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3 years ago

Find x to the nearest tenth. Please answer quick

Mathematics

2 answers:

sertanlavr [38]3 years ago

8 0

Answer:

C, 14.4

Step-by-step explanation:

Using the Pythagorean theorem, you can solve for x (it's a right triangle)

8.6^2+11.5^2=c^2

206.21=c^2

√(206.21)=c

√(206.21)≈14.36 So the answer is C if you round the answer to the nearest 10th.

Alexandra [31]3 years ago

6 0

The answer would be C. 14.4

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What is the answer for this ?

vodka [1.7K]

Answer:

1/9

Step-by-step explanation:

1/9 fills faster than

1/27

1/18

5 0

4 years ago

The swimming team has competed in 45 races this season. They have won 30 races so far. How many races will the team need to win

tatuchka [14]

Answer:

15 races

Step-by-step explanation:

The team has competed in 45 and has won 30. So the success rate is:

Success rate is:

$Sccess\ rate=r= \frac{30}{45}*100\\ =66.7\ percent$

We have to find the number of races the team needs to win for 75% success rate

Which means that

$r = \frac{30+x}{45+x} = 0.75\\$

We have to solve the equation for x

$\frac{30+x}{45+x}=0.75\\ 30+x = 0.75(45+x)\\30+x=33.75+0.75x\\x-0.75x=33.75-30\\0.25x=3.75\\x=\frac{3.75}{0.25}\\ x=15$

The team needs to win 15 races to get 75% success rate ..

4 0

3 years ago

The difference of two numbers is 19. Their sum is 27. Find the numbers

klemol [59]

Answer:

23 and 4

Step-by-step explanation:

x-y=19

x+y=27

x=19+y

(19+y)+y=27

19+2y=27

2y=8

y=4

x-4=19

x=23

23+4=27

23-4=19

6 0

3 years ago

K is the midpoint of segment HL . H has coordinates (1, -7 ) , and K has coordinates(-9, 3 ). Find the coordinates of other end

Andrei [34K]

Answer:

Coordinates of other end point L = ( -19, 13 )

Explanation:

The mid point of the coordinates (a,b) and (c,d) is given by $(\frac{a+c}{2},\frac{b+d}{2})$

Here we have (a,b) = (1,-7) and $(\frac{a+c}{2},\frac{b+d}{2})$ = (-9,3) , we need to find (c,d).

$\frac{a+c}{2} =-9\\ \\ 1+c=-18\\ \\ c=-19\\\\ \frac{b+d}{2} =3\\ \\ -7+d=6\\ \\ d=13$

So coordinates of other end point L = ( -19, 13 )

8 0

3 years ago

Read 2 more answers

Which table represents an arithmethic sequence?

Fiesta28 [93]

Table 3 represents an arithmetic sequence.

Solution:

To find which table represents an arithmetic sequence:

In arithmetic sequence difference of each term is equal.

$d=a_n-a_{n-1}$

Table 1:

$d=a_2-a_1$

= –12 – (–6)

d = –6

$d=a_3-a_2$

= –24 – (–12)

d = –12

Here differences are not equal.

So table 1 not represents an arithmetic sequence.

Table 2:

$d=a_2-a_1$

= 9 – 7

d = 2

$d=a_3-a_2$

= 13 – 9

d = 4

Here differences are not equal.

So table 2 not represents an arithmetic sequence.

Table 3:

$d=a_2-a_1$

= 7.3 – 8.7

d = –1.4

$d=a_3-a_2$

= 5.9 – 7.3

d = –1.4

$d=a_4-a_3$

= 4.5 – 5.9

d = –1.4

$d=a_5-a_4$

= 3.1 – 4.5

d = –1.4

Here differences are equal.

So table 3 represents an arithmetic sequence.

8 0

3 years ago