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ipn [44]
3 years ago
15

Is (1, 2) a solution to this system of equations? 10x + 4y = 18 x + 9y = 19

Mathematics
1 answer:
Arlecino [84]3 years ago
3 0

Answer:

Yes

Step-by-step explanation:

The intersection point of 10x+4y=18 and x+9y=19 is (1,2) on a graph.

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HELP PLEASE I NEED HELP WITH THIS PROBLEM !!!!!!
scZoUnD [109]
Less than or equal to   first equation (solid line)

less tha second equation ( the dotted line)


so its d



3 0
3 years ago
Please Help Me With These Problems!!
galben [10]

The area painted red on one of the front wheels on DeMarius’ car will be 80.42 inches².

<h3>How to calculate the area?</h3>

From the information given, the The front wheels on DeMarius’ car are divided into sectors of equal area and the radius of each wheel is 8 inches. The area will be:

= 2/5 × πr²

= 0.4 × 3.14 × 8²

= 80.42 inches²

The radius, in feet, of a rear wheel on the car will be:

r1(2π) = r2(2π)

8(2π) = r2(8/5)(2π)

16 = r2(8/5)

r = 5/8 × 16

r = 10 inches

r = (5/6) feet

Learn more about area on:

brainly.com/question/25292087

#SPJ1

4 0
2 years ago
the zeros of a parabola are -4 and 2, and (6, 10) is a point on the graph. which equation can be solved to determine the value o
natka813 [3]
Sure this question comes with a set of answer choices.

Anyhow, I can help you by determining one equation that can be solved to determine the value of a in the equation.

Since, the two zeros are - 4 and 2, you know that the equation can be factored as the product of (x + 4) and ( x - 2) times a constant.  This is, the equation has the form:

y = a(x + 4)(x - 2)

Now, since the point (6,10) belongs to the parabola, you can replace those coordintates to get:

10 = a (6 + 4) (6 - 2)

Therefore, any of these equivalent equations can be solved to determine the value of a:

10 = a 6 + 40) (6 -2)

10 = a (10)(4)

10 = 40a
7 0
3 years ago
Read 2 more answers
1. In the file MajorSalary.xlsx, data have been collected from 111 College of Business graduates on their monthly starting salar
lara31 [8.8K]

Solution :

a.The table below shows the different distribution of the students in differnt majors :

Subjects        No. of graduates

Accounting          28

Finance               21

Management       24

Info System         16

Marketing            22

Therefore, "accounting" have the maximum number of graduates.

b. The average monthly salaries of the graduates from some of the different majors are :

Subjects                    Average salary                Overall salary

Finance                          699                                 77595

Accounting                    1014                               112560

Info Sys                          577                                 64000

Marketing                        663                                 73590

Management                  688                                  76320

Therefore, the "Accounting" group have the highest average salary.

c. The "info System" has the lowest overall salary.

2.b. The data showing is more or less the linear relationship between the "Annual Expenses" and the "Weekly usage", therefore initially, we fit the linear regression equation of the form.

$AE = a+b \times(WU)$

The ordinary least square estimates are $\hat{a} = 10.528 \text{ and} \ \hat{b} = 0.9534

So, $AE = 10.528+0.9534 \times(WU)$

c. The amount of the variation the estimated model explains for the entire variation is given by the measure of

$R^2 = \frac{\text{variance of fitted observation}}{\text{variance in original data}}$

    = 0.856

It shows the linear regression that explains the good amount of entire variability of the annual expenses. It also supports the assumption of the "Linear Model".

a. The Scatter plot is attached below.

3 0
3 years ago
Can someone help me find the diameter of the copper ball ty
Vladimir [108]

Answer:

The answer is 346.185 if its diameter is 22.

5 0
3 years ago
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