All categories

3 years ago

What number would you multiply the 1st equation by to eliminate y? -4x - y = -11 -6x - 3y= -27

Mathematics

2 answers:

katrin [286]3 years ago

8 0

Answer:

Step-by-step explanation:

Multiply 1st equation by -3

Add both the equations

Degger [83]3 years ago

3 0

Answer:

Multiply 1st equation by 3

Step-by-step explanation:

To eliminate -3y, we must multiply the 1st equation by such a number that the -y becomes -3y. This can be done by multiplying the 1st equation by 3.

If you would like more tutoring in math or other subjects for FREE, check out growthinyouth.org.

You might be interested in

Can some one help me set up an equation out of these word problems? PLEASE HELP!!!

Elanso [62]

1: 2/5=emails 3.6hrs=emails, 3.6=2/5 5-2=3 3.6•3=__hours of work

2. 294+83=$__

3. 3•x=hw 64/4=__•3=__hrs on math

4. Idk sorry

Sorry if some of these are wrong but I'm pretty sure there right.

5 0

2 years ago

Read 2 more answers

Please answer will give points

-Dominant- [34]

Answer:

step 2

Step-by-step explanation:

Given step 1

324π = π × 12² h

Then second step should read

324π = π × 144h ← 144 not 24 is the error

5 0

3 years ago

Jana joined a music club that offered her 5 CDs for a total of 3.00 if she agreed to purchase an additional 10 CDs for 15.00 eac

Hunter-Best [27]

Answer:

Average price, excluding taxes, for each CD is <u>10.20</u>.

Step-by-step explanation:

Given:

Cost of first 5 CDs, $C_1 = 3.00$

Cost of each additional CD = 15.00

Now, cost of 10 additional CDs is the product of cost of one CD and total number of additional CDs. Therefore,

Cost of 10 additional CDs is, $C_2=15.00\times 10=150.00$

Now, total CDs purchased by Jana are, $N=5+10=15$

Total cost of the 15 CDs purchased is given as:

$C_T=C_1+C_2=3.00+150.00=153.00$

Now, average price, excluding taxes, for each CD is given as:

$\textrm{Average price}=\frac{\textrm{Total cost of purchase}}{\textrm{Total number of CDs purchased}}\\\\\textrm{Average price}=\frac{C_T}{N}=\frac{153.00}{15}=10.20$

Therefore, the average price, excluding taxes, for each CD is 10.20.

7 0

3 years ago

the radius of a circular pond is 8 meters. Find it's area and circumference. Use 3.14 as an approximation for pi

Kaylis [27]

Answer:

area: 25.12

circumference will always be 3.14

Step-by-step explanation:

3 0

2 years ago

How do the points of a figure move in a translation?

SVETLANKA909090 [29]

The answer will be C

7 0

2 years ago