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Usimov [2.4K]
2 years ago
14

Put the letter choice for the question about the girl's race here.

Mathematics
1 answer:
Paha777 [63]2 years ago
8 0

Answer:

5tf

Step-by-step explanation:

You might be interested in
Can I have the answer? I need this done but the topic really confuses me.
labwork [276]
The value of s = 227 degrees. You can determine this because the area of a triangle is always 180 degrees. Since it is s-47, you add 47 to 180. This equals 227. Plug the number in and you get correct answer.  227-47=180

Hope this helps!
7 0
3 years ago
What is the solution to 3/(2x+1) = 9/3x?
Scorpion4ik [409]

Answer:

Solution x = - 1

Step-by-step explanation:

3 / (2x+1) = 9 / 3x

Cross multiply

3(3x) = 9(2x + 1)

Distributive property

9x = 18x + 9

Subtract 18x from both sides

-9x = 9

Divide both sides by -9

x = -1

7 0
3 years ago
An isosceles trapezoid with a perimeter of 42 inches. Each of the congruent non parallel sides is 5 inches long, and the trapezo
Ratling [72]

Answer:

Longer - 20 in and Shorter - 12 in

Step-by-step explanation:

We know that when we subtract the shorter side from longer we get two cuts named  x:

2 x = a - b  => a - b = 2 x

One of this section ( x ) with height ( h ) and lateral (congruent non parallel) side ( c ) make right triangle, from which we get:

x² = c² - h²  and c = 5 in, h = 3 in

x² = 5² - 3² = 25 - 9 = 16 => x = √16 = 4 => x = 4 in

Now we will replace x = 4  in the equation  a - b = 2 · 4 = 8 and get first equation of the system.

a - b = 8

We also know that the formula for calculating perimeter is:

P = a + b + 2 c  where P = 42 in and c = 5 in

a + b = 42 - 2 · 5 = 42 - 10 = 32

Now  we get the second equation of the system:

a + b = 32

a - b = 8  

When we add first equation to the second we get:

2 a = 40 => a = 40 / 2 = 20 => a = 20 in

When we replace a = 20 in the first equation we get:

20 + b = 32  => b = 32 - 20 = 12 => b = 12 in

God with you!!!

8 0
3 years ago
Brianna has 30 coins in her purse that are quarters and dimes. She has a total of $5.10. How many dimes does Brianna have in her
OleMash [197]

Answer:

51

Step by-step explanation:

Dimes are .10 each so how many ,10's are in 5.10?

4 0
2 years ago
HEEEELP PLEASE I NEED HELP DONT SAY "I DONT KNOW" PLEASE
goblinko [34]

Step-by-step explanation:

Time taken to complete the race

= Distance / Speed

= 56 miles / (14 miles/hr)

= 4 hours. (B)

6 0
3 years ago
Read 2 more answers
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