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3 years ago

How do yo solve linear equations

1 answer:

6 0

Well, my math teacher told me to use the formula y=mx+b with +b being your y-intercept, mx being your constant or slope, and y= being your answer.EX: Sam is a babysitter who charges a fee of $15 and $5 per hour, how much would she get if she worked for 2 hours.+b would be 15 and m would be 5 and x is 2 and if you solve it would be $25.

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A geometry class is asked to find the equation of a line that is parallel to y – 3 = −(x + 1) and passes through (4, 2). Trish s

Mrac [35]

The students are correct because if they are parallel they need to have the same slope they all have the same slope.

7 0

3 years ago

Find the perimeter of triangle ABC.

qaws [65]

Answer:

21.79 units

Step-by-step explanation:

We have to use the distance formula, which says that for two points (x_1, y_1) and (x_2, y_2), the distance between them is: $\sqrt{(x_1-x_2)^2+(y_1-y_2)^2}$

First up is (2, 2) and (6, 6): $\sqrt{(2-6)^2+(2-6)^2}=\sqrt{(-4)^2+(-4)^2}=\sqrt{16+16}=\sqrt{32} =4\sqrt{2}$ ≈ 5.66

Next is (6, 6) and (7, -3):

$\sqrt{(7-6)^2+(-3-6)^2}=\sqrt{(1)^2+(-9)^2}=\sqrt{1+81}=\sqrt{82}$ ≈ 9.06

Finally is (2, 2) and (7, -3):

$\sqrt{(2-7)^2+(2-(-3))^2}=\sqrt{(-5)^2+(5)^2}=\sqrt{25+25}=\sqrt{50} =5\sqrt{2}$ ≈ 7.07

Add these up:

5.66 + 9.06 + 7.07 = 21.79 units

Hope this helps!

4 0

4 years ago

Find the equation of the line that is parallel to the given line and passes through the given point y=3x+1 point (-1, -4)

Yanka [14]

Answer:

y+4=3(x+1) - this equation is in point-slope form. The equation in slope-intercept form is y=3x-1.

Step-by-step explanation:

Since the line is parallel, the slope is the exact same. Since we have the info of the slope and a point on the line, the most obvious choice would be to put in point-slope form, which is y+4=3(x+1). Now, if the equation is needed in slope -intercept form, you can use algebraic processes to convert. First, I would distribute the 3 into the expression in the parenthesis( multiply everything in the expression by 3), which would make the equation y+4=3x+3. Then, I would subtract 4 from both sides of the equation to isolate the y variable, which would give me y=3x-1. Now, the equation is in slope-intercept form.

7 0

3 years ago

In response to the increasing weight of airline passengers, the Federal Aviation Administration in 2003 told airlines to assume

solong [7]

Answer:

the approximate probability that the total weight of the passengers exceeds 4668 pounds is 0.0089

Step-by-step explanation:

Using the central limit Theorem

z = (x - u )/Q÷ sqrt n

Where z is the z-score

x is the average weight = 4668/22 = 212.2

u is the passengers average = 194 pounds

Q is standard deviation = 36 pounds

Therefore

z= (212.2 - 194) / 36 ÷ sqrt22

= 18.2/ 36÷ 4.69

= 18.2/7.68

z=2.3698 aprx 2.37

Find the value of 2.37 z-score on the z-table to determine the approximate probability

P(z>2.37) = 0.0089 (from the z-table)

6 0

3 years ago

Read 2 more answers

Skeeter the wonder dog jumps through circular rings as part of his dog show exhibition.skeeter requires a width of 18inches for

Ivahew [28]

No bc the width of the circular ring is only 12.67 inches

knowing circumference = pi * diameter, we can make the formula:

39.8 = (3.14)(diameter)
divide 39.8 by 3.15

diameter = 12.67 inches

12.67 inches is not greater than or equal to 18 inches

8 0

4 years ago