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Maksim231197 [3]
3 years ago
15

Help on all 3 please

Mathematics
2 answers:
azamat3 years ago
8 0
2. |x|=-7
-x=-7. x=-7
x=7. x=-7


katrin [286]3 years ago
7 0

2.-7

3.-5

4.1.2

Hope this helps you out. I worked them out and got them checked.

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A rectangular pool has a 6 ft
Fantom [35]

How more feet is the outer perimeter of the walkway than the perimeter of the pool is  48 ft

Since 6ft is the width of walkaway

Hence:

Let increase in width  be 12

Let increase in length  be  12

Now let determine How many

more feet is the outer perimeter of the walkway than the perimeter of the pool

Outer perimeter Number of feets  = 2×(12+12)

Outer perimeter Number of feets  = 2×24

Outer perimeter Number of feets  = 48 ft

Inconclusion How more feet is the outer perimeter of the walkway than the perimeter of the pool is  48 ft

Learn more here:

brainly.com/question/11051185

8 0
3 years ago
Perimeter of a rectangle is 15x+17y if the length is 7/2x+7y then find the width of the rectangle
bogdanovich [222]

The perimeter of a rectangle is given by the formula,


P=2l+2w


We substitute,


P=15x+17y


and


l=\frac{7}{2}x+7y


into the above formula to obtain the expression,




15x+17y=2(\frac{7}{2}x+7y)+2w



15x+17y=7x+14y+2w




We now group the x and y terms on the Left Hand Side of the equation to get.


15x-7x+17y-14y=2w




8x+7y=2w



We now divide through by 2 to get,



4x+\frac{7}{2}y=w



Therefore the width of the rectangle is


4x+\frac{7}{2}y



8 0
3 years ago
Five twelfths ot the participants at a conference brought laptop computers with them
elena-14-01-66 [18.8K]

The number of participants with laptop is 115 and without laptop is 161

<u>Step-by-step explanation:</u>

Total number of participants= 276

Participants with laptop = (5/12) 276

= 115

Participants without laptop= 276 - 115

= 161

5 0
3 years ago
The annual tuition at a specific college was $20,500 in 2000, and $45,4120
nika2105 [10]

Answer: the tuition in 2020 is $502300

Step-by-step explanation:

The annual tuition at a specific college was $20,500 in 2000, and $45,4120 in 2018. Let us assume that the rate of increase is linear. Therefore, the fees in increasing in an arithmetic progression.

The formula for determining the nth term of an arithmetic sequence is expressed as

Tn = a + (n - 1)d

Where

a represents the first term of the sequence.

d represents the common difference.

n represents the number of terms in the sequence.

From the information given,

a = $20500

The fee in 2018 is the 19th term of the sequence. Therefore,

T19 = $45,4120

n = 19

Therefore,

454120 = 20500 + (19 - 1) d

454120 - 20500 = 19d

18d = 433620

d = 24090

Therefore, an

equation that can be used to find the tuition y for x years after 2000 is

y = 20500 + 24090(x - 1)

Therefore, at 2020,

n = 21

y = 20500 + 24090(21 - 1)

y = 20500 + 481800

y = $502300

6 0
3 years ago
Which of the following represents the solution to the inequality
amid [387]

Answer:

the question?

Step-by-step explanation:

5 0
3 years ago
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