22 pencils divided by three people evenly

Right triangle ABC is shown. Which of these is equal to cos(A)?

REY [17]

Answer: C

cosA=AC/AB

sinB=AC/AB

hence cosA=sinB

7 0

3 years ago

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Help #4-8 please thank you

Olin [163]

Answer:

#4: 130/60, simplified is 13/6 (divide numerator and denominator by 10)

#5: 110/130, simplified is 11/13 (divide numerator and denominator by 10)

#6: 5/12

#7: 4/12, simplified is 1/3 (divide numerator and denominator by 4)

#8: 12/4, simplified is 3, or 3/1 (divide numerator and denominator by 4)

Step-by-step explanation:

#4: Part 1 is 60 miles, and the whole trip is 60 + 20 + 50 = 130 miles

So while #1 was 60 over 130 for "60 to 130", now we'll put the 130 on top of the 60 for "130 to 60" as a spoken ratio

#5: I think they mean add part 1 to part 3, then compare to the whole.

so 60 + 50 = 110, and your answer is 110/130

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Punch: 3 pints Hawaiian punch, 4 pints of orange juice, 5 pints of ginger ale is the recipe. When you pour that all together, you have 3 + 4 + 5 pints of mixed punch as a total, or 12 pints.

#6: 5 pints of ginger ale to 12 pints of punch: 5/12

#7: 4 pints of orange juice to 12 pints of punch: 4/12

#8 12 pints of the whole drink to 4 pints of orange juice: 12/4

6 0

2 years ago

I need help please you haft to use elimination to solve thanks

nekit [7.7K]

-7x+14y=-14
-3x+7y=-3
when using elimination you need to multiply or divide one equation to be able to “eliminate” a variable.
-7x+14y=-14
-2(-3x+7y=-13)
multiply the second equation by -2
-7x+14y=-14
6x-14y=6
simplify
-1x=-8
divide by -1 on both sides to isolate the x
x=8
now you can plug in 8 for x in one of the equations.
-3(8)+7y=-3
simplify
-24+7y=-3
add -24 to both sides the isolate the constant and variable
7y=21
now divide by 7 on both sides to isolate y
y=3
this system of equation had one solution at (8, 3)

i hope this helps :)

3 0

3 years ago

Which equation represents the graphed function?

makvit [3.9K]

The equation y = –2 x + 3 represents the graphed function.

Answer: Option A

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

As per the mapping points in the attached figure, A (0, 3) and B (1, 1)

Step 1: Find the slope of the line.

We know that the formula to calculate the slope between two points is equal to

$m=\frac{y_{2}-y_{1}}{x_{2}-x_{1}}$

$\left(x_{1}, y_{1}\right)=(0,3) \text { and }\left(x_{2}, y_{2}\right)=(1,1)$ . So, the slope ‘m’ would be

$m=\frac{1-3}{1-0}=-2$

Step 2: Find the y-intercept

We know that the y-intercept is the value of y when the value of x is equal to zero. In this problem the y-intercept is the point A (0, 3)

Step 3: Find the equation of the line into slope-intercept form

We know that the equation of the line into slope-intercept form is equal to

y = m x + b

We have m = - 2 and b = 3 as b is equal to the y-coordinate of the y-intercept. Substitute these, we get

y = - 2 x + 3

8 0

2 years ago

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Can someone help me with my math?

umka2103 [35]

Answer:

Trinity, find the answers below

Step-by-step explanation:

for the 1st picture, minor angels ∠1, ∠2, ∠3 are all the same as the shown angle of 130°

for the 2nd picture, minor angles ∠2, ∠3 are the same as the shown angle of 80° and ∠1 is the adjacent angle to 80°, so it's 100° , because 180° - 80° = 100°

8 0

2 years ago