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Leya [2.2K]
3 years ago
11

I just need help with problems 15 to 20 Please help

Mathematics
1 answer:
Andreas93 [3]3 years ago
3 0
73.5/5 because the middle number of four and three is 3.5 <span />
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Which of these is a point-slope equation of the line that is perpendicular to
stellarik [79]

Answer:

D

Step-by-step explanation:

The equation of a line in point- slope form is

y - b = m(x - a)

where m is the slope and (a, b) a point on the line

y - 3 = 4(x - 10) ← is in point- slope form

with slope m = 4

Given a line with slope m then the slope of a line perpendicular to it is

m_{perpendicular} = - \frac{1}{m} = - \frac{1}{4}

The perpendicular line passes through (- 3, 7), hence

y - 7 = - \frac{1}{4}(x - (- 3)), that is

y - 7 = - \frac{1}{4}(x + 3) → D

5 0
2 years ago
Use the drop-down menus to complete each equation so the statement about its solution is true.
aleksklad [387]

First, let's simplify the expression: 7 - 5 + 3x - 1  ⇒   3x + 1  <em>(slope=3, y-intercept = 1)</em>

Next, let's understand what they are asking for:

<u>no solutions</u> means same slope but different y-intercepts

Answer: 3x + _______ (the blank can be anything except 1)

<u>one solution</u> means different slopes

Answer: ________x + _______ (the first blank can be anything except 3, the second blank can be anything)

<u>infinitely many solutions</u> means same slope and same y-intercept

Answer: 3x + 1

3 0
3 years ago
Read 2 more answers
Can someone help me solve these four problems.
masya89 [10]
I only know 9.

V = 1
5 0
2 years ago
Read 2 more answers
Subtract 8 feet from 9 yards, 1 foot
Advocard [28]

Answer:

20 feet

Step-by-step explanation:

There are 3 feet in a yard, so 9 yards and 1 foot = 28 feet. You find this by multiplying 9x3 = 27 and adding the extra foot, which makes it 28. To find the final answer just subtract 8 from 28, which gives you 20.

4 0
3 years ago
The shaded region in the graph represents the solutions of this system of linear inequalities:
kotegsom [21]

Answer:

y

y\leq 2x+3

Step-by-step explanation:

step 1

Find the equation of the solid line

From the graph take the points (0,3) and (4,11)

Find the slope

m=(11-3)/(4-0)\\m=8/4=2

The equation of the solid line in slope intercept form is equal to

y=mx+b

we have

m=2

b=3 ----> the y-intercept is the point (0,3)

substitute

y=2x+3

therefore

The inequality is

y\leq 2x+3

step 2

Find the equation of the dashed line

The slope is given

m=4

From the graph take the y-intercept (0,-5)

The equation of the solid line in slope intercept form is equal to

y=mx+b    

we have

m=4

b=-5

substitute

y=4x-5

therefore

The inequality is

y

because the shaded region is below the dashed line

therefore

The system of inequalities is

y

y\leq 2x+3

8 0
3 years ago
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