3 years ago

PLEASE HELP RIGHT AWAY!!!!!

Mathematics

1 answer:

Cloud [144]3 years ago

4 0

Answer:

1) 46.6

Step-by-step explanation:

Given Data:

s1 of Triangle ABC= 4cm

s2 of Triangle ABC=6cm

s3 of Triangle ABC=8cm

As per the side-side-side SSS of a given triangle

the corresponding angles are found by the following law of cosine formula

cos A = (b2 + c2 − a2) / 2bc

Putting the values we get

cos A= (4^2+8^2-6^2)/2(4)(8)

cos A= (16+64-36)/64

A=cos^-0.6875

A=46.57!

You might be interested in

A carpenter wants to cut a 12-foot board into two pieces so that one piece is 2 times as long as the other. How long should each

kicyunya [14]

8 feet
So it would be 4 for the small piece

8 0

3 years ago

Write a equation of the lines passes through the given points (-2,7) (1,1) the equation is?

vredina [299]

The point-slope form:

$y-y_1=m(x-x_1)$

m - slope

(x₁, y₁) - point

The formula of a slope:

$m=\dfrac{y_2-y_1}{x_2-x_1}$

We have the points (-2, 7) and (1, 1). Substitute:

$m=\dfrac{1-7}{1-(-2)}=\dfrac{-6}{3}=-2$

$y-7=-2(x-(-2))\\\\\boxed{y-7=-2(x+2)}$ point-slope form

$\boxed{y=-2x+3}$ slope-intercept form

$\boxed{2x+y=3}$ standard form

7 0

3 years ago

What is the sum of −4x+1 and 6x−5 ? 10x + 6 2x−4 −2x+6 I don't know.

creativ13 [48]

2x-4

-4 + 6 is 2 so 2x
1 + -5 is -4

5 0

2 years ago

Read 2 more answers

A swimming pool is to be drained. The pool is shaped like a rectangular prism with length 30 ft, width 18 ft, and depth 4 ft. Su

Licemer1 [7]

Answer:

10 hours (I am not positive)

Step-by-step explanation:

We first want to find the volume of pool which is 30 x 18 x 4 = 2160.

Then you are going to divide by 216 to find how many hours it takes to drain the whole pool. (I'm not that big of an expert)

4 0

3 years ago

Question 1 of 40

Svetach [21]

Answer:

Step-by-step explanation:

Choose C. 2,2,5

semoga membantu

5 0

2 years ago