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-Dominant- [34]

3 years ago

5

student were asked to choose their favorite subject if 4/8 of the student chose history and 3/8 chose biology what fraction chos

e either history or biology

2 answers:

liberstina [14]3 years ago

6 0

Answer:

7/8

Step-by-step explanation:

Sonja [21]3 years ago

4 0

Answer:

4/5

Step-by-step explanation:

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Plot the point (4, −3). Start at the origin. Move 4 units . Move 3 units . The point is at .

Naily [24]

Answer:

the point is D

Step-by-step explanation:

brainliest plz

7 0

2 years ago

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Pwease help me anyone. thanks :-) :-) :-) :-) :-) :-) :-) :-)!!!!

adell [148]

A)
$x+3$

b)
$x(x+3)=340\\
x^2+3x-340=0$

c)
$x(x+3)=340\\ x^2+3x-340=0\\
\Delta=3^2-4\cdot1\cdot(-340)=9+1360=1369\\\sqrt{\Delta}=37\\
x_1=\dfrac{-3-37}{2}=-20\\
x_2=\dfrac{-3+37}{2}=17$

It's 17.

3 0

3 years ago

The radius of a truck wheel is 3 ft. what is the approximate circumference if the truck wheel.

Phoenix [80]

Circumference = $2 \pi r$
When you plug that in you should have $(2* \pi ) *3$
Solve that and you have your answer(: I would recommend rounding to the nearest hundreth

8 0

3 years ago

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A body and tackle with a velocity ratio of 5 is used to raise a mass of 50kg through a vertical distance of 20n at a steady rate

matrenka [14]

a. Distance moved by effort = 1 meter

b. Work done by effort = 80 Joules

c. Losses in energy = 18 Joules

<h3>How to determine the parameters</h3>

a. Note that velocity ratio is defined as the ratio of a distance through which any part of a machine moves to the distance moved by its parts

Velocity ratio = distance moved by the effort/distance moved by the body

Where velocity ratio = 5

vertical distance = 20cm

Distance moved by effort = 5 × 0. 20 = 1 meter

b. Formula for work done is given as ;

Work done = Effort × distance moved by effort

Work done = 80 × 1

Work done = 80 Newtons

c. First, let's find the work output

Work output = m g h

Work output = 50 × 9.8 × 0. 20

Work output = 98 Joules

Losses in energy = Work output - work done

Losses in energy = 98 - 80

Losses in energy = 18 Joules

Learn more about work done here:

brainly.com/question/25573309

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7 0

2 years ago

Sami's boss asked him to cut 78⁄5 feet of rope to tie down a load on a truck. How much rope should Sami cut? A. 151⁄5 feet B. 16

Vitek1552 [10]

how many times does 5 go into 78

78/5

it goes 15 times with 3 left over (15*5 = 75 75+3 = 78)

15 3/5 ft

5 0

3 years ago

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