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3 years ago

By rounding each number to 1 significant figure,

Mathematics

2 answers:

kari74 [83]3 years ago

8 0

Answer:

23.4 × 13.9 ÷ 0.18 = 1800

Step-by-step explanation:

Alinara [238K]3 years ago

3 0

Answer:

322

Step-by-step explanation:

23.4 rounded to the nearest whole number is 23

13.9 rounded to the nearest whole number is 14

23 times 14 = 322

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a rectangular wall with a length of 10x and width of 20 x has a rectangular doorway with a length of 5x and a width of 2x. What

Shtirlitz [24]

Answer:

∴ The the surface area of the wall is $190x^{2} \ square\ unit$ .

Step-by-step explanation:

Given that,

The length of rectangular wall is $10x$ .

The width of rectangular wall is $20x.$

The length of doorway is $5x.$

The width of doorway is $2x.$

and, we have to find the surface area of rectangular wall.

Now,

The length of rectangular wall is $10x$ .

The width of rectangular wall is $20x.$

∴ Total surface area of a rectangular wall $= Length\ of\ wall\times Width\ of\ wall$

$= 10x\times 20x$

$=$ $200x^{2} \ square\ unit$

Total surface area of a rectangular wall is $200x^{2} \ square\ unit$ .

Again, The length of doorway is $5x.$

The width of doorway is $2x.$

∴Total surface area of doorway $=Lenght\ of\ doorway\times Width\ of\ doorway$

$=5x\times 2x$

$=10x^{2} \ square\ unit$

Total surface area of doorway is $10x^{2} \ square\ unit$ .

∴The remaining surface area of a rectangular wall is $=$ $200x^{2} -10x^{2}$

$=190x^{2} \ square\ unit$

∴ The the surface area of the wall is $190x^{2} \ square\ unit$ .

6 0

4 years ago

Weekly wages at a certain factory are normally distributed with a mean of $400 and a standard deviation of $50. Find the probabi

AlekseyPX

Answer:

$80

Step-by-step explanation:

400÷50= 80 which is the weekly rate of wages

7 0

3 years ago

Read 2 more answers

‼️⭕️‼️PLEASE HELP‼️⭕️‼️

pishuonlain [190]

The answer to the question is 5^x - 10

8 0

3 years ago

The reciprocal of 16 is <br> 16/1

arlik [135]

Answer:

nah its 1/16

Step-by-step explanation:

16 is 16/1 so flip it

7 0

3 years ago

Read 2 more answers

Solve for x. NEED HELP

TiliK225 [7]

Answer:

22.470

Step-by-step explanation:

In this example you have to use the trigonometric function sine which is defined as $sin(\theta) = \frac{opposite}{hypotenuse}$

Plug in known values:

$sin(64) = \frac{x}{25}$

Multiply both sides by 25

$sin(64) * 25 = x$

Approximate sin(64) using a calculator:

$0.89879 * 25 = x$

Simplify

$22.470 \approx x$

7 0

2 years ago