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3 years ago

PLZ HELP I WILL GIVE THE BRAINIEST!!

Mathematics

1 answer:

Vlada [557]3 years ago

3 0

Answer:

6.4 ft

Step-by-step explanation:

the sine ratios in every triangle are

a/sin(A) = b/sin(B) = c/sin(C)

here now the names are changed.

j = a = 7 ft

m = b

k = c

J = A = 45 degrees

M = B = 40 degrees

K = C

we are trying to find m (= b) based on these numbers.

m/sin(40) = 7/sin(45)

m = 7 × sin(40)/sin(45) = 6.4 ft

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What are the terms in the expression?<br> a3 – 2ab + b

DanielleElmas [232]

Answer:

a^3, 2ab, b

Step-by-step explanation:

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In the expression given, $a^3, 2ab, b$ are the terms in the expression.

Hope this helps.

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3 years ago

A group of hikers walked 2 1/4 km in 3/4 hour.The distance here varies directly with time. What is the constant of variation?

telo118 [61]

The distance depends on the time.

So now we need to find the constant of variation or the constant of proportionality.

To do so we must find y(the dependent variable) and x(the independent variable).

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Since y/x=k

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4 years ago

Read 2 more answers

For 7 and 8, find the maximum or minimum point of the parabola

Leni [432]

Answer: 7) Max: y = 52

8) Min: y = -51

<u>Step-by-step explanation:</u>

The Max/Min is the y-value of the intercept.

Max is when the a-value is negative.
Min is when the a-value is positive.

First, find the x-value of the vertex using the Axis of Symmetry formula:

x = -b/2a. Then plug the x-value into the equation to find the y-value.

7) y = -2x² - 16x + 20

↓ ↓ ↓

a= -2 b= -16 c=20

$\text{AOS:}\quad x=\dfrac{-b}{2a}\quad =\dfrac{-(-16)}{2(-2)}\quad =\dfrac{16}{-4}\quad =-4$

Max: y = -2(-4)² - 16(-4) + 20

= -2(16) + 64 + 20

= -32 + 84

= 52

*********************************************************************************************

7) y = x² + 12x - 15

↓ ↓ ↓

a= 1 b= 12 c= -15

$\text{AOS:}\quad x=\dfrac{-b}{2a}\quad =\dfrac{-(12)}{2(1)}\quad =\dfrac{-12}{2}\quad =-6$

Max: y = (-6)² + 12(-6) - 15

= 36 - 72 - 15

= 36 - 87

= -51

8 0

3 years ago

What is equivalent 24 1/3

sertanlavr [38]

Answer:

241/3

Trying to find the cube root of 24

Factor 24

one of the factors should be a perfect cube and one will not

Of course you can also try cubing the choices given one of them will equal 24

Give it a try

I hope this helps

4 0

3 years ago

The hypotenuse of a right triangle is 89 meters long. One leg of the triangle is 39 meters long. What is the length of the other

Hitman42 [59]

A²+b²=c²
39²+b²=89²
1521+b²=7921
subtract 1521 from both sides
b²=6400
so then you square both sides
√6400
80

4 0

4 years ago