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irga5000 [103]
4 years ago
9

Please need help on this no clue

Mathematics
2 answers:
Mamont248 [21]4 years ago
8 0
5x+4y is less than or equal too -20

trapecia [35]4 years ago
7 0
The answer is D, happy graphing.
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3x-4y=1 and x=2y+1 using substitution
Aleksandr [31]

Answer:

x =-1

y =-1

Step-by-step explanation:

to solve this system of equation, using substiution method

3x-4y=1 ........................ equation 1

x=2y+1 ............................  equation 2

subbstitute for x into equation 1

3x-4y=1 ........................ equation 1

3(2y + 1) - 4y = 1

6y + 3 -4y = 1

2y + 3 = 1

collect the like terms

2y = 1- 3

2y= -2

divide both sides by  the coefficient of y which is y

2y/2 = -2/2

y = -1

put the value of y =-1 into equation 2

x=2y+1 ............................  equation 2

x = 2(-1) + 1

x = -2 + 1

x = -1

therefore x =-1 y = -1

3 0
4 years ago
Ryan placed $1,000 in a savings account which compounds interest annually at a rate of 2.5%. How much will he have in the accoun
Sonbull [250]

Answer:

1,050

Step-by-step explanation:

p=1000

R=2.5%

T=2 years

S.I=?

S.I=PRT÷100

S.I=$50

T.T Amount =P+S.I

Amount=$1,050

5 0
4 years ago
Abe is going to plant 5454 oak trees and 2727 pine trees. Abe would like to plant the trees in rows that all have the same numbe
xxTIMURxx [149]

You would need to find the GCF of 54 and 27.

Factors of 54:  1, 2, 3, 6, 9, 18, <u>27</u>, 54

Factors of 27:  1, 3, 9, <u>27</u>

so, the GCF is 27

6 0
3 years ago
Consider the original triangle and the reduction.
bulgar [2K]
<h3>answer</h3>

6 cm.

Explanation:

Since they've given use the area of the triangle, we can use the area formula to find the base of the triangle.

The formula to find the area of a triangle is:

a

=

1

2

h

b

→

(

h = height

,

b= base

)

We know:

a

=

24

h

=

8

So we can substitute them in and find

b

:

24

=

1

2

(

8

)

b

Multiply by sides by 2 and then divide:

24

×

2

=

1

2

(

8

)

b

×

2

48

=

8

b

6

=

b

The base of the triangle is

6 cm.

ur welcome ♥️♥️

3 0
3 years ago
Mike practices the cello every 5 days and the piano every 13 days. Mike practiced both the cello and the piano today. How many d
Rus_ich [418]

Answer:

65 days.

Step-by-step explanation:

because 13 multiplied 5 is 65 and 5 multiplied by 13 is also 65.

7 0
3 years ago
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