4 years ago

I'd love some help!

Mathematics

1 answer:

Alborosie4 years ago

6 0

The first graph is y = (1/4)^x
The second graph is y = 4^x
The third graph is y = (1/2)^x
The fourth graph is y = 2^x

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What mistake did this student make?

Novay_Z [31]

X=-2 not 2.

EXPLANATION:

x-2y=12
-3x+y=-1
x-2y=12
2(-3x+y)=-1
x-2y=12
-6x+2y=-2
-5x=10
5x/-5=10/-5
x=-2

7 0

2 years ago

I need help solving these equations....

Harlamova29_29 [7]

6 is easy
7. never divide by a fraction, flip ot upside down and multiply, so multiply by 5 on both sides
8. subtract 3.45 on both sides
9. the answer is just 1

7 0

3 years ago

The perimeter of a rectangle is found by using the formula P = 2l + 2w, where P is the perimeter, l is the length and w is the w

velikii [3]

Answer:

#1: 11 cm

#2: 16.5 in

#3: 2.5 feet

Step-by-step explanation:

$P=2l+2w$ Solve for width by substracting 2l on both sides to isolate 2w

$P-2l=2w$

$2w=P-2l$

Replace.

$2w=26-2(2)\\2w=26-4\\2w=22\\w=\frac{22}{2}\\ w=11cm$

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

$P=2l+2w$

$P=2(3.5)+2(4.75)\\P =7+9.5\\P=16.5in$

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

$P=2l+2w$

Solve for l

$2l=P-2w\\2l=7-2(1)\\2l=7-2\\2l=5\\l=\frac{5}{2}\\ l=2.5feet$

5 0

4 years ago

un supermercado ha comprado docientas cinquenta bolsas de naranjas de cinco kilos de trecientos ochenta euros y las pone a la ve

nasty-shy [4]

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Step-by-step explanation:

5 0

3 years ago

Do i need to reverse the inequality symbol when i add the same positive number to or subtract the same positive number from both

stira [4]

No, You only reverse the inequality symbol when you divide by a negative number.

6 0

3 years ago