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MArishka [77]
3 years ago
9

b) Your sister says that the angles ∠DCA and ∠BCA are supplementary angles. Is she correct? Explain your reasoning. (1 point)

Mathematics
2 answers:
Oksi-84 [34.3K]3 years ago
8 0

Answer:

incorrect

Step-by-step explanation:

pickupchik [31]3 years ago
6 0

Answer:

She is incorrect.

Step-by-step explanation:

ABCD is a quadrilateral. Angle C measures less than 180 degrees. The sum of the measures of two supplementary angles equals 180 degrees. The sum of the measures of angles DCA and BCA equals the measure of angle C, but angle C measures less than 180 degrees, so the angles are not supplementary.

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Step-by-step explanation:

multiply by 64 and then subtract by 47

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3 years ago
What is the slope of a line that passes through (0,5) and (-3,-4)
Marina86 [1]

Answer:

slope = 3

Step-by-step explanation:

Calculate the slope m using the slope formula

m = \frac{y_{2}-y_{1}  }{x_{2}-x_{1}  }

with (x₁, y₁ ) = (0, 5) and (x₂, y₂ ) = (- 3, - 4)

m = \frac{-4-5}{-3-0} = \frac{-9}{-3} = 3

8 0
3 years ago
URGENT PLEASE HELP!!!!!
telo118 [61]

(1)

we are given

\frac{y}{6} =x

we can  find for y

multiply both sides by 6

\frac{y}{6}*6 =6*x

y=6x

we can see that y is directly proportional to x

so, option-D........Answer

(2)

y varies inversely with x

so, we can write it as

y=k\frac{1}{x}

now, we are given

y=5 when x=2.5

so, we can plug it here

5=k\frac{1}{2.5}

and then we can solve for k

5*2.5=2.5*k\frac{1}{2.5}

k=12.5

now, we can plug back

y=\frac{12.5}{x}

we can plug x=20

y=\frac{12.5}{20}

y=0.625.............Answer

(3)

we are given

The current, I, in a circuit varies inversely with the resistance, R

so, we can write it as

I=\frac{k}{R}

we have R=12 when I=3

so, we can plug it

3=\frac{k}{12}

now, we can solve for k

3*12=12*\frac{k}{12}

k=36

now, we can plug back

I=\frac{36}{R}

we can plug R=6

I=\frac{36}{6}

I=6................Answer


6 0
3 years ago
jack spends 1 1/3 as long on his homework as Jill. Last week Jill sent 5 1/2 hours doing homework. How long did jack spenkd doin
katen-ka-za [31]
Jill = x
Jack = x + 1 1/3
X    =    5 1/2

Solving Equations
5 1/2 +1 1/3
 =6 5/6

Answer = 6 5/6 hours


8 0
4 years ago
Find the value of x. Round the length to the nearest tenth.
Irina-Kira [14]

Answer:

6 m

Step-by-step explanation:

sin22 = x/16\\x = 16sin22\\x = 6

8 0
2 years ago
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