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3 years ago

Value of 4 x 4 - 3 x 3 ÷ 4

Mathematics

2 answers:

True [87]3 years ago

6 0

Answer:

13.75

Step-by-step explanation:

saul85 [17]3 years ago

3 0

Answer:

13.75

Step-by-step explanation:

This problem is done in "order of operations" which means you do your multiplication and division before your addition and subtraction.

= (4*4) - (3*3) / 4

= (16) - ((9)/4)

= 16 - (2.25)

= 16 - 2.25

= 13.75

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2 years ago

Select the mixed number or fraction that is equivalent to 32.029.

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2 years ago

Lupita bought 7 pounds of pretzels at a local wholesaler for $16.80. Her friend Charles bought 5 pounds of pretzels at the super

Galina-37 [17]

Answer:

Charly has the better buy

Step-by-step explanation:

The unit cost is

=16.8/7

=$2.4

Her friend Charles bought 5 pounds of pretzels at the supermarket for $12.75

Unit cost

=12.75/5

=$2.55

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2 years ago

Find the value of x when 6-3x=5x-10x+4

tatuchka [14]

Answer:

x= -1

Step-by-step explanation:

6-3x=5x-10x+4

6-3x=-5x+4

-4 -4

2-3x=-5x

+3x +3x

2=-2

2/-2=-2x/-2

-1=x

7 0

2 years ago

A manufacturer of radial tires for automobiles has extensive data to support the fact that the lifetime of their tires follows a

Diano4ka-milaya [45]

Answer: (C) 0.1591

Step-by-step explanation:

Given : A manufacturer of radial tires for automobiles has extensive data to support the fact that the lifetime of their tires follows a normal distribution with

$\mu=42,100\text{ miles}$

$\sigma=2,510\text{ miles}$

Let x be the random variable that represents the lifetime of the tires .

z-score : $z=\dfrac{x-\mu}{\sigma}$

For x= 44,500 miles

$z=\dfrac{44500-42100}{2510}\approx0.96$

For x= 48,000 miles

$z=\dfrac{48000-42100}{2510}\approx2.35$

Using the standard normal distribution table , we have

The p-value : $P(44500$

$P(z$

Hence, the probability that a randomly selected tire will have a lifetime of between 44,500 miles and 48,000 miles = 0.1591

3 0

2 years ago