Answer:
C.
Multiply the first equation by 18; multiply the second equation by 18; add the equations.
D.
Multiply the first equation by − 6; multiply the second equation by 4; add the two equations.
E.
Multiply the first equation by 3; multiply the second equation by − 2;add the two equations.
Step-by-step explanation:
All of these procedures work because they are canceling out the x and y values in both equations.
Answer: the answer is d
Step-by-step explanation: its d
Answer:
- rational
- irrational
- irrational
- irrational
- √7, it is irrational
Step-by-step explanation:
A <em>rational</em> number is one that can be expressed as the ratio of two integers. All fractions that have integer numerators and (non-zero) denominators are <em>rational</em> numbers. Any finite decimal number, or any repeating decimal number, is a rational number. These can always be expressed as the ratio of two integers. For example, 0.4040... = 40/99, and 0.286 = 286/1000.
To make an irrational sum, at least one of the contributors must be irrational. You want an irrational 2-number sum that has 7/8 as one of the contributors. Since 7/8 is rational, the other contributor must be irrational.
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<u>Step 1</u>. The number 7/8 is <em>rational</em>.
<u>Step 2</u>. The desired sum is <em>irrational</em>.
<u>Step 3</u>. The rule <em>rational + </em><em>irrational</em><em> = irrational</em> applies.
<u>Step 4</u>. An <em>irrational</em> number must be chosen.
Step 5. √7 will produce an irrational sum, because <em>it is irrational</em>.
Answer:
9.2 cm.
Step-by-step explanation:
A pyramid has a horizontal square base of 12 cm. The vertex of the pyramid is 7 cm vertically above the base.
So, the height of the pyramid is 7 cm and half-length i.e. half base is equal to cm.
Now, the slant height of a pyramid is the altitude of the side triangles.
Therefore, the length of the slant height will be equal to cm ≈ 9.2 cm. (Answer)
Answer:
yes
Step-by-step explanation:
yes it will be rational because 50 can be divided by 25 and negative times negative is positive which brings out the answer 2 which is rational.