Ask question

Ask question

All categories

2 years ago

6

Is this true or false need answer asap

1 answer:

VLD [36.1K]2 years ago

3 0

Answer: True

Step-by-Step Explanation:

=> 2x + 3y = -7 (Eq. 1)
=> -x = 2y (Eq. 2)
=> x = 1, y = -3

Substitute values of ‘x’ and ‘y’ in Eq. 1 :-

=> 2x + 3y = -7
= 2(1) + 3(-3) = -7
= 2 + -9 = -7
=> -7 = -7
=> LHS = RHS

Therefore, it is a Solution.

You might be interested in

1000 was invested at 5.5% interest, compounded annually. After sometime the amount had grown to 1550. How long was the money inv

scZoUnD [109]

compound interest equation for annually compounded

$A=P(1+r)^t$

A=final amount

P=principal

r=rate in decimal

t=time in years

given that

A=1550

P=1000

r=5.5%=0.055

find t

$1550=1000(1+0.055)^t$

divide both sides by 1000

$1.55=1.055^t$

take ln of both sides

$ln(1.55)=ln(1.055^t)$

use ln rule $ln(a^b)=b(ln(a))$

$ln(1.55)=t(ln(1.055))$

divide both sides by ln(1.055)

$\frac{ln(1.55)}{ln(1.055)}=t$

using a calculator, we get that t=8.18544 yrs

so about 8.2yrs

4 0

3 years ago

29 is what percent of 20?

Vanyuwa [196]

29 percent = 29/100
So 29/100 x 20
= 5.8

4 0

3 years ago

Use distributive property to calculate the following.

sattari [20]

Answer:

Step-by-step explanation:

1. 2x + y

2. 48 + 60 = 108

3. 840 - 210 = 630

4 0

2 years ago

One hamburger and one coke cost $3.20. Three hamburgers and one coke cost $8.00. Find the cost of one hamburger.

Varvara68 [4.7K]

Answer:

$0.80

Step-by-step explanation:

-3 (1x + 1y = 3.2)

3x + 1y = 8

----------------

-3x - 3y = -9.6

+

3x + 1 y = 8

-------------------

0x -2y = -1.6

÷ -2

-----------------

y = 0.8

one hamburger costs $0.80

5 0

3 years ago

Read 2 more answers

Is -3/4 rational or irrational

vovangra [49]

Answer:

Rational

Step-by-step explanation:

The fraction -3/4 can be written as a ratio, and is a finite amount, making it rational.

7 0

3 years ago

Read 2 more answers