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seropon [69]
3 years ago
15

What would the answer to this question be? A. 40° B. 60° C. 80° D. 100°

Mathematics
2 answers:
Alex777 [14]3 years ago
8 0

Answer:

D. 100°

Step-by-step explanation:

A straight line is 180°. Add 50° and 30° (which is 80°) and subtract the total from 180°.

50 + 30 = 80

180 - 80 = 100

vichka [17]3 years ago
5 0

Answer:

These angles form a straight line, so they are supplementary angles.

We know that, supplementary angles form 180°.

50 + x + 30 = 180 \\ 50 + 30 + x = 180 \\ 80 + x = 180 \\ x = 180 - 80 \\ x = 100

=> So, the missing angles is <u>100°</u>

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A bag contains red, green, and yellow marbles. The probability of selecting a red marble is 35%. What is the probability of not
KonstantinChe [14]

Probablity of selecting a red marble= 35%

Probablity of not selecting a red marble= 100%-35%

=65%

Hope it helps you. Please mark brainliest.

6 0
2 years ago
How can I show money as a fraction?
abruzzese [7]
You can show money as a fraction by taking the amount of cents, and putting it over 100.

Ex. $1.47 = 147 cents
147 cents = 147/100 in fraction form.
4 0
3 years ago
What’s 15x - 25 + 2 = 22 (with steps)
cupoosta [38]

Answer: x= 3

Step-by-step explanation:

15x-25+2=22

15x-25=25

15x=50

x=3.333333

x=3

6 0
2 years ago
Read 2 more answers
A triangular pyramid is cut by a plane. In which case is the cross section a quadrilateral?
Pie

Answer:

(D) is the right answer

Step-by-step explanation:

The cross section will be a quadrilateral when the intersecting plane forms a closed four sided polygon along with the pyramid.

A triangular pyramid has four faces.  So, to form four straight lines and therefore a quadrilateral, the intersecting plane must intersect all four faces.

A. In this case the plane will only intersect one side of the pyramid so four sided polygon can't be formed.

B. It will only intersect the two sides of the pyramid but the cross section will not be a quadrilateral.

C. In this case the plane will intersect three sides of the pyramid so the cross section will be a triangle not a quadrilateral.

D. In this case the plane intersects all the four faces forming a closed polygon of 4 straight lines so the cross section will be a quadrilateral.

So, the Correct Option is (D) : When the plane intersects the base and all three lateral faces of the pyramid, the cross section of the triangular pyramid will be a quadrilateral.


8 0
2 years ago
The area of a rectangular wall of a barn is 64 square feet. Its length is 8 feet longer than twice its width. Find the length an
ValentinkaMS [17]
L×w=64 ft^2...(1)
2w+8= l...(2)

l=64-w...(1a)

2w+8= 64-w
2w+w+8=64
3w=64-8
3w÷3= 56÷3
w=18.6'

l×w= 64
l×18.6= 64
l= 64÷18.6
l= 3.44 to the nearest hundredths.
6 0
3 years ago
Read 2 more answers
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