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3 years ago

50 apple's cost $25. How much would 75 apples cost?

Mathematics

1 answer:

8_murik_8 [283]3 years ago

8 0

Answer:

$37.5

Step-by-step explanation:

(25/50) x 75 = 37.5

$25/50 .... each apple cost $0.5

0.5 x 75 = 37.5

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Please answer below :-)

Serjik [45]

Answer:

B. 88.8

Step-by-step explanation:

let x represent class y

(x+71.2)/2=80 multiply each side by 2

x+71.2=160 subtract 71.2 by both sides

x=88.8

trial an error

replace x with each of the numbers and see if it plugs in.

example:

(80.5+71.2)/2=80

151.7/2=80

75.85=80?

false. incorrect

another example:

(88.8+71.2)/2=80

160/2=80

80=80?

true. correct

7 0

3 years ago

Solve the following initial-value problem: (ex+y)dx+(3+x+yey)dy=0, y(0)=1 0=

alex41 [277]

Answer:

$e^x+xy+3y+(y-1)e^y=4$

Step-by-step explanation:

Given that

$(e^x+y)dx+(3+x+ye^y)dy=0$

Here

$M=e^x+y$

$N=3+x+ye^y$

We know that

M dx + N dy=0 will be exact if

$\frac{\partial M}{\partial y}=\frac{\partial N}{\partial x}$

$\frac{\partial M}{\partial y}=1$

$\frac{\partial N}{\partial x}=1$

it means that this is a exact equation.

$\int d\left(e^x+xy+3y+(y-1)e^y\right)=0$

Noe by integrating above equation

$e^x+xy+3y+(y-1)e^y=C$

Given that

x= 0 then y= 1

$e^0+0+3+(1-1)e^1=C$

C=4

So the our final equation will be

$e^x+xy+3y+(y-1)e^y=4$

3 0

3 years ago

Explain the difference in meaning between |-3| and -3

rodikova [14]

first one it is the absolute value of -3 and the other one is -3 itself absolute value of -3 mean 3

4 0

3 years ago

The area of one side of a skyscraper is 90,000 square feet. The area of the corresponding side of a scale model is 200 square in

Varvara68 [4.7K]

90000 is 450 times to 200^inches (there is not width is given)

1.6inch i guess..am not sure..need to wait for more answer

7 0

3 years ago

370 weeks into years and weeks

lys-0071 [83]

370 weeks can also equal 7.09589041, if you need to simplify that just say 7 years

6 0

3 years ago