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
liubo4ka [24]
3 years ago
5

Please answer questions 1-3​

Mathematics
1 answer:
alexandr1967 [171]3 years ago
8 0
Base angle of isoseles triangle are equal then,

a)70°+70°+a=180°(sum of interior angle of triangle )

140°+a=180°

a=40°

b)50°+2d=180°

2d=130

d=130/2

d=65

c)28°+28°+x=180°

56°+x=180°

x=124
You might be interested in
Simplify the expression. Write your answer as a power.<br><br> (−5/7)^8⋅(−5/7)^9
dem82 [27]

Answer: (-\frac{5}{7})^{17}

Step-by-step explanation:

The expression can be simplified by applying the a properties of exponents, specifically the Product of powers, which states that:

(b^a)(b^c)=b^{(a+c)

Where b is the base and a and c are exponents.

 Then simplify it by rewriting the base (-\frac{5}{7}) and adding the exponents of the expression (8 and 9).

You will get the expression simplified and written as a power:

(-\frac{5}{7})^8(-\frac{5}{7})^9=(-\frac{5}{7})^{(8+9)}=(-\frac{5}{7})^{17}

3 0
3 years ago
I need help please either discord me the answer at F4deG0d#0988 or do it on here cause this is important.
algol13

Answer:

x= 12.5

So

2x = 25

4x = 50

6x = 75

Step-by-step explanation:

line CG is 180 degrees, so 12x + 30 = 180

x = 12.5

7 0
3 years ago
Solve the system of equations.
guajiro [1.7K]

Answer:

<u>Option b. (x = 3, y = 20, z = -14)</u>

Step-by-step explanation:

Given:

2x + 2y + 3z = 4

5x + 3y + 5z = 5

3x + 4y + 6z = 5

Solve using Cramer’s rule

∴ \left[\begin{array}{ccc}2&2&3\\5&3&5\\3&4&6\end{array}\right] =\left[\begin{array}{ccc}4\\5\\5\end{array}\right]

∴A = \left[\begin{array}{ccc}2&2&3\\5&3&5\\3&4&6\end{array}\right] = -1

Ax = \left[\begin{array}{ccc}4&2&3\\5&3&5\\5&4&6\end{array}\right] = -3

Ay = \left[\begin{array}{ccc}2&4&3\\5&5&5\\3&5&6\end{array}\right] =-20\\

Az = \left[\begin{array}{ccc}2&2&4\\5&3&5\\3&4&5\end{array}\right] = 14

∴ x = Ax/A = -3/-1 = 3

   y = Ay/A = -20/-1 = 20

   z = Az/A = 14/-1 = -14

<u>So, the answer is option b. (x = 3, y = 20, z = -14)</u>

4 0
3 years ago
What is the answer to the following <br>-1+8=​
GenaCL600 [577]

Answer:

Step-by-step explanation:

-1+8=7

8 0
2 years ago
Read 2 more answers
Condense the expression log 2x + log(x² - 9) - log x +3
Rudik [331]
Here the my solutions,hope you understand

4 0
2 years ago
Other questions:
  • PLEASE HELP!! 50 POINTS!!!!!!
    7·2 answers
  • Please look at both pictures~<br> I need two answers
    7·1 answer
  • Solve the proportion 2/19 = x/152
    9·1 answer
  • I need help somebody please help me with my homework. and how you get the answer and explain me thanks
    14·1 answer
  • You can do one-half of a job in an hour. Your friend can do one-third of the same job in an hour. How long will it take to do th
    11·1 answer
  • The first person to answer this will get brainliest so good luck :D
    7·2 answers
  • I need help whats 9+10??? Please it an emergency and what y’all’s discord with number please!!!
    10·2 answers
  • Find the IQR of the data set<br> 1,1,3,4,4,5,5,5,6,7,9
    14·1 answer
  • A piece of property has the
    11·1 answer
  • Whats 12 divided by 12 it was a big deal In my 5th grade also i have been warned
    6·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!