1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
svetoff [14.1K]
3 years ago
12

How can I solve these problems

Mathematics
2 answers:
telo118 [61]3 years ago
8 0
For the first 6 problems you need to know that all the angles in a triangle are equal to 180°.

for example: #1

60 + 75 + x = 180
x = 180 - (60 + 75)
x = 180 - 135
x = 45°

for numbers 7 and 8, you just need to know that vertical angles are equal to each other.

for example: #7

3x = 45°
x = 45 ÷ 3
x = 15°

for number 9, you need to know that those to angles add up to give you 180° because lines are 180°.

for example: #9

5x + 12 + 68 = 180°
5x + 80 = 180
5x = 180 - 80
5x = 100
x = 100 ÷ 5
x = 20°

I really hope that this made sense to you and that this actually helped you.
KATRIN_1 [288]3 years ago
4 0

Answer:


Step-by-step explanation:

Easy the three angles of a triangle equal 180 degrees

so 60+75 = 135 --> 180-135=

1) 145

2) 35

3)  no since the tops a 100 and its a Isosceles triangle two corners left it be 40 for each corner

4) 34 for both x's cause 34+34+112. = 180

5) 180- 120= 60- 10 = 50/4 is (12.5)= x

6) x = 15 cause it be 120- 60 to get 60

You might be interested in
Two students, Raymond and Shauna, are trying to get city council members to vote for a new park along the river. 2/6 of the 24 c
galina1969 [7]
Raymond and Shauna must convince at least 5 more city council member. Because if every 2/6 members agree with the idea, then there would be 8 people out 24 that already agree with the idea. So if you have already 8 members then to make 13, you just need 5 (8 + 5=13) more people to 13.
6 0
3 years ago
Find the balance in the account after the given period. ​$2000 principal earning 6​% compounded​ annually, for 8 years. The bala
Harman [31]
Do 2000 divided by 8 than divided that by 6%
8 0
3 years ago
Read 2 more answers
the perimeter of a rectangle is 55 inches. the ratio of the length to width is 7:4. use proportions to find the area of the rect
Leni [432]

Answer:

Step-by-step explanation:

let : x the length and y the width    .... ( x  > y and x ; y reals numbers )

the perimeter is : 2(x+y)

2(x+y) = 55...(1)

x/y = 7/4 ...(2)

by (2) : x = (7/4)y

subsct in (1) : 2( (7/4)y +y ) =55

(7/2)y +2y =55

multiply by 2

7y +4y = 110

11y = 110

y = 10

x = (7/4)(10)

x = 35/2

4 0
3 years ago
How many solutions are there to the following system of equations?
sweet [91]
4x-8y=0 \\
\underline{-3x+8y=-7} \\
4x-3x=0-7 \\
x=-7 \\ \\
4x-8y=0 \\
4 \times (-7)-8y=0 \\
-28-8y=0 \\
-8y=28 \\
y=\frac{28}{-8} \\
y=-\frac{7}{2} \\ \\
 \left \{ {{x=-7} \atop {y=-\frac{7}{2}}} \right.

There is one solution to this system of equations. The answer is B.
6 0
3 years ago
Read 2 more answers
Simplify 3x[18+{3+4÷(4-2)}]
tresset_1 [31]

✽ - - - - - - - - - - - - - - - ~Hello There!~ - - - - - - - - - - - - - - - ✽

3 \times 18 +  3 + 4 \div ( 4 - 2)

= 54 + 3 + \frac{4}{4 - 2}

= 57 + \frac{4}{4 - 2}

= 57 + \frac{4}{2}

= 57 + 2

= 59

✽

➶ Hope This Helps You!

➶ Good Luck (:

➶ Have A Great Day ^-^

↬ May ♡

8 0
3 years ago
Read 2 more answers
Other questions:
  • Find The Distance Between (6,1) and (-2,-4)
    7·1 answer
  • In october 2012, apple introduced a much smaller variant of the apple ipad, known as the ipad mini. weighing less than 11 ounces
    6·2 answers
  • the equation of a line is y=4x-8. write an equation of a line that is parallel to this line that passes through the points (-4,-
    13·1 answer
  • Can some one please answer. There is one problem. There's a picture. Thank you!
    15·1 answer
  • What is the midpoint of the line segment with endpoints (–1, 7) and (3, –3)?
    7·1 answer
  • Please help!! ill mark you as brain!!
    8·1 answer
  • creating a diagram so far this session a team has won 51 out of 68 games identify the value of a b c and d that complete the bar
    12·1 answer
  • Find the area of the triangle.<br><br> A. 75 km²<br> B. 107.3 km²<br> C. 84.3 km²<br> D. 71.8 km²
    14·1 answer
  • Question 2<br> Which is the best estimate of the solution to this system<br> of equations?
    10·1 answer
  • If 1=3<br><br> 2=3<br><br> 3=5<br><br> 4=4<br><br> 5=4<br><br> Then, 6=?
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!