Please help. I’ll mark you as brainliest if correct!

Mathematics

1 answer:

Arlecino [84]3 years ago

3 0

Answer B
Explaination:

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The total of two numbers is 28. Four times the smaller number is 7 more than three times the larger number.

navik [9.2K]

Let's define:
$x \ \textless \ y$

So, you can set up a system of equations:
$x + y = 28$
$4x = 7 + 3y$

Now, to solve for both of those values, solve the system of equations:
$x = 28 - y$
$4(28-y) = 7+3y$
$122-4y=7+3y$
$115 -4y = 3y$
$115 = 7y$
$y = 16.43$

Now, plug that y-value into the first equation to solve for x:
$x + 16.43=28$
$x = 11.57$

Now, we have both the values. The smaller value (x) = 11.57 and the bigger value (y) = 16.43.

3 0

4 years ago

What simulation could be used?

Deffense [45]

Answer:

A-a fair cube

Step-by-step explanation:

7 0

3 years ago

A maps key shows that every 5 inches on the map represents 200 miles of actual distance. Suppose the distance between two cities

ryzh [129]

Hello there, and thank you for posting your question here on brainly.

Short answer: 280 miles.

Why?

You can find this out by finding out how much 1 in is by dividing 200 by 5. (200 / 5 ==> 40) So 1 in = 40 miles. Now, we multiply that by 7, so we can find out how much 7 in would be. (7 * 4 ==> 280) 7 inches on the map represents 280 miles.

Hope this helped you! ♥

3 0

3 years ago

Please help ME?!!!!!!

aniked [119]

Answer:

29 is your answer. I hope this helps you! Let me know if I got something wrong or if you need more help :)

Step-by-step explanation:

First, apply distributive property to 3(2+8). 3×2 and 3×8.

$15 + (6 + 24) - 4^2$