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2 years ago

A box is 50 cm long. Which of these is the closet to the length of this box in feet ? (1 inch = 2.54cm)

Mathematics

2 answers:

maksim [4K]2 years ago

7 0

19 feet is the closest without going over 50cm

Nitella [24]2 years ago

4 0

Answer:

1ft 7.7in/1.64 ft

Step-by-step explanation:

50/2.54=19.69in

12in=1ft

so 1ft 7.7in

19.69/12=1.64

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Evaluate the discriminant of the equation. Tell how many solutions each equation has and whether the solutions are real or imagi

cupoosta [38]

Answer:

D=-4<0, the equation has no real solutions, it has two imaginary solutions.

Step-by-step explanation:

The quadratic equation $x^2 +4x+5=0$ has coefficients

a=1,

b=4,

c=5.

The discriminant D is the expression

$D=b^2-4ac.$

Hence,

$D=4^2-4\cdot 1\cdot 5=16-20=-4$

Since the discriminant is negative, the equation has no real solutions, it has two imaginary solutions.

4 0

3 years ago

Read 2 more answers

What's the unit rate of 162 water bottles in 9 cases

lianna [129]

Simplify 162/9 by 3.

162/9= 18
___ ___

9/9= 1

So, basically 18 water bottles.

8 0

3 years ago

Find the limit (if it exists). (If an answer does not exist, enter DNE.) lim x→(−1/2)+ 6x2 + x − 1 4x2 − 4x − 3

Evgesh-ka [11]

You might be able to do direct substitution.

5 0

2 years ago

It has taken me 32 minutes to drive 48 km. If the total length of my journey is 146 km and I

pentagon [3]

Answer: 1h and 25min

To find how long you can drive in a minute we do 48 divided by 32 = 1.5. So it takes 1 min to drive 1.5km

Then we 146 divided by 1.5 = 97 and a third to find out how long it takes to drive 146km.

Then we convert it to hours to get 1h and 57min.

Then we - 32 because we already drove 32min. 1h and 57min - 32 = 1h and 25min

6 0

2 years ago

A random variable r is normally distributed with a mean of 7 and a standard deviation of 1.5. Find the value of w so that P (8.8

a_sh-v [17]

Answer:

The answer is explained below

Step-by-step explanation:

Given that:

mean (μ) = 7 and standard deviation (σ) = 1.5.

The z score is used in statistic used to measure the number of standard deviation by which the raw score is above or below the mean value. It is given by:

$z=\frac{x-\mu}{\sigma}, where\ x\ is\ the \ raw\ score$

To find the Probability that x < 8.8, we first find the z score using:

$z = \frac{x-\mu}{\sigma}=\frac{8.8-7}{1.5}=1.2$

From the z tables, P(x < 8.8) = P(z < 1.2) = 0.8849 = 88.49%

4 0

3 years ago