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4 years ago

Can you help with this math

Mathematics

1 answer:

kiruha [24]4 years ago

7 0

Answer:

What math?

Step-by-step explanation:

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A school bus has 25 seats, with 5 rows of 5 seats. 15 students from the first grade and 5 students from the second grade travel

rusak2 [61]

Number of ways the second grade students can sit on the first row is 5! = 5P5
Number of ways 15 first grade students can sit in the remaining 20 seats is 20P15

Therefore, required number of ways is 5P5 * 20P15. (option B)

6 0

3 years ago

Read 2 more answers

100 points and brainliest

Mice21 [21]

You can download the answer here www.hi.com jk it is the right table because you do the left times 1.88 to equal the right

3 0

3 years ago

3k(x+2)+2 = 5x+8<br> How do I solve for k while keeping x smaller then 3?

Gre4nikov [31]

Answer:

k=(5x+6)/(3x+6) and k<3/5

Step-by-step explanation:

3k(x+2)+2 = 5x+8
3k(x+2)=5x+6
3k=(5x+6)/(x+2)
k=(5x+6)/(3x+6)

it is solved for k

and considering the condition for x<3:

3k(x+2)+2 = 5x+8
3kx+6k=5x+6
(5-3k)x=6k-6
x= (6k-6)/(5-3k)
x<3 ⇒ (6k-6)/(5-3k)<3 ⇒ 6k-6<15-9k ⇒ 15k<9 ⇒ k<9/15 ⇒ k<3/5

So,

k=(5x+6)/(3x+6) and k<3/5

7 0

3 years ago

If the measure of angle BCD=51 degrees, solve for x.

BabaBlast [244]

Answer:

$x=5$

Step-by-step explanation:

step 1

Find the measure of angle EFD

In this problem I will assume that ABCD is a parallelogram

In a parallelogram opposite angles are congruent and consecutive angles are supplementary

$m\ angle BCD=m\angle BED=51^o$

$m\ angle FED=(1/2)m\angle BED=(1/2)51^o=25.5^o$ --- > given problem

Remember that the sum of the interior angles in any triangle must be equal to 180 degrees

In the triangle EFD

$m\ angle FED+m\ angle FDE+m\ angle EFD=180^o$

substitute the given values

$25.5^o+55^o+m\ angle EFD=180^o$

$80.5^o+m\ angle EFD=180^o$

$m\ angle EFD=180^o-80.5^o$

$m\ angle EFD=99.5^o$

step 2

Find the measure of angle EFB

we know that

$m\angle EFB+m\angle EFD=180^o$ ---> by supplementary angles

we have

$m\ angle EFD=99.5^o$

substitute

$m\angle EFB+99.5^o=180^o$

$m\angle EFB=180^o-99.5^o$

$m\angle EFB=80.5^o$

step 3

Find the value of x

Remember that the sum of the interior angles in any triangle must be equal to 180 degrees

In the triangle EBF

$m\ angle BEF+m\ angle EFB+m\ angle EBF=180^o$

we have

$m\angle BEF=m\ angle FED=25.5^o$

$m\angle EFB=80.5^o$

$m\angle EBF=(14x+4)^o$

substitute

$25.5^o+80.5^o+(14x+4)^o=180^o$

solve for x

Combine like terms

$(14x+110)^o=180^o$

$14x=180-110$

$14x=70$

$x=5$

4 0

3 years ago

In 2004, there were 10,649 commercial radio stations in the US. About 19.22% of these stations were devoted to country music. Ab

Rom4ik [11]

I think the answer would be 5,405 country music radio stations

5 0

3 years ago