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3 years ago

Dont comment under here if you and just commenting for points.. i really need to pass this:(

Mathematics

1 answer:

Scilla [17]3 years ago

4 0

Answer:

the y intercept is -9/2 or -4 1/2

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A combination of numbers and operations is called formula: true or false?

FinnZ [79.3K]

Answer:

true

Step-by-step explanation:

its actually false

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3 years ago

What is 50 x 79 x 27 + 69

vova2212 [387]

106,719

Answer:

$50 \times 79 \times 27 + 69 \\ \\ = 106,650 + 69 \\ \\ = 106,719$

8 0

2 years ago

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A circle has an area of 3.14 cm^2 . What is its radius?

Anni [7]

Answer:

Cant be determined

Step-by-step explanation:

You would need the diameter to figure this out

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3 years ago

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Find the missing lengths: LK=15 and KH=9, find KI and HI.

Luda [366]

Answer:

KI=11.25 and HI=6.75

Step-by-step explanation:

Consider the below figure attached with this question.

According to Pythagoras Theorem:

$base^2+perpendicular^2=hypotenuse^2$

Use Pythagoras in triangle HKL

$LH^2+KH^2=LK^2$

$(LH)^2+9^2=15^2$

$(LH)^2+81=225$

$(LH)^2=144$

Taking square root on both sides.

$LH=12$

Let length of HI be x.

LI = 12+x

Use Pythagoras theorem in ΔKLI,

$(KI)^2+15^2=(12+x)^2$

$(KI)^2+225=x^2+24x+144$

$(KI)^2=x^2+24x+144-225$

$(KI)^2=x^2+24x-81...(1)$

Use Pythagoras theorem in ΔHKI,

$(KI)^2=x^2+9^2$

$(KI)^2=x^2+81...(2)$

From (1) and (2) we get

$x^2+81=x^2+24x-81$

$24x=162$

$x=\dfrac{162}{24}=6.75$

Hence, the measure of HI is 6.75 units.

Substitute x=6.75 in equation (2).

$(KI)^2=(6.75)^2+81$

$(KI)^2=126.5625$

Taking square root on both sides.

$KI=\sqrt{126.5625}$

$KI=11.25$

Hence, the measure of KI is 11.25 units.

3 0

3 years ago

Please help.<br> Is algebra.

Airida [17]

Answer:

i believe

the first one it's (0,3)

the second is (4, -7)

3 0

2 years ago