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2 years ago

5

Hey! I would really love it if someone could help me

1 answer:

Umnica [9.8K]2 years ago

4 0

Alrigth and B....

I think??????????? If I get it wrong im sorry ;-;

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X+2=9 into a word problem

Stolb23 [73]

Robin has to go shopping for her brother's birthday.

She already bought "x" presents for him.

The next day, Robin bought "2" more presents for him just in time for his birthday.

When she got home and celebrated his birthday, her beother opened, in total, "9" presents.

--- What is the number of presents that Robin had originally purchased? ---

6 0

3 years ago

Find equation of the line passing through(0,-3),which has a gradient of 2

WINSTONCH [101]

Answer:

y = 2x - 3

Step-by-step explanation:

y - - 3 = 2(x-0)

y + 3 = 2x

y = 2x -3

7 0

2 years ago

A ferry departs from a port along the Sands River at 10:00 am. The ferry travels at a speed of 15 mph in still water and returns

jek_recluse [69]

Answer:

Speed of river's current = 5 mph

Step-by-step explanation:

Let 'd' be the distance covered

Let x be the speed of the rivers current

Speed upstream = 15-x

speed downstream = 15+x

Time = distance / speed

time upstream = $\frac{d}{15-x}$

time downstream = $\frac{d}{15+x}$

the ferry trip upstream takes twice as long as its return trip downstream

$\frac{d}{15-x}$ = $\frac{2d}{15+x}$

divide both sides by d

$\frac{1}{15-x}$ = $\frac{2}{15+x}$

cross multiply

$15+x= 2(15-x)$

$15+x= 30-2x$

Add 2x on both sideds

$15+3x= 30$

subtract 15 from both sides and divide by 3

$3x=15$

x=5

Speed of river's current = 5 mph

8 0

3 years ago

The perimeter of the rectangular pool is 80 feet.The length of the pool is 10 feet more than twice of the width.Find the length

AveGali [126]

Width= 10
Length= 30

Explanation: photo

7 0

2 years ago

Evaluate<br> 2^9 over 2^5

s2008m [1.1K]

Answer:

2^4 or 16

Step-by-step explanation:

We know that a^b / a^c = a^(b-c)

2^9 / 2^5

2^(9-5)

2^4 or 16

8 0

2 years ago

Read 2 more answers