All categories

3 years ago

In order to solve the system of equations below, Harvey multiplies each equation by a constant to eliminate the x terms.

Mathematics

2 answers:

LUCKY_DIMON [66]3 years ago

8 0

Answer:

Step-by-step explanation:

i got it right on e2020 lol

Karo-lina-s [1.5K]3 years ago

5 0

Answer:

<u>The correct answer is A. 14 x + 6 y = 10. Negative 14 x minus 35 y = 77</u>

Step-by-step explanation:

Let's find out the constants to eliminate the x terms

7 x + 3 y = 5

2 x + 5 y = negative 11

Let's multiply the first equation by 2 and the second one by -7, this way:

2 * (7 x + 3 y = 5)

-7 * (2 x + 5 y = negative 11)

14x + 6y = 10

-14x - 35y = 77

<u>The correct answer is A. 14 x + 6 y = 10. Negative 14 x minus 35 y = 77</u>

You might be interested in

Which of the following functions is quadratic? f(x)=3(x-4)(x+3), f(x)=5^2, f(x)=2/x, f(x)=2x^3+3x^2-5

DENIUS [597]

In B 5^2 = 25. There is no x anywhere.
In C f(x) = 2/x is a function of a reciprocal, not a quadratic.
In D f(x) = 2x^3 + 3x^2 - 5 is a cubic. A cubic is not a quadratic. The highest power of a quadratic is x^2

That leaves A. When you expand the brackets, you get
3(x^2 + 3x- 4x - 12)
2(x^2 - x - 12) when you remove the brackets you get
2x^2 - 2x - 24. The highest power of x is x^2. This is your quadratic.

A<<<< answer.

8 0

3 years ago

In January Jennifer was allowed to use 150 text messages. If she is allowed to use the same amount of text messages every month.

Firlakuza [10]

She would have used 1200 messages in all by the month of August.

Step-by-step explanation:

Messages allowed per month = 150

There will be 8 months starting from January to August, therefore,

Time period = 8 months

Messages in 8 months = Messages per month * Time period

$Messages\ in\ 8\ months=150*8\\Messages\ in\ 8\ months=1200$

She would have used 1200 messages in all by the month of August.

Keywords: Multiplication

Learn more about multiplication at:

#LearnwithBrainly

6 0

3 years ago

Find the measure of x . Answer me please

Komok [63]

Answer:

Step-by-step explanation:

The sum of measure of exterior angles is equal to 360

5x-20+2x+5+x+15+x = 360 add like terms

9x = 360 divide both sides by 9

x = 40

4 0

3 years ago

What number is 4 times as many as 25

enyata [817]

A number 4 times as much as 25 is 100

7 0

3 years ago

A submarine descended 3 feet per minute.If the surface of the water is 0, which integer describes the position of the submarine

marin [14]

Answer:

-24

Step-by-step explanation:

-3*8=-24

8 0

3 years ago