1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Alexus [3.1K]
4 years ago
5

Solve this system by substitution. Y=-8x-23 Y=-5x-14

Mathematics
2 answers:
matrenka [14]4 years ago
7 0
set\ them\ equal\ to\ each\ other \\ -8x-23=-5x-14 \\ -3x-23=-14 \\ -3x=9 \\ x= \frac{9}{-3} \\ x=-3 \\  \\ plug\ in\ OG\ equation \\ y=-8x-23 \\ y=-8(-3)-23 \\ y=24-23 \\ y=1 \\  \\ \boxed {(-3,1)}
cupoosta [38]4 years ago
3 0
Y = -8x - 23
<u>y = -5x - 14</u>
2y = -13x - 37
<u>2y</u> = <u>-13x - 37</u>
 2            2
  y = 6 1/2x - 18 1/2
  6 1/2x - 18 1/2 = -5x - 14
  <u>    +5x                 +5x        </u>
 11 1/2x - 18 1/2 = -14
<u>              +18          +18</u>
               11 1/2x = 4
             <u>  11 1/2x</u> = <u>   4    </u><u>
</u>               11 1/2    11 1/2
                         x = 8/23
y = -5(8/23) - 14
y = -1 17/23 - 14
y= -15 17/23
(x, y) = (8/23, -15 17/23)

<u />
You might be interested in
Could you guys help me solve 9 I would appreciate it :)
Drupady [299]

Answer:

Step-by-step explanation:

12<18/3(-2)+12  turns into 12<18/-6+12

False

5 0
3 years ago
Help fast this for a test please
weqwewe [10]
The similarity statement would be that all three of them have the same sides
7 0
3 years ago
Kamran wins the big game lottery. He invests part of his winnings in treasury bonds promising a 5% annual return and he deposits
Ostrovityanka [42]

Answer:

Amount won by Kamran = $21,450

Step-by-step explanation:

This can be calculated using the following 3 steps:

Step 1: Calculation of the amount invested in treasury bonds

Since the limit to the duration of investment is not stated, the amount invested can be calculated using the formula for calculating the present value of a perpetuity as follows:

PV = P / r …………………………………. (1)

Where;

PV = Present value or the amount invested treasury bonds = ?

P = Annual return on his investments = $661.25

r = Annual rate of return = 5%, or 0.05

Substitute the values into equation (1), we have:

PV = $661.25 / 0.05 = $13,225

Step 2: Calculation of the amount deposited in the money market account

From Step 1 above, we have:

Amount invested treasury bonds = $13,225

Since he invests $5000 more in treasury bonds than he deposits in the money market account, the amount deposited in the money market account can be calculated as follows:

Amount deposited in the money market account = Amount invested treasury bonds - $5,000 = $13,225 - $5,000 = $8,225

Step 3: Calculation of the amount won by Kamran

Amount won by Kamran = Amount invested treasury bonds + Amount deposited in the money market account = $13,225 + $8,225 = $21,450

7 0
3 years ago
Let a, b, c, and d be real numbers with a, c 6= 0. Prove that the lines y = ax+b and y = cx + d have the same x-intercept if and
Monica [59]

Step-by-step explanation:

We have got the lines :

y=ax+b\\y=cx+d

Both lines intercept the x-axis in the point :

I = (i_{1} ,i_{2})

In all point from x-axis the y-component is equal to 0.

I=(i_{1},o)

We replace the I point in the lines equations:

0=a(i_{1})+b \\0=c(i_{1})+d

From the first equation :

0=a(i_{1})+b \\-b=a(i_{1})\\i_{1}=\frac{-b}{a}

From the second equation :

0=c(i_{1})+d\\ -d=c(i_{1})\\i_{1}=\frac{-d}{c}

Then i_{1}=i_{1}

Finally :

\frac{-b}{a}=\frac{-d}{c} \\\frac{b}{a}=\frac{d}{c} \\ad=bc

y = ax + b and y = cx + d have the same x-intercept ⇔ad=bc

8 0
3 years ago
Curt and Ian both ran a mile. Curt time was 8/9 of Ian time. Who ran faster?
Leona [35]

Curt because if his time was 8/9 of Ian's time then that means he ran the mile in a fraction of Ian's time, so he finished the mile quicker. Curt ran faster.

5 0
4 years ago
Read 2 more answers
Other questions:
  • Identify the vertical shift, maximum and minimum values of each function
    6·1 answer
  • ??? Really need help
    11·1 answer
  • A rectangle of length 10 units and width 5 units is shown. Inside this rectangle is another rectangle of length 9 units and widt
    8·2 answers
  • Suppose the linear cost function C(x) = 6x gives the cost for buying x items. If the items are sold in packages of 10, and no on
    11·2 answers
  • What is the length of a rectangle with width 10 in. and area 85 in^(2)
    13·1 answer
  • Find the value of x in <br>5x + 8 = - 7​
    9·2 answers
  • I need help in this algebra problem plz
    12·1 answer
  • all you need is in the photo please answer fast please helpppppp DON'T DO STEP BY STEP PUT ONLY THE ANSWER PLEASEEEEEEEEEEEEEEEE
    15·1 answer
  • mr. salmon is getting pool ready for summer. The pool liner had some holes in it, so he decides to replace it. In order to repla
    7·1 answer
  • Stevic delivers newspapers. He has already earned $36 delivering the Sunday paper and $12 delivering the Saturday paper. He earn
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!