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3 years ago

7

Find the sine pls help

1 answer:

Nat2105 [25]3 years ago

7 0

Answer:

7/25 is correct answer dude

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What is the value of x?

tensa zangetsu [6.8K]

Answer:

X = 5°

Step-by-step explanation:

180° on a straight line.

180 - 100 = 80 angle ABC = 80°

angle ACB is vertically opposite to the 60° given

ACB = 60°

180 - 80 - 60 = 7x+5

40 = 7x + 5

7x = 35

X = 5

6 0

2 years ago

Write an equation of the line containing the point (3,5) and perpendicular to the line 4x-3y=5

ICE Princess25 [194]

Answer:

Step-by-step explanation:

In order to write the equation of the line perpendicular to the given line, we first have to know what the slope of the given line is, and there's no way to tell by looking at it in its current form, which is standard. We need to solve that equation for y to determine the slope of that line. Solving for y:

$-3y=-4x+5$ and

3y = 4x - 5 (just change all the signs so our y term isn't negative anymore...yes, you're "allowed" to do that!) and

$y=\frac{4}{3}x-\frac{5}{3}$ So we can see now that the slope of this line is 4/3. That means that the perpendicular slope is -3/4. Passing through the given point (3, 5):

$y-5=-\frac{3}{4}(x-3)$ * and

$y-5=-\frac{3}{4}x+\frac{9}{4}$ and

$y=-\frac{3}{4}x+\frac{9}{4}+\frac{20}{4}$ so

$y=-\frac{3}{4}x+\frac{29}{4}$ ** and, in standard form:

4y = -3x + 29 and

3x + 4y = 29***

* : point-slope form

** : slope-intercept form

*** : standard form

3 0

2 years ago

Evaluate 42 – a² + ab for a = 6 and b = 5.

rodikova [14]

42-(6x6)+(6x5)
42-36+30
6+30
Answer: 36

3 0

2 years ago

Read 2 more answers

25 POINTS!!!!! REAL ANSWERS ONLY!!!!!!!! I WILL REPORT LINKS AND FAKE/WRONG ANSWERS!!!!!!!

Nonamiya [84]

Answer:

7.

lateral surface area of traingular prism=perimeter of traingle ×length=[5+3+4]×6=72cm²

curved surface area=2[area oftraingle]=2×1/2×4×3

=12cm²

now

total surface area=72cm²+12cm²=84cm²

8.

volume of traingular prism=area of traingle ×length

=1/2×12×3.4×4=81.6cm³

3 0

2 years ago

Kevin has 16 ounce can of mixed nuts he gives 1/2 of the mixed nuts to his sister. He then eats 3/4 of the remaining nuts. How m

mixas84 [53]

Kevin will be left with 2 ounces of mixed nuts in the can

Step-by-step explanation:

Given

Total nuts = 16 ounces

As Kevin gave 1/2 of the nuts to his sister, he will be left with

$= \frac{1}{2} * 16\\= 8$

He is left with 8 ounces of mixed nuts

The he eats 3/4 of the remaining

$= \frac{3}{4} * 8 \\= 6\ ounces$

so he is left with 8 - 6 = 2 ounces of mixed nuts

Hence

Kevin will be left with 2 ounces of mixed nuts in the can

Keywords: Fractions, operations on fractions

Learn more about fractions at:

#LearnwithBrainly

8 0

2 years ago