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3 years ago

Can you help please?

Mathematics

1 answer:

8_murik_8 [283]3 years ago

5 0

Answer:

1. x = 0

2. x = -5

3. x = 25

4. y = 16

I hope this helped you!!!!

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A die is loaded in such a way that the probability of each face turning up is proportional to the number of dots on that face. (

Nina [5.8K]

Answer:

simple, divide the number by two, round as needed. 6=3x as normal, 5=2.5x as nromal, etc.

Step-by-step explanation:

6 0

3 years ago

Three hundred people were surveyed about their favorite ride at an amusement park. The results of the survey are shown in the gr

faltersainse [42]

Hello, since 18% of the people surveyed chose Ferris Wheel as their favorite ride at an amusement park, we simply need to get 18% of 300.

$300*0.18=54$

ANSWER: A. 54 people chose Ferris Wheel as their favorite ride.

5 0

3 years ago

Two cars leave Denver at the same time and travel in opposite directions. One car travels 10 mi/h faster than the other car. The

mestny [16]

Recall your d = rt, distance = rate * time

let's say we have two cars, A and B, B has a speed rate of "r", so A is the faster one and has a speed rate of " r + 10 "

they both are 300 miles apart after 3hrs, after 3hrs, car has been running for 3hrs, and car B has also been running for 3hrs, so their time is the same

we know their distances added up, is 300miles, so if car B covered say, "d" distance on those 3hrs, car A covered the slack, " 300 - d "

$\bf \begin{array}{lccclll}
&distance&rate&time\\
&-----&-----&-----\\
\textit{car A}&300-d&r+10&3\\
\textit{car B}&d&r&3
\end{array}\\\\
-------------------------------\\\\
\begin{cases}
300-d=(r+10)3\\
\boxed{d}=3r\\
----------\\
300-\boxed{3r}=3(r+10)
\end{cases}$

solve for "r"

8 0

4 years ago

The base of a solid oblique pyramid is an equilateral triangle with an edge length of s units. Which expression represents the h

aev [14]

Answer:

The height of the triangular base of the pyramid is s√3/2 units

Step-by-step explanation:

Here in this question, what we are concerned with is to calculate the height of the equilateral-triangle base of the oblique pyramid.

From the question, we are told that the equilateral triangle has a length of a units.

Let’s have a recall on some of the properties of equilateral triangles;

a. All sides are of equal lengths. Meaning side s is the length of all the sides in this case.

b. All angles are equal, meaning they are 60 degree each.

c. Dropping a perpendicular line from the top vertex to the base length will split the equilateral triangle into two right-angled triangles of angles 60 and 30 each.

So to find the height of this triangular base, we can use any of the two right angled triangles.

Kindly recall that the properties of each would be angles 30, 60 and side length s

so to calculate the height h, we can use trigonometric identities

Mathematically, the trigonometric identity we can use is the sine( side length s represents the hypotenuse, while the height h represents the opposite facing the angle 60 degrees)

Thus; we have

Sine of an angle = length of the opposite/length of hypotenuse

sin 60 = h/s

h = s sin 60

In surd form,

sin 60 = √3/2

Thus;

h = s * √3/2 = s√3/2 units

3 0

4 years ago

Choose correct answers

xeze [42]

Nothing are there need more

4 0

3 years ago