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
leonid [27]
3 years ago
14

What is the length of side AC of the triangle?

Mathematics
1 answer:
ryzh [129]3 years ago
3 0

Answer:

AC = 25 units

Step-by-step explanation:

Given ∠ A = ∠ C then the triangle is isosceles and BC = AB , that is

7x - 1 = 5x + 5 ( subtract 5x from both sides )

2x - 1 = 5 ( add 1 to both sides )

2x = 6 ( divide both sides by 2 )

x = 3

Then

AC = 6x + 7 = 6(3) + 7 = 18 + 7 = 25 units

You might be interested in
HELP ME PLSSSSSS!!!!!!!
n200080 [17]

Answer:

1) m\angle x = 35^{\circ}, 2) m\angle x = 60^{\circ}, 3) m \angle x  = 40^{\circ}

Step-by-step explanation:

1) Triangle is a right triangle since tangent line is perpendicular to the radius of the circle. Based on the fact that the sum of internal angles in triangles equals 180°, we find the value of the angle x:

m\angle x = 180^{\circ} - 90^{\circ} - 55^{\circ}

m\angle x = 35^{\circ}

2) Both triangles are symmetrical right triangles since tangent lines are perpendicular to the two radii and common side is parallel to the third radius. Based on the fact that the sum of internal angles in triangles equals 180°, we find the value of the angle x:

m \angle x = 180^{\circ} - 90^{\circ} - 30^{\circ}

m\angle x = 60^{\circ}

3) The figure is formed by two symmetrical right triangles. These triangles are right-angled and symmetrical since tangent lines are perpendicular to the two radii and common side is parallel to the third radius. Based on the fact that the sum of internal angles in quadrilaterals equals 360°, we find the value of the angle x:

m\angle x = 360^{\circ} - 180^{\circ} - 140^{\circ}

m \angle x  = 40^{\circ}

4 0
3 years ago
What is the surface area of the composite solid? a rectangular prism with a length of 2 meters, width of 8 meters, and height of
Anna007 [38]

Using the formula for the surface area of a rectangular prism, the surface area of the composite solid is: C. 162m²

<h3>What is the Surface Area of a Rectangular Prism?</h3>

Surface area of a rectangular prism = 2(wl+hl+hw)

Surface area of the composite shape = surface area of the larger prism + surface area of the smaller prism - area of the face both prisms are joined together

Surface area of the larger prism = 2(wl+hl+hw) = 2(2×3 + 9×3 + 9×2) = 102 m²

Surface area of the smaller prism = 2(wl+hl+hw) = 2(2×8 + 2×8 + 2×2) = 72 m²

Area of the face both prisms are joined together = 2(l×w) = 2(3 × 2) = 6 m²

Surface area of the composite shape = (102 + 72) - 12 = 162m²

Learn more about surface area of rectangular prism on:

brainly.com/question/1310421

#SPJ4

4 0
1 year ago
Read 2 more answers
Twice a number X is most -24
hichkok12 [17]
2x=-24. divide by 2 on both sides

x= -12
3 0
2 years ago
Joe ate 1/2 of a pound of peanuts in 1/3 of an hour.
saul85 [17]

Answer:

1 1/2  lbs   and      2 1/4 lbs

Step-by-step explanation:

4 0
3 years ago
What is the number of terms in this geometric series?<br> 1+2+4...+128
Stella [2.4K]
The answer is : a^2=1 x 2^n-1

To check if it’s correct

a^2= 1 x 2^2-1

a^2 = 1x 2
a^2 = 2

Hope this helps!



5 0
2 years ago
Other questions:
  • 5. Sophia purchases a cell phone for $25. This amount includes a tax of 6%. What was the cost of the item before tax?
    15·2 answers
  • 4x/5-12=20 PLEASE I REALLY NEED HELP
    14·1 answer
  • I need help can someone pls find the answer
    15·1 answer
  • Last year a website had 40,000 visitors and this year it had 37,000 visitors.What is the percent change in the number of visitor
    8·1 answer
  • A pattern of being late for or for appointments is usually
    15·1 answer
  • The circle below is centered at the point (4, 3) and has a radius of length 5. What is its equation?
    6·2 answers
  • Given the equation 25 + 7x = 11<br> x = -2<br> x = 2<br> X = -14<br> x = 14
    8·1 answer
  • Which equation represents the line that is perpendicular to and passes through (-6,-9)?
    15·1 answer
  • Jaxson wants to buy kiwi and raspberries to make a fruit tart. Kiwi cost $3 per pound and raspberries cost $2.50 per pound. How
    12·1 answer
  • 222222pls helppppppp
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!