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ArbitrLikvidat [17]
3 years ago
11

A student is trying to solve the system of two equations given below:

Mathematics
1 answer:
Mariana [72]3 years ago
5 0

Answer:

A)−3(y + z = 4)

Step-by-step explanation:

Equation P: y + z = 4  

Equation Q: 3y + 7z = 15  

To eliminate the y term,  The equations have to have the coefficients on y equal and opposite.

Equation Q has 3y, so Equation P needs -3y

Multiply equation P by -3

−3(y + z = 4)

You might be interested in
X>-4
Oksana_A [137]

The solution set of the inequality x ≥ - 4 using set builder notation and interval notation is {x | x ∈ Z, - 4 ≤ x ≤ ∞ } and [ - 4, ∞ ) respectively.

An inequality in mathematics is a relation that compares two numbers or other mathematical expressions in an unequal way.

A set can be represented by its elements or the properties that each of its members must meet can be described using set-builder notation.

Interval Notation: A set of real numbers known as an interval contains all real numbers that fall inside any two of the set's numbers.

Consider the inequality,

x ≥ - 4

In the number line, the value of x is equal to and greater than - 4 increasing to infinity.

Therefore,

The solution set using the set builder notation is:

{x | x ∈ Z, - 4 ≤ x ≤ ∞ }

The solution set of the inequality using the interval notation is:

[ - 4, ∞ )

Learn more about set builder notation here:

brainly.com/question/13420868

#SPJ1

8 0
1 year ago
Word problem with time....find the answer pleaseee
topjm [15]

Answer:

10.35 am

Step-by-step explanation:

Find the LCM

LCM = 275 minutes ÷ 60 minutes to change into hours

= 4hrs 35 min

6.00am + 4hrs 35min

= 10.35 am

8 0
4 years ago
What is the end behavior of the function f(x) = −3x4−x3 + 2x2 + 4x + 5? Select one: a. Up on the left, up on the right b. Up on
lubasha [3.4K]
The graph falls to the left and falls to the right.
7 0
3 years ago
Please helpppppp meeee
yKpoI14uk [10]

Answer:

0.25     Converges

Step-by-step explanation:

First, we need to expand our series so that we get the following:

\sum _{n=1}^{\infty \:}\frac{n}{4^n}+\frac{1}{4^{n+1}}

We can then use the series ratio test on each term. (L < 1 = absolutely convergent)

\sum _{n=1}^{\infty \:}\frac{n}{4^n}

\lim_{n \to \infty} \frac{n}{4^{n}\\} =

⇒  converges

\sum _{n=1}^{\infty \:}\frac{1}{4^n^+1}

\lim_{n \to \infty} \frac{n}{4^{n}^+1\\}

⇒  converges

converges + converges

= converges

~Hope this helps! Once again, sorry if my explanation is a bit confusing~

8 0
3 years ago
Daniel has 12 tennis balls. Manual has twice as many tennis balls as Daniel. Kendra has twice as many balls as Manuel . How many
77julia77 [94]
Daniel -- 12 balls

Manuel -- 12 balls × 2 = 24

Kendra -- 24 balls x 2 = 48

12 + 24 + 48 = 84 balls total
8 0
3 years ago
Read 2 more answers
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