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3 years ago

Write a system of equations to represent this situation. Use x to represent Portugal and y to represent brazil

Mathematics

1 answer:

Marat540 [252]3 years ago

4 0

Answer:

P + B = 14130P + 150B = 1920

Step-by-step explanation:

P + B = 14130P + 150B = 1920

P = 14 - B

130(14-B) + 150 = 1920

20B = 100

B = 100/20 = 5

P = 14 - 5 = 9

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Please answer fast its timed

Alborosie

Answer:

f(5) = 22

f(9) = 34

Step-by-step explanation:

Plug in 5 and 9 separately for the equation of the x values. Multiply them each and add 7 to get these values 22 and 34.

4 0

3 years ago

Allen is buying a video that originally cost $49.He has a 10%-off coupon and will have to pay a 6% sales which expression will c

Gekata [30.6K]

Answer:

$46.746

Step-by-step explanation:

Allen is buying a video that originally cost = $ 49

Discount coupon = 10%

Sales tax= 6%

Hence, the price of video after discount coupon and sales tax= $ 49 × $\frac{100-10}{100}$ × $\frac{100+6}{100}$

Hence, the price of video after discount coupon and sales tax= $ 49 × $\frac{90}{100}$ × $\frac{106}{100}$

Price of video after discount coupon and sales tax= $ 49 × 0.9× 1.06

price of video after discount coupon and sales tax= $46.746

Hence, the correct answer is $46.746

5 0

3 years ago

If 50 one-cent coins were stacked on top of

Sedbober [7]

To make 8 inch tall column approximately 61 coins required.

Given,

Total one cent coins stacked on top of each other in a column = 50

Height of column = 378 inches

Approximate height of one coin = ( 50 / 378)

= 0.132 inches

To make an 8 inches tall stack No of coins required will be:

Number of coins required = ( total height / height of one coin )

= ( 8 / 0.132 )

= 60.60

≅ 61 coins

To make 8 inch tall column approximately 61 coins required.

Learn more about coins here: brainly.com/question/11677207

#SPJ4

7 0

1 year ago

The hypotenuse of a right triangle is three times the length of one of its legs. The length of the other leg is four feet. Find

andre [41]

Hello!

It is given information that this triangle is a right triangle, meaning that the Pythagorean Theorem can apply here.

$a^2+b^2=c^2$

We can set the length of a leg as an unknown variable $x$ .

$x^2+4^2=(3x)^2$

Remember that it is the whole $3x$ term being squared, meaning that it'll simplify to $9x^2$ , not $3x^2$ .

$x^2+16=9x^2$

$8x^2=16$

$x^2=2$

$x=\sqrt{2}$

This means we can plug back in to find the sides.

The hypotenuse would be $3\sqrt{2}$ , or 4.2.

And the legs would be 1.4 and 4, respectively.

Hope this helps!

7 0

2 years ago

A group of people played a trivia game.

damaskus [11]

9
7,7,8,8,9,9,9,10,10

4 0

2 years ago