Its a lot easier to do 1.200 - .200. Than to do 1.248- .239. How I see it, estimating always gives you something to fall back on or to help see if your exact answer is accurate

4 0

3 years ago

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An airplane travels a total distance of 5,585 kilometers on a trip. It travels 563 kilometers in the first 40 minutes of the tri

lora16 [44]

Answer:

6.67 hours

Step-by-step explanation: take 5585/837

5 0

3 years ago

Brennan makes a scale drawing of a fort. The scale for the actual fort to the scale

hoa [83]

Answer:

The dimensions of the fort in the drawing is 7 in by 5.5 in

Step-by-step explanation:

A scale can be used to either increase or decrease the size of a given object.

From the question, Brennan used a scale of 3 feet to 1 inch.

scale = $\frac{actual fort}{scale drawing}$

The dimensions of the fort are 21 ft by 16.5 ft. Thus, to determine the dimensions of the drawing;

$\frac{3 ft}{1 in}$ = $\frac{21 ft}{y}$

y = $\frac{21 ft *1 in}{3 ft}$

= 7 in

Also,

$\frac{3 ft}{1 in}$ = $\frac{16.5 ft}{z}$

z = $\frac{16.5 ft*1 in}{3 ft}$

= 5.5 in

Dimensions = y by z = 7 in by 5.5 in

Therefore, the dimensions of the fort in the drawing is 7 in by 5.5 in.

7 0

3 years ago

How many ways can we choose 5 questions from an exam containing 12 questions

stealth61 [152]

Answer:

792

Step-by-step explanation:

Counting Combination

$C(n,r)=\frac{n!}{r!(n-r)!}$

$C(12,5)=\frac{12!}{5!(12-5)!}$

7 0

3 years ago

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