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3 years ago

Qual a expressão algébrica representa o perímetro das figuras a seguir:

Mathematics

1 answer:

-Dominant- [34]3 years ago

4 0

Answer:

mom

Step-by-step explanation:

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A certain drug is made from only two ingredients: compound A and compound B. There are 5 milliliters of compound A used for ever

ale4655 [162]

<h3>Answer: 410 mL </h3>

=====================================================

Explanation:

The ratio of A to B is 5:3

Multiply both parts by x to get 5x:3x

We need 5x parts of A and 3x parts of B

Adding those parts should get us 656 mL total

A+B = total

5x+3x = 656

8x = 656

x = 656/8

x = 82

Therefore, we need 5x = 5*82 = 410 mL of compound A

Also, we need 3x = 3*82 = 246 mL of compound B

In total, we have A+B = 410+246 = 656 mL which helps confirm the answer.

-----------

Side note: The ratio 410:246 reduces to 5:3 after dividing both parts by 82.

7 0

3 years ago

You are ordering softballs for two softball leagues. The Pony Leagues uses an 11-inch softball prices at $2.75. The Junior Leagu

Zigmanuir [339]

Answer:

I have ordered <u>30</u> softballs of 11-inch and <u>50</u> soft balls of 12-inch.

Step-by-step explanation:

Let the number of 11-inch softball be 'x'.

Let the number of 12-inch softball be 'y'.

Given:

Total number of soft balls = 80

Now we know that.

Total number of soft balls is equal to sum of the number of 11-inch softball and the number of 12-inch softball.

framing in equation form we get;

$x+y=80 \ \ \ \ equation \ 1$

Also Given:

Price of 11- inch softball = $2.75

Price of 12-inch softball = $3.25

Total Bill = $245

Now we know that;

Total bill of soft balls is equal to sum of Price of 11- inch softball multiplied by the number of 11-inch softball and Price of 12- inch softball the number of 12-inch softball.

framing in equation form we get;

$2.75x+3.25y = 245 \ \ \ \ equation \ 2$

Now Multiplying equation 1 by 3.25 we get;

$3.25(x+y)=80\times 3.25\\\\3.25x-3.25y = 260 \ \ \ \ equation \ 3$

Now Subtracting equation 2 from equation 3 we get;

$(3.25x+3.25y)-(2.75x+3.25y)=260-245\\\\3.25x+3.25y-2.75x-3.25y = 15\\\\0.5x = 15$

Dividing both side by 0.5 we get;

$\frac{0.5x}{0.5}= \frac{15}{0.5}\\\\x= 30$

Now Substituting the value of 'x' in equation 1 we get;

$x+y=80\\\\30+y=80\\\\y =80-30 =50$

Hence I have ordered <u>30</u> softballs of 11-inch and <u>50</u> soft balls of 12-inch.

6 0

3 years ago

A social media influencer charges $50 per hour for a public appearance plus $250 for the ownership rights of the photos taken at

padilas [110]

Answer:

its d

Step-by-step explanation:

x is the number of hours he charges for

5 0

3 years ago

WILL GIVE BRAINLIEST

kotykmax [81]

Answer:

It the W or the orange point

8 0

2 years ago

Bryan's hockey team is purchasing jerseys. The company charges $250 for a onetime set-up fee and $23 for each printed jersey. Wh

Ugo [173]

Answer:

250+23x=y

Step-by-step explanation:

x represents the amounts of jerseys the team buys. Once that amount is known they will multiply. $23x= 23 *x$

y is the amount of money spent, or the sum.

7 0

3 years ago