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katrin [286]
3 years ago
11

Unfabricante de piezas para ensamblar bicicletas afirma que al menos el 95 por ciento de las piezas que fabrica, cumple con las

especificaciones requeridas. Si examinamos una muestra aleatoria de 150 piezas y encontramos que 12 de ellas resultaron defectuosas, ¿Se podrádecir que el dato muestral proporciona suficiente evidencia para rechazar la afirmación del fabricante?. Utilice un error alfa del 0.05.
Mathematics
1 answer:
Mandarinka [93]3 years ago
7 0

Answer:

Step-by-step explanation:

me hablo espanol

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The area if a rectangle is 53.6cm^2.If the length is multiplied by four and the width is halved, the area would then be?
e-lub [12.9K]

Answer:

26.8cm²

Step-by-step explanation:

the area if a rectangle is 53.6cm^2.If the length is multiplied by four and the width is halved, the area would then be?​

Area of rectangle = length x width

53.6 = 4L x 1/2 W

53.6 = 2L × W

Divide both sides by 2

L × W = 53.6 ÷ 2

New area  = 26.8cm²

I hope this was helpful, please mark as brainliest

5 0
3 years ago
PLZ HELP I GIVE BRAINLIEST...<br><br> 2-(-4)=?<br> -5-(10)=?
disa [49]

2 -(-4) = 2 + 4 = 6

-5-(10) = -5 - 10 = -15

I hope it helps you

5 0
3 years ago
Read 2 more answers
Please help i can not fail this!!
ivann1987 [24]
No solution 
i got u fam
4 0
3 years ago
Read 2 more answers
PLEASE HELP<br> Solve for x in the equation 2x^2 - 5x + 1 = 3
Alchen [17]
Answer:

<span>x=<span><span>5±<span>√41</span></span>4</span></span>

Explanation:

<span>2<span>x2</span>−5x+1=3</span>

<span><span>aaaaaaa</span>−3a−3<span>aaa</span></span>Subtract 3 from both sides

<span>2<span>x2</span>−5x−2=0</span>

This equation is not factorable, so use the quadratic formula.

<span>x=<span><span>−b±<span>√<span><span>b2</span>−4ac</span></span></span><span>2a</span></span><span>aaa</span></span> for<span><span>aaa</span>a<span>x2</span>+bx+c=0</span>

<span>a=2,b=−5,c=−2</span>

<span>x=<span><span>−<span>(−5)</span>±<span>√<span><span><span>(−5)</span>2</span>−4<span>(2)</span><span>(−2)</span></span></span></span><span>2⋅2</span></span></span>

<span>x=<span><span><span>5±<span>√41</span></span>4</span></span></span>

hope this helped :)

alisa202

3 0
3 years ago
Read 2 more answers
At an university 70% of the students who attend stay on campus. If 1,380 of the students who attend live off campus, what is the
Alborosie

Answer:

4600

Step-by-step explanation:

We can write a proportion to find the total amount who attend university using the information given. A proportion is two equivalent ratios set equal to each other. Since 70% live on campus, then 30% live off campus and we are told that number is 1,380.

\frac{30}{100}=\frac{1380}{y}

We will cross multiply the numerator of one ratio with denominator of the other. And then solve for y.

30y=100(1380)

30y=138000

y=4600.

There are 4600 students who attend the university.

7 0
3 years ago
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