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julia-pushkina [17]
2 years ago
15

Can you help me:(( please..

Mathematics
1 answer:
andreev551 [17]2 years ago
4 0

Answer:

it's a non-function

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Find two consecutive positive integers such that the sum of their squares is 145
DerKrebs [107]

Answer:

8,9

Step-by-step explanation:

(x)^2+(x+1)^2=145

x²+x²+2x+1=145

2x²+2x+1-145=0

x²+x-72=0

x²+9x-8x-72=0

x(x+9)-8(x+9)=0

(x+9)(x-8)=0

x=-9(rejected being negative)

x=8

x+1=8+1=9

7 0
3 years ago
Solve the absolute value equation.<br><br> 4 − |x| = 1
Alika [10]

Answer:

x = +3 and -3

Step-by-step explanation:

Start by solving for |x| as normal:

4 - |x| = 1

- |x| = -3 (subtract 4 from both sides)

|x| = 3 (multiply both sides by -1)

the absolute value of x means it will be positive, so you need to recognize that whatever is in the absolute value bars will be made positive.

this means that x = 3 AND -3, because both |3| and |-3| = 3

check your answer by plugging x = 3 and x = -3 back in:

4 - |3| = 1

4 - 3 = 1

1 = 1

and

4 - |-3| = 1

4 - 3 =  1

1 = 1

5 0
2 years ago
Read 2 more answers
Hello, I need help!!!!?
sweet [91]
Volume of the prism is given by:
V=(base area)*(height)
thus:
base area=1/2(a+b)*h
=1/2(1.4+0.6)*2
=2 m²

Thus the volume will be:
V=2*1
V=2 m³

Volume after 30 min:
V=2×(0.8)
V=1.6 m³

Rate of emptying the tank is:
(2-1.6)/30=1/ 75 m³/min
time taken to empty the tank:
time=volume/rate
time=2/(1/75)
=150 min

3 0
3 years ago
PLEASE help!!!! Jackie runs and dances for a total of 55 minutes every day. She dances 25 minutes more than she runs. Part A: Wr
Andrew [12]
Part a:

x + y = 55

y = x + 25

part b:

jackie runs 15 minutes every day.

part c:

it is not possible for jackie to spend 45 minutes a day dancing, since the time she spends dancing and running is 55 minutes, and we know that it takes 15 minutes to run

step-by-step explanation:

let's call and while jackie is dancing

let's call x while jackie is running

then we know that jackie runs and dances for a total of 55 minutes every day

this means that:

x + y = 55

we also know that jackie dances 25 minutes more than she runs.

this meant that:

y = x + 25

now we substitute the second equation in the first and solve for the variable x

x + x + 25 = 552x = 55-252x = 30x = 15

jackie runs 15 minutes every day.

now we find the value of the variable -y

15 + y = 55y = 55-15y = 40

note that it is not possible for jackie to spend 45 minutes a day dancing, since the time she spends dancing and running is 55 minutes, and we know that it takes 15 minutes to run
7 0
4 years ago
Read 2 more answers
Question 7: 10 pts
levacccp [35]

The teacher ordered the students in 24 ways.

We have given that the total number of students is 4.

4 students are assigned to give presentations.

We have to find the arrangement of the 4 students.

<h3>What is the arrangement?</h3>

An arrangement (or ordering) of a set of objects is called a permutation. (We can also arrange just part of the set of objects.)

In a permutation, the order that we arrange the objects n is important.

4 students can be arranged by 4! ways.

4!=4*3*2*1\\  =12*2\\=24

Therefore option 3 is correct.

The teacher ordered the students in 24 ways.

To learn more about the permutation visit:

brainly.com/question/12468032

#SPJ1

3 0
2 years ago
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