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Svetlanka [38]
2 years ago
9

How can you use fractions to place the decimal in the product?

Mathematics
1 answer:
Oxana [17]2 years ago
6 0

Answer:

it is easier to multiply first and then to place the decimal point. Multiply the factors as if they were whole numbers. Disregard the decimal point until you place it in the product.

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Find the value of the expression
sashaice [31]

Answer:

20

Step-by-step explanation:

t=1

u=2

t+8+u+8+1=1+8+2+8+1=20

8 0
2 years ago
The admission to a local carnival is $6.50 per person and $2.50 for each ride. Jenna wants to know much it will cost her to ride
IrinaK [193]
6.50 + 2.50r = t

6.50 is being paid only once, while she pays 2.50 for each ride, or r. t is the total cost of the two when added together.
6 0
2 years ago
Read 2 more answers
Find all solutions of cos x -sqrt = 0.
valina [46]

Answer:

Option A

Step-by-step explanation:

Good question!

We assume that x lies on the interval 0<=x<=360. We can therefore identify the solution in degrees:

\cos \left(x\right)-\sqrt{1-3\cos ^2\left(x\right)}=0,\:0\le \:x\le \:360^{\circ \:}

Now we can solve by substitution, and when simplified we get cos(x) = 1/2.

Take the inverse: x = cos^-1(1/2) = π/3 <--- angle in first quadrant

                             x = (2π-π/3) = 5π/3 <----- angle in fourth quadrant

As you know π/3 in degrees is 60, and 5π/3 = 360-60 = 300

Therefore your solution is the first option, x = 60+n360 and x = 300 + n360

6 0
2 years ago
Write an equation in slope intercept form that represents the line shown​
Tomtit [17]

Answer:

y - 2 = -\frac{1}{3}(x + 3)

Step-by-step explanation:

The equation of a line, in slope-intercept is given by:

y - y_0 = m(x - x_0)

In which (x_0,y_0) is a point in the line and m is the slope.

We have these following points:

(-3,2), (0,1)

I am going to use (x_0,y_0) = (-3,2)

So

y - 2 = m(x - (-3))

y - 2 = m(x + 3)

Finding the slope

The slope, given two points, is given by the change in y divided by the change in x. In this question:

Points (-3,2) and (0,1).

Change in y: 1 - 2 = -1

Change in x: 0 - (-3) = 0 + 3 = 3

So

m = \frac{-1}{3} = -\frac{1}{3}

So the equation of the line is:

y - 2 = -\frac{1}{3}(x + 3)

6 0
2 years ago
A Line passes through the point (-1,-2) and is perpendicular to the line with the equation y= -x - 1 what’s the equation of the
Allisa [31]

Answer:

y = x - 1

Step-by-step explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

y = - x - 1 ← is in slope- intercept form

with slope m = - 1

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{-1} = 1, thus

y = x + c ← is the partial equation of the perpendicular line

To find c substitute (- 1, - 2) into the partial equation

- 2 = - 1 + c ⇒ c = - 2 + 1 = - 1

y = x - 1 ← equation of perpendicular line

7 0
3 years ago
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