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2 years ago

...........help......

Mathematics

1 answer:

maw [93]2 years ago

4 0

Answer: angle ADC measures half of 124 that is 62 degrees

Step-by-step explanation:

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find the length, width, area, and perimeter of a rectangle where the length is 5 units more than the width and the perimeter is

skad [1K]

Step-by-step explanation:

L= W+5

P= 9W

P= 2L+ 2W

9W= 2(W+5) + 2W

9W= 2W +10 +2W

9W = 4W +10

5W = 10

W = 2

L=7

P= 9(2)

P= 18

A= LW

A= 7 x 2

A= 14

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3 years ago

Lisa pays $1339.70 quarterly on her property taxes, what is her monthly payment?

Serga [27]

Every quarter is 3 months so you must divide 1339.70 by 3 to get her monthly payment of about $446.57.

Hope this helps :3

7 0

3 years ago

What is the percentage of 48g of fat out of a 70g allowance

Elenna [48]

48/70=0.6857
0.6857x100=68.57%

5 0

3 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

A middle school took all of its 6th grade students on a field trip to see a ballet at a theater that has 2900 seats. The student

lesantik [10]

Answer:

34%

Step-by-step explanation:

To find what percent a part is of the whole, divide the part by the whole and multiply by 100%.

$\dfrac{986}{2900} \times 100\% = 0.34 \times 100\% = 34\%$

5 0

2 years ago

Read 2 more answers