

This is solved by breaking the equasion down.

2 { 5 [12 + 5 (500 - 100) + 399 ]}

2 { 5 [12 + 5 (400) + 399]}

2 { 5 [12 + 2000 + 399]}

2 { 5 [2411]}

2 {12055}

24110

Is this the answer you were looking for?

3 0
3 years ago
Read 2 more answers
Plz help me answer this!!!
larisa86 [58]

Isolate the variable by dividing each side by factors that don't contain the variable.

Exact Form:

c=1/4

Decimal Form:

c=0.25

8 0
3 years ago
There are 12 people in a class. 10 are randomly chosen. How many possible combinations are there?
Mazyrski [523]

long way

12 x 11 x 10 x 9 x 8 x 7 x6 x5 x4 x3x2/ 10x9x8x7x6x5x4x3x2x


but you can shorten that by crossing out identical numbers so you get 12 x 11

12 x 11 = 132 combinations

3 0
3 years ago
Tommy has a screw whose length is 4 cm and its thread length is 16 cm. What is the mechanical advantage of the screw?
Rus_ich [418]

Answer:

a screw is a simple machine that works as a modified inclined plane. You can think of the thread of the screw as an inclined plane wrapped around the shaft of the screw. The slope of the screw is the distance for one complete rotation while the height of the inclined plane is the distance between the threads, known as pitch. The relationship between the pitch and circumference of the screw gives the mechanical advantage.

7 0
2 years ago
What is the total surface area of the cylinder to the nearest square inch ? Use 3.14 for pi
slamgirl [31]

Answer:

1,300.62

Step-by-step explanation:

The formula for a cylinder is A= 2 pi r h +2 pi r^2

7 0
3 years ago
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