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3 years ago

How much can 2 go into 80

Mathematics

1 answer:

iren [92.7K]3 years ago

8 0

Answer:

Step-by-step explanation:

80/2= 40

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consider the line 4x+9y=-8find the equation of the line that is perpendicular to this line and passes through the point (-2, -2)

levacccp [35]

$\begin{gathered} \text{The equation of the line is,} \\ 4x+9y=-8 \\ 9y=-4x-8 \\ y=-\frac{4}{9}x-\frac{8}{9} \\ \text{The slope is}\Rightarrow m=-\frac{4}{9} \\ perpendicular\text{ slope}\Rightarrow m^{\prime}=\frac{9}{4} \\ 1. \\ x_1=-2,y_1=-2 \\ So,\text{ the perpendicular equation of line is} \\ y-y_1=m^{\prime}(x-x_1) \\ y+2=\frac{9}{4}(x+2) \\ 4y+8=9x+18 \\ 4y=9x+10 \\ y=\frac{9}{4}x+\frac{5}{2}(\text{Ans)} \\ 2. \\ The\text{ parallel equation is,} \\ y-y_1=m(x-x_1) \\ y+2=-\frac{4}{9}(x+2) \\ 9y+18=-4x-8 \\ 9y=-4x-26 \\ y=-\frac{4}{9}x-\frac{26}{9}(\text{Ans)} \end{gathered}$

8 0

1 year ago

The cost of putting in automatic sprinklers for a lawn largely depends upon the length of Poole that must be laid. The controlle

OLga [1]

Answer:

$c(F) = 135 + 2.5F$

Step-by-step explanation:

We are given the following in the question:

Controller cost = $135

System cost = $2.50 per foot of pipeline

The total cost depends upon the length of Pole.

Let the system requires F feet of pipeline.

Total cost will be given by the equation:

$c(F) = \text{Controller cost + System cost(Feet of pipeline required)}\\c(F) = 135 + 2.5F$

is the required expression for total cost

F: feet of pipeline required

c(F): Total cost of installation

5 0

3 years ago

Please help me with this geometry question:((

Fudgin [204]

Answer:

x = 13

RQ = 160°

Step-by-step explanation:

Inscribed angles are half the intercepted arc angle.

5x + 15 = ½ (RQ)

RQ = 10x + 30

Arc angles add up to 360°.

10x + 30 + 9x + 17 + 6x − 12 = 360

25x + 35 = 360

25x = 325

x = 13

Therefore, RQ = 160°.

7 0

3 years ago

Read 2 more answers

How to graph a line?

djverab [1.8K]

Answer:

plot a point on the y-axis. ...

Look at the numerator of the slope. ...

Look at the denominator of the slope. ...

Plot your point.

Repeat the above steps from your second point to plot a third point if you wish.

Draw a straight line through your points.

Step-by-step explanation:

3 0

3 years ago

Which angle corresponds to

Alexus [3.1K]

Answer:

∡GFB

Step-by-step explanation:

∡GFB and ∡HGD are corresponding angles

3 0

3 years ago

Read 2 more answers