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3 years ago

Find the sum of (x+5) + (-4x-2) + (2x-1) =

Mathematics

1 answer:

umka2103 [35]3 years ago

5 0

It would be -x+2 because you can do it two ways. You could have either done it my way.

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In a survey of 300 voters, 68 said they voted for Candidate A. How many votes can Candidate A expect to receive if the populatio

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Hello, I believe the answer is 2,244

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3 years ago

A scientist needs 60 liters of a 40% acid solution. He currently has a 20 % solution and a 50 % solution. How many liters of ea

Stella [2.4K]

percent ---------------- quantity

Acid type I 60.00% ---------------- x liters

acid type II 30.00% ------ 60 - x liters

Mixture 40.00% ---------------- 60

Total 60 liters

60.00% x + 30.00% ( 60 - x ) = 40.00% * 60

60 x + 30 ( 60 - x ) = 2400

60 x + 1800 - 30 x = 2400

60 x - 30 x = 2400 - -1800

30 x = 600

/ 30

x = 20 liters 60.00% Acid type I

40 liters 30.00% acid type II

brainliest plzz

6 0

3 years ago

A rectangle is inscribed in a right isosceles triangle, such that two of its vertices lie on the hypotenuse, and two other on th

Rufina [12.5K]

Answer:

Part 1) The base is $25\ in$ and the height is $10\ in$

Part 2) The base is $7.5\ in$ and the height is $18.75\ in$

Step-by-step explanation:

case 1) Right isosceles triangle of the left

Let

x------> the base of the rectangle

y----> the height of the rectangle

Remember that

In a right isosceles triangle the lengths of the legs of the triangle is the same

$y+x+y=45$

$2y+x=45$ ----> equation A

$\frac{x}{y} =\frac{5}{2}$

$x=2.5y$ -----> equation B

substitute equation B in the equation A

$2y+2.5y=45$

$4.5y=45$

$y=10\ in$

Find the value of x

$x=2.5(10)=25\ in$

case 2) Right isosceles triangle of the right

Let

x------> the base of the rectangle

y----> the height of the rectangle

Remember that

In a right isosceles triangle the lengths of the legs of the triangle is the same

$y+x+y=45$

$2y+x=45$ ----> equation A

$\frac{y}{x} =\frac{5}{2}$

$y=2.5x$ -----> equation B

substitute equation B in the equation A

$2(2.5x)+x=45$

$6x=45$

$x=7.5\ in$

Find the value of y

$y=2.5(7.5)=18.75\ in$

3 0

3 years ago

Elena has $225 in her bank account. She takes out $20 each week for w weeks. After w weeks she has d dollars left in her bank ac

Diano4ka-milaya [45]

Answer:

225 - 20w = d

Step-by-step explanation:

7 0

4 years ago

Read 2 more answers

Find the volume of the cone.

mojhsa [17]

Answer:

$14.50$

...........

6 0

3 years ago