All categories

3 years ago

Use substitution to solve the system of equations.. PLEASE ANSWER AND EXPLAIN..asap

Mathematics

2 answers:

Leya [2.2K]3 years ago

4 0

Answer:

the answer to number one is (13.3,2)

the answer to number two is (2,-2)

Step-by-step explanation:

Nataliya [291]3 years ago

4 0

1. -5+y=-3
3x-8y=24

5+2=-3
3x40/3 -8x2 =24

-3=-3
24=24
(x,y) = (40/3, 2)

2. -3x-4y=2
x+2y=-2

-3(-2-2y) -4y=2
y=2

x=-2-2x(-2)
x=2

(x,y) (2.-2)

-3x2-4x(-2) =2
2+2 x(-2) =-2
2=2
-2=-2
(2,-2)
hope this helps:)

You might be interested in

janell uses 66 beads for each necklace she makes. She bought a bag of 500 beads hpw many necklaces can she make.

svetoff [14.1K]

500/66= 7.6
Janell can make 7 bracelets

3 0

3 years ago

Write the equation of the line that passes through the given point and has the given slope:

Wewaii [24]

Answer:

$\displaystyle 4x - y = 21, -4x + y = -21, or\:y = 4x - 21$

Step-by-step explanation:

In this case, the y-intercept and rate of change [slope] are given to us, so just put it in Slope-Intercept Form:

$\displaystyle y = 4x - 21$

If you want it in Standard Form:

y = 4x - 21

- 4x - 4x

_________

$\displaystyle -4x + y = -21\:OR\:4x - y = 21$

I am joyous to assist you anytime.

3 0

3 years ago

Read 2 more answers

How do I solve 18-4K=-2 step by step

jek_recluse [69]

Answer:5

Step-by-step explanation: 18-4K = -2

-18 -18

-4K = -20

-4 -4

K=5

3 0

4 years ago

What "i" can be simplified to -1

Rudiy27

I=√-1
i²=(√-1)²=-1

the answer is i²

3 0

4 years ago

Read 2 more answers

The check-cashing store also makes one-month add-on interest loans at 7.8 percent discount interest per week. Thus if you borrow

masya89 [10]

Answer:

APR = 416%

EAR = 5370.60%

Step-by-step explanation:

Given:

Interest rate = 7.8% per week

Now,

In an year there are total 52 weeks

thus,

The APR (Annual percentage rate) = Interest rate × Total weeks in an year

APR = 8% × 52

APR = 416%

and, EAR ( Effective Annual Rate ) = ( 1 + r )ⁿ - 1

Here,

r is the interest rate per week

n is the total weeks in an year

thus,

EAR ( Effective Annual Rate ) = ( 1 + 8% )⁵² - 1

= ( 1 + 0.08 )⁵² - 1

= 53.7060

53.7060 × 100% = 5370.60%

5 0

3 years ago