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3 years ago

15

in science class 2/3 of the students have a sister. Of the students who have a sister 1/2 have a brother which model shows the f

raction of students that have both a sister and brother

1 answer:

faust18 [17]3 years ago

4 0

Answer:

1/3

Step-by-step explanation:

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The approximate height, h, in meters, traveled by golf balls hit with two different clubs over a horizontal distance of d meters

inna [77]

Answer:

a) 100 metres

b) 10 metres

Step-by-step explanation:

Given: the approximate height, h, in meters, travelled by golf balls hit with two different clubs over a horizontal distance of d meters is given by the functions: $h=-0.002d^2+0.3d\,,\,h=-0.004d^2+0.5d$

To find: distances when the ball is at the same height when either of the clubs are used. Also, to find this height

Solution:

(a)

$-0.002d^2+0.3d=-0.004d^2+0.5d\\d(-0.002d+0.3)=d(-0.004d+0.5)\\-0.002d+0.004d=0.5-0.3\\0.002d=0.2\\d=\frac{0.2}{0.002}=100\,\,metres$

(b)

Put d = 100 in $h=-0.002d^2+0.3d$

$h=-0.002(100)^2+0.3(100)\\=-20+30\\=10\,\,metres$

4 0

3 years ago

The expression for the perimeter of a square with a perimeter of 5 miles is?

Aleksandr-060686 [28]

Answer:

5/4 * 4

Step-by-step explanation:

P = 5 = 4L

4L = 5

L = 5/4

4 0

4 years ago

What is the simplest form for 36 over 9

Molodets [167]

4. because it is reduced and the simplest to understand

4 0

3 years ago

Read 2 more answers

Help pleaseeee, I don't understand

miv72 [106K]

Answer:

B.

Step-by-step explanation:

2x+4-1

3 0

3 years ago

What is the area of the figure above ?

RideAnS [48]

Answer:

256m^2

Step-by-step explanation:

you can cut up the figure.

A1=bh

A1= 24x8

A1=192m^2

A2=bh

A2= bh

A2=8x8

A2=64m^2

A1+A2= Atotal

A=192+64

A=256m^2

4 0

3 years ago