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3 years ago

What is the coefficient of b in the expression b + 10? Explain.

Mathematics

1 answer:

hodyreva [135]3 years ago

8 0

Answer:

Step-by-step explanation:

as b have no number given it means. its coefficent is 1

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I need help with this please

zaharov [31]

Used a calculator and it came out as 60.962963

4 0

3 years ago

A long distance phone call between two cities costs $8.50 for 17 minutes. What is the rate in cents per minute?

Ira Lisetskai [31]

Answer:

.50 cents per minute

Step-by-step explanation:

8.50 divided by 17= 0.50

to check- 0.50 times 17 equals 8.50

3 0

3 years ago

A circular mirror is surrounded by a square metal frame the radius of the mirror is 2X the side length of the metal frame is 6X

vovangra [49]

Answer:

Area of the metal frame is $23.43x^2$ .

Step-by-step explanation:

Given:

Radius of circular mirror = $2x$

Side length of the metal frame = $6x$

We need to find the area of the metal frame.

Solution:

First we will find the area of the whole thing.

area of the whole thing is in square shape we can say that;

area of the whole thing is equal to square of the length of the metal frame.

framing in equation form we get;

area of the whole thing = $(6x)^2 = 36x^2$

Now we will find the area of the circular mirror.

Since mirror is in circular form we will use area of the circle.

So area of circular mirror is equal to π times square of the radius.

framing in equation form we get;

area of the circular mirror = $\pi r^2 = \pi(2x)^2 = \pi 4x^2 = 12.57x^2$

Now to find the area of the metal frame surrounded my the mirror we will subtract area of the circular mirror from area of the whole thing.

framing in equation form we get;

area of the metal frame = $36x^2-12.57x^2 = 23.43x^2$

Hence Area of the metal frame is $23.43x^2$ .

6 0

2 years ago

Read 2 more answers

Use the graph to write a linear function that relates y to x.

sergeinik [125]

The basic structure of a linear function is y=mx+b (or +c, depending on your schools curriculum)

We need to find the slope (m), and the y-intercept (b/c)

To find the slope you can pick two random points, say (2,2) and (0,1)

The formula for the slope is this: m= y1-y2 / x1-x2

So if we substitute the points in, we get 2-1 / 2-0 = 1/2

Knowing the slope, it can be substituted into to the equation: y=1/2x + b

Then, if you notice the second point- (0,1), it’s the y-intercept. The y coordinate there is 1.

To check if this is correct, a random coordinate set can be picked and substituted in to find b.

y= 1/2x + b
2 = 1/2 *2 + b
2 = 1 + b
2-1=b
1=b

Therefore, the final linear function is y = 1/2 x + 1

3 0

3 years ago

Find the value of x - 5x+4 + 8x-71

12345 [234]

Let's simplify step-by-step.

x−5x+4+8x−71

=x+−5x+4+8x+−71

Combine Like Terms:

=x+−5x+4+8x+−71

=(x+−5x+8x)+(4+−71)

=4x+−67

Answer:

=4x−67

4 0

2 years ago

Read 2 more answers