Ask question

Ask question

All categories

3 years ago

5

2

1 answer:

Sonbull [250]3 years ago

6 0

Answer:

It's OC

Step-by-step explanation:

Because what it's asking you is what is the distance he's running in that time.because d stands for the amount of distance covered in a second so you need to multiply the seconds against the distance that he covers in that second to get the 100 m that he runs in all

You might be interested in

What is the product of 5−2i and 3−4i?<br> Enter your answer, in standard form, in the box

Lelechka [254]

Answer:

$\boxed{7-26i}$

Step-by-step explanation:

The binomials are multiplied in the usual way, using FOIL or the distributive property:

(5 -2i)(3 -4i) = 15 -20i -6i +8i²

Since i² = -1, this becomes ...

= 15 -20i -6i -8 = 7 -26i

7 0

2 years ago

Please complete z2+9z-90=(z-6)(z+?) ...?

notka56 [123]

The answer is: (z - 6)(z + 15)

z² + 9z - 90 = z*z + 15z - 6z - 6*15 =
= (z*z + 15z) - (6z + 6*15) =
= z(z + 15) - 6(z + 15) =
= (z - 6)(z + 15)

4 0

3 years ago

Read 2 more answers

Gracie plans to buy a new pair of shoes for $75.00, however, the manager sells them to her for

Cerrena [4.2K]

15% reason 75 minus 60=15

6 0

2 years ago

Which of the following is equivalent to 1 cup

kipiarov [429]

1 cup=16 tablespoons

6 0

2 years ago

Read 2 more answers

In the isosceles △ABC m∠ACB=120° and AD is an altitude to leg BC . What is the distance from D to base AB , if CD=4cm?

7nadin3 [17]

Correct answer is: distance from D to AB is 6cm

Solution:-

Let us assume E is the altitude drawn from D to AB.

Given that m∠ACB=120° and ABC is isosceles which means

m∠ABC=m∠BAC = $\frac{180-120}{2}=30$

And AC= BC

Let AC=BC=x

Then from ΔACD , cos(∠ACD) = $\frac{DC}{AC} =\frac{4}{x}$

Since DCB is a straight line m∠ACD+m∠ACB =180

m∠ACD = 180-m∠ACB = 60

Hence $cos(60)=\frac{4}{x}$

$x=\frac{4}{cos60}= 8$

Now let us consider ΔBDE, sin(∠DBE) = $\frac{DE}{DB} =\frac{DE}{DA+AB} = \frac{DE}{4+8}$

$DE = 12sin(30) = 6cm$

7 0

3 years ago