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earnstyle [38]
2 years ago
6

Can someone help me . many points. also plz explain your answer.

Mathematics
1 answer:
Oxana [17]2 years ago
5 0
These are complementary angles, meaning they add up to 180
Let's write an equation
180=38 + 42 + (2x+10)
subtract 38 from both sides
142 = 42 + 2x + 10
subtract 42 from both sides
100 = 2x + 10
subtract 10 from both sides
90 = 2x 
divide both sides by 2
45 = x
Plug that back into the angle
2x+10
2(45)+ 10
90 + 10
100
The angle is 100 degrees.

To check:
180 =?= 38 + 42 + (2x+10)
180 =?= 38 + 42 + (2(45) + 10)
180 =?= 80 + (90 + 10)
180 =?= 80 + 100
180 = 180

Hope this helps :)

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An 18 ounce box of cereal costs $2.76. How many ounces should a box priced at $2.07 contain?
Darya [45]
First you find the unit rate. (Divide 2.76 by 18)
You will find out that each ounce costs $0.15

Then divide 2.07 by 0.15.

The answer is 13.8 ounces.

5 0
3 years ago
Adds up to 13 multiplies to -48
fiasKO [112]
You only need two numbers to do that.
The numbers are  16  and  -3 .

           16  -  3  =  13

         (16) x (-3)  =  -48
7 0
3 years ago
Angle 1 and Angle 2 form a linear pair. If the measure of angle is 113°, find the measure of angle 2.​
LuckyWell [14K]

Answer:

<2 =67

Step-by-step explanation:

A linear pair adds to 180 degrees

<1 + <2 =180

113+ <2 = 180

<2 = 180-113

<2 =67

5 0
2 years ago
What is the volume of the square-based pyramid shown below?
Taya2010 [7]

Answer:

12 cm³

Step-by-step explanation:

Formula :

edge^2(\frac{height}{3} )

input

3²(4/3)

x3 and /3 cancel out

remaining = 3(4) = 12

units = cm³

12 cm³

If my answer is incorrect, pls correct me!

If you like my answer and explanation, mark me as brainliest!

-Chetan K

3 0
3 years ago
A regular octagon has an apothem of 16.9 cm and a side length of 14 cm. Find the area to the nearest tenth.
jolli1 [7]

Answer:

946.4 cm

Step-by-step explanation:

Formula for finding the area of any polygon :

number of sides (n) x 0.5 x length of sides (s) x apothem (a)

Area = 8 x 0.5 x 14 x 16.9 = 946.4

hope this helps ! :)

8 0
1 year ago
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