All categories

3 years ago

"David is three years older than Jim. Tom is 5 years yunger than Jim. The sum

Mathematics

1 answer:

borishaifa [10]3 years ago

8 0

Answer:

what are you saying

Step-by-step explanation:

this question is not correct

You might be interested in

Simplify (sec θ – tan θ)2

rusak2 [61]

Answer:

2 sec (θ ) − 2 tan ( θ )

Step-by-step explanation:

4 0

3 years ago

Need help ASAP giving 30 points

FrozenT [24]

Answer:

Find the radius

Square the radius

Multiply by pi

Round to nearest hundredth

5 0

3 years ago

Choose the correct solution and graph for the inequality -5y<_-15

riadik2000 [5.3K]

-5y <= -15

divide by -5 (flips the inequality)

y >= 3

closed circle at 3 line to the right

7 0

2 years ago

Which correctly describes a cross section of the right rectangular prism if the base is a rectangle measuring 15 inches by 8 inc

weeeeeb [17]

Answer: 2,3, and the last one.... I think

Step-by-step explanation:

7 0

2 years ago

Lines 3x-2y+7=0 and 6x+ay-18=0 is perpendicular. What is the value of a?

BlackZzzverrR [31]

Answer:

$\boxed{\sf a = 9 }$

Step-by-step explanation:

Two lines are given to us which are perpendicular to each other and we need to find out the value of a . The given equations are ,

$\sf\longrightarrow 3x - 2y +7=0$

$\sf\longrightarrow 6x +ay -18 = 0$

Step 1 : Convert the equations in slope intercept form of the line .

$\sf\longrightarrow y = \dfrac{3x}{2} +\dfrac{ 7 }{2}$

and ,

$\sf\longrightarrow y = -\dfrac{6x }{a}+\dfrac{18}{a}$

Step 2: Find the slope of the lines :-

Now we know that the product of slope of two perpendicular lines is -1. Therefore , from Slope Intercept Form of the line we can say that the slope of first line is ,

$\sf\longrightarrow Slope_1 = \dfrac{3}{2}$

And the slope of the second line is ,

$\sf\longrightarrow Slope_2 =\dfrac{-6}{a}$

Step 3: Multiply the slopes :-

$\sf\longrightarrow \dfrac{3}{2}\times \dfrac{-6}{a}= -1$

Multiply ,

$\sf\longrightarrow \dfrac{-9}{a}= -1$

Multiply both sides by a ,

$\sf\longrightarrow (-1)a = -9$

Divide both sides by -1 ,

$\sf\longrightarrow \boxed{\blue{\sf a = 9 }}$

Hence the value of a is 9 .

8 0

2 years ago