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3 years ago

Which expression could be used to solve this problem?

2 answers:

6 0

Well, the time spent reading in one day is 10 minutes + 15 minutes. In order to see how many minutes he reads in 5 days, you want to multiply the amount he reads in 1 day by 5.

So, the equation is 5x(10+15)

Semmy [17]3 years ago

3 0

It's A. Let me know if you need an explanation!

You might be interested in

If △ABC ~ △DEF, find the length EF.

hodyreva [135]

Answer:

EF=BC (by CPCT) if both Triangle are ~

8 0

2 years ago

A marker is 0.13 m long. What is the length in milliliters

yanalaym [24]

For this case we have:

Note:<em> Milliliter is a unit of volume. It is not possible to convert distance units into volume units. </em>

We must convert the length 0.13 meters to millimeters.

By definition, 1 meter equals 1000 millimeters. That is to say:

$1m = 1000mm$

Then, applying the rule of three we have:

1m ------------> 1000mm

0.13m --------> x

Where x represents the length of the marker in millimeters.

Resolving:

$x = \frac {(0.13 * 1000)} {1}$

$x = \frac {130} {1}\\x = 130$

Thus, the marker measures 130 millimeters long

Answer:

130 millimeters

4 0

3 years ago

A call center data set shows that in a sample of 30 individuals, 11 had prior call center experience. If we assume that the pro

ira [324]

Answer:

P(X > 5) = 0.1164 to 4 d.p.

The parameters are defined in the explanation.

Step-by-step explanation:

This is a binomial distribution problem

Binomial distribution function is represented by

P(X = x) = ⁿCₓ pˣ qⁿ⁻ˣ

n = total number of sample spaces = number of potential hires = 10

x = Number of successes required = number of potential hires that have prior call centre experience = more than half; that is, x > 5

p = probability of success = probability that any potential hire will have experience = (11/30) = 0.367

q = probability of failure = probability that any potential hire will NOT have experience = 1 - p = 1 - 0.367 = 0.633

P(X > 5) = P(X=6) + P(X=7) + P(X=8) + P(X=9) + P(X=10)

Inserting the parameters and computing the probabilities for each of those values of X,

P(X > 5) = 0.11641775484 = 0.1164 to 4 d.p.

Hope this Helps!!!

4 0

2 years ago

As Juan continued his hitting practice showing off his abilities, one of the balls flew over the center field stands and into th

WARRIOR [948]

Answer:

A. Find h(10) = 0 . . . (it is not)

B. h(5.235) = 0; hang time was about 5.235 seconds

Step-by-step explanation:

The hang time of the ball is the value of x in h(x) such that h(x) = 0.

Juan can show the hang time is 10 seconds by finding h(10) = 0. The value of h(10) is ...

h(10) = -16(10²) +83(10) +4 = -1600 +834 = -766 ≠ 0

Juan cannot prove the hang time was 10 seconds.

The hang time is the solution to ...

h(x) = 0

-16x² +83x +4 = 0 . . . . . use the given expression for h(x)

x² -5.1875x = 0.25 . . . . divide by -16

x² -5.1875x +6.7275390625 = 6.9775390625 . . . . add (5.1875/2)²

(x -2.59375)² = 6.9775390625 . . . . . . . . . . rewrite as a square

x = 2.59375 ±√6.9775390625 ≈ {-0.048, 5.235} . . . . square root, find x

The hang time of the ball was about 5.235 seconds.

We like a graphing calculator for finding a quick solution to questions like this.

4 0

2 years ago

Quick!! 30 points pls!

Ilia_Sergeevich [38]

Answer:

m∠WXY = 135°

Step-by-step explanation:

An Exterior Angle is the angle formed between a side and a line extended from the next side.

The Exterior Angle theorem says that an exterior angle's measure is the sum of its two remote interior angles (the two angles that are opposite of the angle).

In this example, ∠WXY is the exterior angle, and the remote interior angles are ∠Z and ∠Y.

So,

m∠WXY = m∠Z + m∠Y

m∠WXY = 73° + 62°

m∠WXY = 135°

4 0

2 years ago