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Inessa05 [86]
3 years ago
13

Can someone please help me please?

Mathematics
1 answer:
levacccp [35]3 years ago
6 0

Answer:

B

Step-by-step explanation:

You solve x by finding a, b, and c of the quadratic then applying the quadratic formula.

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What is the value of the missing angle?
Svetach [21]

Question 1.

Formula for the sum of the measures of the interior angles of an n-sided polygon:

S = 180° · (n – 2)

A hexagon has 6 edges (hence 6 interior angles), so for this question, the that sum is

S = 180° ·(6 – 2)                 (n = 6)

S = 180° · 4

S = 720°  <———   sum of the interior angles of a hexagon.


Then, just sum all the measures of the interior angles and it must be equal to 720°:

150° + 95° + 105° + 145° + 95° + x = 720°

590° + x = 720°

x = 720° – 590°

x = 130°   <———   this is the measure of the missing angle.

The second option is the correct:  130°.

—————

Question 2.

•  length of the triangle's base:   b = 8.7 ft;

•  length of the corresponding height:   h = 4.5 ft.


The area of the triangle is given by  this formula. Just plug in values:

           b × h
A  =  ————
              2

          (8.7 ft) × (4.5 ft)
A  =  —————————
                      2

           8.7 × 4.5
A  =  ——————  ft²
                 2

          39.15
A  =  ————  ft²
              2

A = 19.575 ft²   <———  this is the correct answer (second option).


I hope this helps. =)

8 0
3 years ago
Breta worked to solve a system of equations 4x +y=-5 x-y=-5
Sever21 [200]

Answer:

x=-2, y=3. (-2, 3).

Step-by-step explanation:

4x+y=-5

x-y=-5

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

x=y+(-5)

x=y-5

substitute into the first equation,

4(y-5)+y=-5

4y-20+y=-5

5y-20=-5

5y=-5+20

5y=15

y=15/5=3

x=3-5=-2

8 0
3 years ago
What is 6n - 15<br><br> Plz answer quickly. I need help
NARA [144]

Answer:

n=-2.5

Step-by-step explanation:

I hope this is correct and have a great day

8 0
3 years ago
Chang runs 7 miles in 60 minutes. At the same rate, how many miles would he run in 24 minutes.
Virty [35]

Answer:

2.8miles

Step-by-step explanation:

Miles = 7

Time= 60min

constant(k) = 7/60

~~~~~~~

miles = x

time= 24 min

7/60 = x/ 24

x= 7/60 x 24

 = 2.8 miles

iI hope im right!!

3 0
3 years ago
Read 2 more answers
May I please receive help?
storchak [24]

Answer:

what u will recieve

Step-by-step explanation:

please telle

6 0
3 years ago
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