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
sleet_krkn [62]
3 years ago
15

How do I do this Q11

Mathematics
1 answer:
SashulF [63]3 years ago
5 0
Look at one of the vertices of the heptagon where two squares meet. The angles within the squares are both of measure 90 degrees, so together they make up 180 degrees.

All the angles at one vertex must clearly add up to 360 degrees. If the angles from the squares contribute a total of 180 degrees, then the two remaining angles (the interior angle of the heptagon and the marked angle) must also be supplementary and add to 180 degrees. This means we can treat the marked angles as exterior angles to the corresponding interior angle.

Finally, we know that for any convex polygon, the exterior angles (the angles that supplement the interior angles of the polygon) all add to 360 degrees (recall the exterior angle sum theorem). This means all the marked angles sum to 360 degrees as well, so the answer is B.
You might be interested in
Jane has three boxes she needs to ship. Box X weighs 33 kg more than Box Y and Box Z weighs 12 kg more than Box Y. She
andreyandreev [35.5K]

Answer:

3w+45=557

Step-by-step explanation:

Let the weight of box Y be w kg.

Box X weighs 33 kg more than Box Y, then the weight of box X is

w+33 kg.

Box Z weighs 12 kg more than Box Y, then the weight of box Z is

w+12 kg.

The total weight of all boxes is

w+(w+33)+(w+12)=w+w+33+w+12=3w+45 kg

Jane measured the total weight of all the boxes and it was found to be 557 kg, therefore,

3w+45=557

or

3w=512

3 0
3 years ago
The distance from first base to third base on a baseball diamond is 1.4 times the distance from home plate to third base, which
Elina [12.6K]

The distance across the diamond is 114.6 feet should be the answer

:)


8 0
3 years ago
Read 2 more answers
Adam is n years old . Mary Beth is 3n + 4 years old . If Adam is 9 years old, how old is Mary Beth?
Rzqust [24]

Answer: Brailiest plz?

31

Step-by-step explanation:

(3)(9)+4=31

7 0
3 years ago
Keelie has a triangular-shaped card. The lengths of its sides are 3.9 cm, 5.2 cm, and 6.5 cm. Is the card a right triangle?
alexdok [17]

Answer:

Yes

Step-by-step explanation:

Since the longest side is 6.5 cm, so let it be hypotenuse c.

Verifying by right angle formula

c^2=a^2+b^2

(6.5)^2=(3.9)^2+(5.2)^2

42.25=15.21+27.04

42.25=42.25

Hence the given triangle is a right angles triangle

3 0
3 years ago
The price of an item yesterday was $120 . today, the price rose to $204 . find the percentage increase.
Rzqust [24]
204 - 120 = 84

84/120 x 100 = 70%

answer: 70% increase
6 0
3 years ago
Other questions:
  • A youth soccer association raised ​$5145 in​ fund-raising projects. There were expenses of ​$777 that had to be paid​ first, wit
    7·1 answer
  • Compare 5/4 and 9/10 describe two methods you could use to compare the fractions
    11·2 answers
  • Find the volume of the wedge cut from the first octant by the cylinder z=12-3y^2 and the plane x+y=2.
    11·1 answer
  • What is the solution set of the following equation?
    15·1 answer
  • How to solve logarithmic equations as such
    5·1 answer
  • Which is the sum of the 2 smallest angles in a right triangle?
    14·1 answer
  • WHAT INFORMATION DOES THE CORRELATION COEFFICIENT TELL YOU ABOUT A SCATTERPLOT
    10·1 answer
  • The equation g(x) = f(x + 2) is graphed on a coordinate plane. Which equation, h(x), results from moving g(x) to the right 2 uni
    14·1 answer
  • Binks needs to raise at least $3600. He was given $200 and plans to save $50 a week. Select all of the inequalities that represe
    13·1 answer
  • A ray and a line intersect to form ∠1 and ∠2 as shown below.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!