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MariettaO [177]
3 years ago
15

What is the value of x

Mathematics
1 answer:
emmainna [20.7K]3 years ago
3 0

Question

What is the value of x


Answer:

<h2>39</h2>

Step-by-step explanation:

the sum of the interior angles  is 180° (triangles only)

take away from 180° the know angles

180 - 102 - 39 =

39




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Vertex = (2,5), Point (0, 1)
Rama09 [41]

Answer:

therefore y= - (x-2)^2 + 5

Step-by-step explanation:

u do this by using this format here ..,

y=a(x-h)^2+k

sub in the vertex points as h=2 and k = 5 , since the 2 is positive its sign will be -2 in the brackets because when solving for x-2=0 it is x=2

y=a(x-2)^2+5

then with your (0,1) points plug that in as y and x

1=a(0-2)^2+5

1=a(-2)^2+5

1=4a+5

1-5=4a

-4=4a

a=-1

therefore y= - (x-2)^2 + 5

8 0
3 years ago
What is the volume of a cube on which each face has a diagonal of 12.8 inches? (round to nearest tenth)
Aleksandr-060686 [28]

Answer:

volume of cube = side^3

=12.8^3

=2097. 152

7 0
3 years ago
Read 2 more answers
Help me please it’s important
Doss [256]

Answer:

3

Step-by-step explanation:

Cube root of 27 is 3.

3³ = 27.

6 0
3 years ago
Can someone Help pleaseeeee
svlad2 [7]

Given:

Length = 20 cm

Width = 4.5 cm

Height = 23 cm

To find:

Surface area of rectangular prism

Solution:

Surface area formula:

SA = length × width × height

     = 20 × 4.5 × 23

     = 2070

Surface area of cylinder is 2070 square centimeters.

5 0
3 years ago
John has 3 red markers and 5 blue markers. What is the probability that he picks a red marker, and then, without replacing it, s
GaryK [48]
First time he picks a marker there is a 3/8 chance because 3 markers out of all the markers.

second time there is a 2/7 chance because there are only 7 markers left and 2 markers of those are red

so it would be 3/8 times 2/7 or about .107 
8 0
3 years ago
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