3 years ago

3 power 1+x + 3 power 1-x = 9

Mathematics

1 answer:

Rus_ich [418]3 years ago

6 0

I have no clue I just need to answer some questions before I can ask my own again lol

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Make x the subject of the following: b = x - 5

nevsk [136]

B=x-5
To get x on its own you have to add 5 to both sides. This gives you:
b+5=x
or
x=b+5

8 0

3 years ago

Solve the system: 2x+6y=36 x+4y=20

Assoli18 [71]

Let's solve this problem step-by-step

Let's set:

2x + 6y = 36 -- equation 1

x + 4y = 20 -- equation 2

(equation 2) * 2

2x + 8y = 40 -- equation 3

(equation 3) - (equation 1)

2y = 4

y = 2 -- equation 4

Plug (equation 4)'s value of y into (equation 2)

x + 4(2) = 20

x = 20 - 8

x = 12

Thus x = 12 and y = 2

Let's check, by substituting these values

$2x + 6y = 36\\2(12)+6(2) = 36\\24+12=36\\36=36\\\\x+4y=20\\12+4(2)=20\\12+8=20\\20=20$

Answer: x = 12 and y = 2

Hope that helps!

5 0

2 years ago

Herbert goes to the bookstore. He buys 2 books that cost $11 each and 4 books that are on clearance for $9 each. He also buys a

VMariaS [17]

If your question is will he have enough money, the answer is no he will not.

3 0

3 years ago

Read 2 more answers

Sam divided a rectangle into 8 congruent

VMariaS [17]

Answer:

40cm²

Step-by-step explanation:

pretty sure bc there are 8 equal 5 cm² pieces meaning you multiply by 8 for the answer. 5•8=40. I think rofl

3 0

2 years ago

PLZ HELP I WILL MARK BRAINLEST IF CORRECT

Nataly_w [17]

they are equal or congruent because if you look at it they both are right triangles

4 0

3 years ago