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Korvikt [17]
3 years ago
11

How many ways can 4 people sit in a row of 7 ​chairs?

Mathematics
2 answers:
mafiozo [28]3 years ago
7 0
Four people can sit in a row of seven in three ways
Ghella [55]3 years ago
6 0

7\cdot6\cdot5\cdot4=840

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Okay, I tried this a bunch of times but never found out. <br> Simplify the expression:<br> 4(b-6)+19
sertanlavr [38]
<span>4(b-6)+19

Easily you would better start with distributing 4 to the brackets

4(b -6) = 4*b    -     4*6 = 4b  -  24

then add 19 to these terms, we get:

4b - 24 + 19

combine like terms (which are -24 + 19), we get:

4b - 5


That's it....


Hope that helps
</span>
7 0
3 years ago
A washer and a dryer cost 854$ combined. The washer costs $96 less than the dryer. What is the cost of the dryer
svetoff [14.1K]

Answer:

950

Step-by-step explanation:

854+96=950 I need more characters so ingnor this sentence.

7 0
3 years ago
At the annual dogs show chantel noticed that there were three more Scottie’s than schnauzers. She also realized that the number
galben [10]
<span>Let us start with the schnauzers, the easiest one to imagine. Let us assume that there were x number of schnauzers. Scottie's are 3 more than schnauzers. So their number is x+3 Wire haired terriers are 5 less than twice the number of schnauzers. So their number is 2x -5 (2x for twice the number of schnauzers) Now add all these numbers. That is x + x+3 + 2x-5 = 4x -2 The total number of dogs, 78, is given in the question Now we know that 4x -2 =78 4x = 78 +2 = 80 Therefore x = 80/4 = 20. So there were 20 schnauzers, 23 Scottie’s and 35 wire haired terriers</span>
6 0
3 years ago
The diameter of a semicircle is 6 miles. What is the semicircle's perimeter?
koban [17]

Answer:

15.42mi

Step-by-step explanation:

Use the formula for a semicircle's perimeter.

P=\frac{1}{2}\pi *d+d

Plug in 6 for d.

P=\frac{1}{2}\pi*6+6

Let's use 3.14 for \pi, just to make it easier, but of course, if it states to round it to something else, just plug in that many values for \pi.

P=\frac{1}{2}(3.14)*6+6 \\ \\ P=1.57*6+6 \\ \\ P=9.42+6 \\ \\ P=15.42

5 0
3 years ago
Read 2 more answers
Triangle KNM is shown. Triangle K N M is shown. Angle M K N is 25 degrees. Angle K N M is 130 degrees. Angle N M K is 25 degrees
mars1129 [50]

Answer:

<h3>Two of the sides of triangle KNM are the equal</h3>

Step-by-step explanation:

From the triangle KNM, we can see that two of the angles M K N and Angle N M K are the same. If two of the angles are equal this means that two of the sides of the triangles are also equal. This type of triangle is known as an ISOSCELES TRIANGLE.

An isosceles triangle is a triangle that has two of its angles and sides to be equal.

6 0
2 years ago
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