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alina1380 [7]
3 years ago
5

Solve 2x² - 11x + 5 = 0.

Mathematics
1 answer:
goldenfox [79]3 years ago
8 0

Answer:

x=1/2, x=5

Step-by-step explanation:

2x^2-11x+5=0

Factor them

(x-0.5)(x-5)

x=0.5 or 1/2

x=5

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Find how many quarts of 6% butterfat milk and 1% butterfat milk should be mixed to yield 75 quarts of 3% butterfat milk.
IgorC [24]

Answer:

30 gallons of 6% milk, and 45 gallons of 1% milk.

Step-by-step explanation:

x=quarts of 6% butterfat

<h2>First, write an equation.</h2>

0.06x+0.01(75-x)=0.03*75

<h2>Multiply both sides by 100.</h2>

0.06x*100+0.01*100(75-x)=100*0.03*75

<h2>Simplify</h2>

6x+75-x=3*75

6x+75-x=225

<h2>Solve</h2>

5x=225-75=150

5x=150

x=30

75-30=45

So, we need 30 gallons of 6% milk, and 45 gallons of 1% milk.

8 0
3 years ago
Read 2 more answers
One type of insect is 0.0052 meter long. What is this length in scientific notation?
____ [38]
Ok so...

You want to move the decimal point to the right until the number is greater than 1 but less than 10.

The number will end up being 5.2

You moved the decimal point 3 times to the right.
So it will be 5.2 x 10^-3. It is negative because you moved it to the right. The exponent would be positive if you moved it to the left

5 0
3 years ago
El interior de un tanque que contiene agua, tiene una presión manométrica de 300 kPa. ¿Qué profundidad tiene el tanque de agua?
zmey [24]

Respuesta:

30,6 metros

Explicación paso a paso:

Dado :

Presión = 300 Kpa

Usando la fórmula que relaciona la presión y la profundidad:

Presión = profundidad * aceleración debida a la gravedad * densidad del agua

Densidad del agua = 1000 kg / m³

Presión = 300Kpa = 300 * 10 ^ 3 Pa

300 * 10 ^ 3 Pa = profundidad * 9,8 * 1000

300000 = profundidad * 9800

Profundidad = 300000/9800

Profundidad = 30,612

Profundidad = 30,6 m

5 0
2 years ago
Calculate the original price of these items before the
Aloiza [94]

Answer:

50 and 30.94

Step-by-step explanation:

  • a

The coat cost 46.5 pounds after a 7 percent reduction

so we can write:

  • 46.5⇒ (100-7)⇒ 93 percent
  • x(the initial price) ⇒ 100 percent

using the proprtionality relation:

x= (100*46.5)/93 = 50

so the initial price of the coat is 50 pounds

  • b

The jumper costs 32.8 pounds after an increase of 6 percent

so:

  • 32.8⇒(100+6)⇒ 106 percent
  • x (the initial price)⇒ 100 percent

using proportionality:

x= (100*32.8)/106 = 30.94

the initial price is 30.94 pounds

7 0
3 years ago
Read 2 more answers
Please help! Due in 10 minutes, 7th grade math
RUDIKE [14]

Answer:

C.

Step-by-step explanation:

I predict these tingz

8 0
2 years ago
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