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3 years ago

18-4x=-2 two step equations

Mathematics

1 answer:

prisoha [69]3 years ago

6 0

Answer:

Step-by-step explanation:

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Solve for x. Show your work.

defon

First solve C
Then make 2 equations to use them
X=22.5

5 0

3 years ago

At the toy store you could get 2 board games for $8.36. Online the price for 3 board games is $12.84. Which place has the highes

777dan777 [17]

An online place has the highest price for a board game because it costs $4.28 and a store costs $4.18 for each game respectively.

<h3>What is a fraction?</h3>

Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.

From the data given:

At the toy store, you could get 2 board games for $8.36.

Each board game cost = 8.36/2 = $4.18

Online the price for 3 board games is $12.84.

Each board game costs = 12.84/3 = $4.28

4.28 > 4.18

Thus, an online place has the highest price for a board game because it costs $4.28 and a store costs $4.18 for each game respectively.

Learn more about the fraction here:

brainly.com/question/1301963

#SPJ1

8 0

1 year ago

Express 236.7 miles in 4.5 days as a unit rate

Andre45 [30]

The answer would be 52.6 miles per 1 day. Take 236.7 and divide it by 4.5.

6 0

4 years ago

Select the solid whose cross sections are dilations of some two-dimensional shape using a point directly above the shape as a ce

s2008m [1.1K]

Answer:

Cone

Step-by-step explanation:

Options:

a) Cone b) Cube c) Cylinder d) Triangular prism

From the given options (a) to (d), option (a) is true.

This is so, because.

The volume (V) of a cone is:

$V_1 = \frac{1}{3}\pi r^2h$

This is as a result of dilating the cylinder by 1/3 whose volume is:

$V_2 = \pi r^2h$

In other words:

$V_1 = \frac{1}{3}V_2$

<em>i.e. the cross-section of the cylinder (V2) being dilated by 1/3 (which is between 0 and 1) gives the cone (V1)</em>

6 0

3 years ago

For #36, why is the answer 4? Plz explain.

luda_lava [24]

I am getting 7 as the value of b. I do not believe 4 is a correct answer!

Here's why:

General equation of a circle in the xy plane

$(x-c_x)^2+(y-x_y)^2=r^2$

with $c_x\,\,\mbox{and}\,\,c_y$ being the x,y coordinates of the center.

The center point can be determined from the two endpoints of the diameter because the line segment is horizontal, so we just find the center of the x coordinates of the two points:

$c_x = -2+\frac{|8-(-2)|}{2}=3\\c_y = 3$

and the radius r = diameter/2 = 8-(-2)/2 = 5

so we have

$(x-3)^2+(y-3)^2=5^2$

Given a point on the circle (0,b) with b>0:

$(0-3)^2+(b-3)^2=5^2\\9+(b-3)^2 = 25\\(b-3)^2 = 16\\b=7$

6 0

3 years ago