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devlian [24]
3 years ago
5

Use substitution to solve the system of equations

Mathematics
1 answer:
mr_godi [17]3 years ago
8 0
C,A,D your answer i think i solve and that wht i got
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The world's smallest plane has a length of 12 feet and the world's longest plane has a length of 302 feet. Write an absolute val
iren [92.7K]

An absolute value equation which could represent the length of a plane is : 12 feets ≥ x ≤ 302 feets

Smallest length of a plane = 12 feets

Longest length of a plane = 302 feets

This means that the minimum length of a plane cannot be below 12 feets and the maximum length of a plane cannot be above 302 feets

Using x as the length of a plane :

To represent as an absolute value ; we use inequality :

Minimum length ≥ x ≤ maximum length

12 feets ≥ x ≤ 302 feets .

Learn more : brainly.com/question/18109354

8 0
2 years ago
A painting measure 40 cm by 35 cm how many squared cm does its surface cover
miskamm [114]

Answer: Its surface covers  1400 cm²

Explanation:

Since the length of painting = 40 cm

Breadth of painting = 35 cm

Since we know that area of rectangle is product of dimensions.

∴ Area of painting = length × breadth

= 40 cm × 35 cm

= 1400 cm²

∴ Its surface cover  1400 cm².

8 0
3 years ago
Which expression can be used to find 15% of 20?
dezoksy [38]

Answer:

Expression:  0.15 * 20

Equation: 0.15 * 20 = 3

Step-by-step explanation:

This expression was found by dividing 15% by 100 to convert it into a decimal (0.15) that can be used to multiply with 20 to get your answer.

5 0
3 years ago
Which of the following angles is in the solution set of sec^2θ - 3secθ - 2 = 0 for 0° ≤ θ < 360°.
STALIN [3.7K]
1 / cos^2 O - 3 / cos O - 2 = 0
1 - 3 cos O -  2 cos^2 O = 0

2 cos^2 O + 3 cos O - 1 = 0

cos O = 0.2807 , -1.78   ( -1.78 cannot be a solution)

O = 74 degrees  (from  0.2807) another solution is 360-74 =  286 degrees

Its D
4 0
3 years ago
How to determine if the function has x-axis sym, y-axis sym, and origin sym<br><br> y^2 -xy =2
n200080 [17]

To check for symmetry on the x axis, replace y with –y

-y^2 –x(-y) =2

<span> Apply the product rule, since the equation is not identical tot eh original equation it is not symmetric about the x axis</span>

<span> Now do the same for y axis by replacing x with –x</span>

<span> Again using product rule the equations are not identical, so it is not symmetric about the y axis</span>

<span> To check the origin,</span>

<span> Replace both x & y with –x  & -y</span>

Again using product rule, the equations are not identical so it is not symmetric about the origin


8 0
3 years ago
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