3 years ago

Which expression is equivalent to ? 1 ဒီ х . har

Mathematics

1 answer:

horsena [70]3 years ago

6 0

I’m confused on this to. I really need help on some of my questions can anyone help me please

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Evaluate 5x-x/y when x=4y and y=2

kirza4 [7]

................................

8 0

4 years ago

4x-2= -14

Finger [1]

Step-by-step explanation:

it is true though because

4 x -3 = -12

and

-12 - 2 = -14

4 0

3 years ago

A train left Podunk and traveled north at 75 km/h. Two hours later, another train left Podunk and traveled in the same direction

Andreyy89

Answer:

8 hours

Steps:

Train 1:

Hours: 1, 2, 3, 4, 5, 6, 7, 8

Miles: 75, 150, 225, 300, 375, 450, 525, 600

Train 2:

Hours: 1, 2, 3, 4, 5, 6, 7, 8

Miles: 0, 0, 100, 200, 300, 400, 500, 600

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3 years ago

An athlete ran a sprint of 100 ft in 3.1 s. At what speed was the athlete running in miles per hour? Round to the nearest mile p

nordsb [41]

Answer:

22 miles per hour

Step-by-step explanation:

we know that

The speed is the ratio of distance by the time

Let

d -----> distance in feet

t ----> time in seconds

s ----> the speed in ft/sec

$s=\frac{d}{t}$

we have

$d=100\ ft\\t=3.1\ sec$

substitute

$s=\frac{100}{3.1}$

$s=32.26\frac{ft}{sec}$

Remember that

$1\ mi=5,280\ ft$

$1\ h=3,600\ sec$

Convert ft/sec to mi/h

$s=32.26\frac{ft}{sec}=32.26\frac{(1/5,280)}{(1/3,600)}=32.26(\frac{3,600}{5,280})=22\ \frac{mi}{h}$

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3 years ago

A security alarm requires a four-digit code. The code can use the digits 0–9 and the digits cannot be repeated. What is the appr

Shkiper50 [21]

The approximate probability that the code only contains odd numbers is 0.02381.

3 0

3 years ago

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