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4 years ago

Which lines are parallel is m∠1 + m∠2 = 180? Justify your answer.

Mathematics

1 answer:

kipiarov [429]4 years ago

7 0

Step-by-step explanation:

i think the correct answer is j // k by the converse of the same side interior angles theorem

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- 100 points -

Molodets [167]

Answer:

Step-by-step explanation:

8 0

3 years ago

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susan englared a rectangle with a height of 3cm and length of 10cm on her computer. The length of the new rectangle is 15cm.Find

ExtremeBDS [4]

$\frac{3}{x} \times \frac{10}{15}$
when you cross multiply the answer is 4.5

8 0

4 years ago

Japhus Moore's credit card statement showed a previous balance of $921.07 , a financial charge of $13.80, new purchases of $962.

lara [203]

Answer:

$906.51

Step-by-step explanation:

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4 years ago

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tina bought three pairs of jeans and three sweaters that were on sale she paid a total of 105.69 if the jeans were 26.93 how muc

OLga [1]

Answer:

Each sweater costs $8.30

Step-by-step explanation:

j = jeans

s = sweater

3j + 3s = 105.69

3(26.93) + 3s = 105.69

80.79 + 3s = 105.69

-80.79 -80.79

3s = 24.9

/3 /3

s = 8.3 ($8.30)

Check:

3j + 3s = 105.69

3(26.93) + 3(8.3) = 105.69

80.79 + 24.9 = 105.69

105.69 = 105.69

Hope this helps!

4 0

2 years ago

1. Write a quadratic function, in standard form, that fits the set of points. Solve it as a system of three equations

sasho [114]

Answer:

The equation is $y=2x^2+4x-7$

Step-by-step explanation:

Let the quadratic function be

$y=ax^2+bx+c$

The point (-4,9) must satisfy this function,

$\Rightarrow a(-4)^2+b(-4)+c=9$

$\Rightarrow 16a-4b+c=9...(1)$

The point (0,-7) must also satisfy this function,

$\Rightarrow a(0)^2+b(0)+c=-7$

$\Rightarrow c=-7...(2)$

The point (1,-1) must also satisfy this function,

$\Rightarrow a(1)^2+b(1)+c=-1$

$\Rightarrow a+b+c=-1...(3)$

We put equation 2 into equation 1 to get;

$\Rightarrow 16a-4b-7=9$

$\Rightarrow 16a-4b=16$

$\Rightarrow 4a-b=4...(5)$

We again put equation 2 into equation 3 to get;

$\Rightarrow a+b-7=-1$

$\Rightarrow a+b=6...(6)$

We add equation 5 and 6 to get;

$5a=10$

$\Rightarrow a=2$

We put $a=2$ into equation 6 to get;

$2+b=6$

$\Rightarrow b=6-2$

$\Rightarrow b=4$

The equation is therefore $y=2x^2+4x-7$

5 0

3 years ago