3 years ago

H= 3/4 (5a+b). solve for a

Mathematics

1 answer:

Mashutka [201]3 years ago

7 0

The answer is

a = -3b +4h
-----------
15

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The price of an item has been reduced by 35%. The original price was $15.

guajiro [1.7K]

Answer:

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15*0.65=9.75

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3 years ago

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Solve the following system. x2 + y 2= 25 2x + y = 10 The solution set

anzhelika [568]

Answer: {(5,0), (3,4)}

Step-by-step explanation:

You can apply the Substitution method:

- Solve for y from the second equation.

- Substitute into the first equation and solve for x.

Then:

$y=10-2x$

$x^2+y^2=25\\x^2+(10-2x)^2=25\\$

(Remember that: $(a\±b)^2=a^2\±2ab+b^2$ )

$x^2+(10^2-2(10)(2x)+(2x)^2)=25\\x^2+100-40x+4x^2=25\\5x^2-40x+75=0\\x^2-8x+15=0\\(x-5)(x-3)=0\\\\x=5\\x=3$

Substitute the values obtained into one of the original equation and solve for y:

$2(5)+y=10\\10+y=10\\y=0\\\\2(3)+y=10\\6+y=10\\y=4$

The solution set is: {(5,0), (3,4)}

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3 years ago

Given that one foot is approximately equal to 0.3048 meters, covert the stadium area of 3 million square feet to square meters.

malfutka [58]

The stadium area is 278,709 meters squared.

If 1 ft = 0.3048 meters 
1square feet = 0.3048 x 0.3048 = 0.09290304 square meter. 

Then 3,000,000 square feet x 0.09290304 sq. m = 278,709.12

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4 years ago

Hey! i’ll give brainliest please help.

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A. China

Step-by-step explanation:

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(2,-4), (x,\ y), A, and B all lie on the line. Find an equation relating x and y.

Olin [163]

Answer:

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Step-by-step explanation:

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