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zaharov [31]
3 years ago
9

How do I do this problem?

Mathematics
1 answer:
Aleks04 [339]3 years ago
4 0
To solve the problem, we can use the angle sum of triangle,where the addition of all triangles would be equal to 180°.

In this case, 90° is already given, hence we can use the rest angles with unknown to set up equaiton:

90° + 2x + 3x = 180°

2x + 3x = 180°- 90°

5x = 90°

x = 90°/5

x = 18°

Therefore, x= 18°.

Hope it helps!
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Tom has three times as many pencils as pens but has a total of de 100 writing utensils. How many pencils and pens does toms have
IrinaVladis [17]

Answer:

Tim has 75 pencils and 25 pens

Step-by-step explanation:

To solve this create a system of equations. To do so, first create an equation for the total number of utensils that he has. Let x equal the number of pencils and y equal the number of pens.

x+ y = 100

Now make one for the comparison of the two and solve for the constant.

x = 3y

x - 3y = 0

Now to solve the system, multiply the second equation by -1 and add them together.

x + y = 100

-x + 3y = 100

-----------------

4y = 100

y = 25

Now that we have the number of pens, find the number of pencils using an equation.

x + y = 100

x + 25 = 100

x = 75

7 0
3 years ago
Use the slope formula to fine the slope between the given two points (5,3) and (5,-9)
Burka [1]

Answer:

0,-12

Step-by-step explanation:

you would put the two x quardinates and subtract them and then do the same for the y quardinates so

5-5 =0

-9-3=-12 so ur answer is 0, -12

8 0
3 years ago
Read 2 more answers
Find the smallest whole number by which 2268 should be multiplied so as to
Brums [2.3K]

Answer:

please see explanation.

Step-by-step explanation:

2268×2=4536

2268×3=6804

2268×4=9072

2268x5=11340

2268×6=13608

2268×7=15876

from the computation 15848 is a perfect square

√15848= 126

to calculate the 126= ✓126=11.225

7 0
3 years ago
I didn't see elementary I'm 9 years old my name is Emma and I was wondering if you can help me with my math​
Alexxandr [17]

Answer:

what kind of math are you working on?

Step-by-step explanation:

I'm pretty good at math, I graduate next year

5 0
3 years ago
Solve the system using elimination.<br> 5x + 3y = − 8 <br> 7x + 2y = − 20
svlad2 [7]
Your answer should be (-4,4). You would multiply the top row by 2 and the bottom one by -3 to get the y’s the same (both would be 6y) then from there solve for x. once you have x plug in for y.
3 0
3 years ago
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