3 years ago

PLS NEED HELP NEED DONE IN 10 MIN.

Mathematics

1 answer:

Grace [21]3 years ago

7 0

Answer: 15

Step-by-step explanation:

12/18=10/x

x=15

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Working together, Shawn and Hector can install a tile floor in 6 hours. It would take Shawn 9 hours to do the job alone.

Yanka [14]

Hector could do it in 3 hours.
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3 years ago

Read 2 more answers

63° 55°<br> X =<br> degrees.

lorasvet [3.4K]

Answer:

Step-by-step explanation:

The sum of these angles must equal 360 degrees.

x+63+55=360

x+118=360

x=242

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2 years ago

If 5 is an element in the domain of f(x)= 8x-21/5, what is the corresponding element in the range?

Delvig [45]

Answer:

The corresponding element in the range when 5 is an element in the domain is $f(5)=\frac{179}{5}$

Step-by-step explanation:

Given that the 5 is an element in the domain of f(x)

The function f is defined by $f(x)=8x-\frac{21}{5}$

To find the corresponding element in the range:

That is put x=5 in the given function f(x)

Therfore f(x) becomes

$f(5)=8(5)-\frac{21}{5}$

$=40-\frac{21}{5}$

$=\frac{200-21}{5}$

$f(5)=\frac{179}{5}$

Therefore corresponding element in the range when 5 is an element in the domain is $f(5)=\frac{179}{5}$

6 0

3 years ago

The reciprocal of 2/3 is 3/2. If the reciprocal of 4x/5 is 1/20, what is x?

Black_prince [1.1K]

Since 4x/5 is the reciprocal of 1/20, that means that 4x/5 = 20/1, or 20. Using this info, we can form the equation $\frac{4x}{5}=20$ . From there we can solve for x.

Firstly, multiply both sides by 5: $4x=100$

Next, divide both sides by 4 and your answer will be $x=25$

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3 years ago

Find the value of X. 87° 92° 105 135

Makovka662 [10]

Answer:

121°

Step-by-step explanation:

Sum of angles in a pentagon = ( n-2) 180

(5-2)180

=3x180

=540°

X+87+92+105+135=540

X+419=540

X=540-419

X=121°

7 0

2 years ago