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3 years ago

Please help! Question is below, and the answers to choose from are in next photo.

Mathematics

2 answers:

Nuetrik [128]3 years ago

8 0

You answer is 4 that is the answer some of us got

x

Bogdan [553]3 years ago

7 0

I can't see the next photo but I'm assuming that's what you're asking

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If 11250 = m(600) + b and 7650 = m(400) + b, how do I find the values of b and m? I forgot how to compare when I have two differ

Lelu [443]

Answer:

$b=450$ and $m=18$

Step-by-step explanation:

This exercise is an example of linear system equations. A system of linear equations is a set of (linear) equations that have more than one unknown. The unknowns appear in several of the equations, but not necessarily in all of them. What these equations do is relate the unknowns to each other.

The easy way to solve this problem is by using the reduction method.The reduction method consists of operating between the equations, such as adding or subtracting both equations, so that one of the unknowns disappears. Thus, we obtain an equation with a single unknown.

Ordering the equations as a system equations.

$\left \{ {{600m+b=11250} \atop {400m+b=7650}} \right.$

Using the reduction method, let's substract the second equation with the first equation, in order to clear m.

600m + b = 11250

-400m - b = -7650

200m = 3600 --------> m = 3600/200 -----> m = 18

We can substitute the value of m in any of the two equations to obtain the unknow b.

Let's substitute the value of m in the second equation.

400(18) + b = 7650

7200 + b = 7650 -----> b = 7650 - 7200 -------> b = 450

We can check this values in both equations.

600m + b = 11250 -----> 600(18) + 450 = 11250

400m + b = 7650 -----> 400(18) + 450 = 7650

Satisfying the result of both equations.

6 0

3 years ago

Xyz is translated 4 units up and 3 units left to yield xyz.what is the distance between any two corresponding points on xyz and

vagabundo [1.1K]

This would be ( using the Pythagoras theorem) = sqrt (3^2 + 4^2) = sqrt 25

= 5 units (answer).

4 0

3 years ago

Identify the lower class limits, upper class limits, class width, class midpoints, and class boundaries for the given freque

bezimeni [28]

Answer:

See explanation and results below.

Step-by-step explanation:

We have the following data:

Age (yr) when award was won Frequency 25-34 31 35-44 36 45-54 12 55-64 4 65-74 6 75-84 1 85-94 2

If we order the data we got the following result. We assume that the midpoint is given by:

$Midpoint= \frac{L.Limit +U.Limit}{2}$

The $Class.Width = U.Limit-L.Limit$

And the limits are given by the lower and upper limit.

L.Limit U.Limit Class W Midpoint Frequency Limits

25 34 34-25=9 29.5 31 [25-34]

35 44 44-35=9 39.5 36 [35-44]

45 54 54-45=9 49.5 12 [45-54]

55 64 64-55=9 59.5 4 [55-64]

65 74 74-65=9 69.5 6 [65-74]

75 84 84-75=9 79.5 1 [75-84]

85 94 94-85=9 89.5 2 [85-94]

8 0

3 years ago

What is the slope of the line that goes through the points (1,-5) and (4,1)

dem82 [27]

Answer:

D. 2

Step-by-step explanation:

So you use the formula with is $\frac{y_{1}-y_{2}}{x_{1}-x_{2}}$ . so you get (1 - -5)/(4-1). this gets you to 6/3 and you get 2

5 0

3 years ago

Can i get some help with these 2 problems

denis-greek [22]

I hope this helps you

8 0

3 years ago