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postnew [5]
2 years ago
15

Pls help me whoever give me an correct answer they will receive a brainiest

Mathematics
1 answer:
emmainna [20.7K]2 years ago
6 0

Answer:

80

Step-by-step explanation:

The ratio is 40:1, we have to find x is x:2. 40:1=x:2, 40/1=x/2. 40=x/2, 80=x.

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Solve the inequality 2x + 8 < 5x − 4.
Jobisdone [24]

The answer should be X>4

Rearrange the equation by subtracting what is to the right of the greater than sign from both sides of the inequality :  

                    2*x+8-(5*x-4)<0  

Step by step solution :

Step  1  :

Pulling out like terms :

1.1     Pull out like factors :

  -3x + 12  =   -3 • (x - 4)  

Equation at the end of step  1  :

Step  2  :

2.1    Divide both sides by  -3  

Remember to flip the inequality sign:  

Solve Basic Inequality :

2.2      Add  4  to both sides

            x > 4


3 0
3 years ago
What is solve 5x-65=3x-17
NikAS [45]
If you would like to solve 5x - 65 = 3x - 17, you can do this using the following steps:

5x - 65 = 3x - 17
5x - 3x = 65 - 17
2x = 48
x = 48/2
x = 24

The correct result would be 24.
5 0
2 years ago
What percent of 153.5 is 33?
Dvinal [7]

Answer:

21.5%

Step-by-step explanation:

Percent = Part/Whole * 100:

\frac{33}{153.5}*100\approx21.5%

4 0
1 year ago
How you know its smallest to greatest 10, negative 10, 5 ,Negative 5 , 0
zmey [24]
This is the order from smallest to greatest: -10,-5,0,5,10
6 0
3 years ago
The following information was collected on 20 randomly chosen high school students, which compared their IQ score to musical apt
Mashcka [7]

Answer:

Y = 0.4925X - 22.26 ;

(-12.413, 13.398) ;

Yes, there is

Step-by-step explanation:

X = IQ Score ; Y = musical aptitude

The regression equation from the table given using the slope and intercept coefficient :

Y = 0.4925X - 22.26

0.4925 = slope ; Intercept = - 22.26

The 95% confidence interval of the slope :

Confidence interval = b ± Tcritical*SE

Tcritical at 95%, df = n - 2 = (20 - 2) = 18

Tcritical = 2.1009

b = slope Coefficient = 0.4925

S.E = 6.143

Hence, we have :

Confidence interval = 0.4925 ± (2.1009 * 6.143)

Confidence interval = 0.4925 ± 12.9058287

Lower boundary = 0.4925 - 12.9058287 = - 12.413

Upper boundary = 0.4925 + 12.9058287 = 13.398

(-12.413, 13.398)

There is a significant relationship between IQ score and musical aptitude because, 0 is within the confidence interval obtained.

6 0
3 years ago
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