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Lubov Fominskaja [6]

3 years ago

13

Is 6(4x-5) equivalent to 3+22x-33-2x?

1 answer:

astraxan [27]3 years ago

4 0

Answer:

yes

Step-by-step explanation:

3+-33=30

22x- - -2x=24x

so yes

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Add the integers.<br> -6 + (-4) =( ?<br> B-2<br> C 2<br> D 10

lina2011 [118]

Answer:
-6 + -4 = -10

3 0

3 years ago

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You decide to enter in a rowing competition. To train, you go to the boat house and begin rolling down stream. You row for the s

fredd [130]

Answer:

Time spent rowing down stream $=100\ seconds$

Speed of boat in still water $=14\ ms^{-1}$

Step-by-step explanation:

Let speed of boat in still water be $= x\ ms^{-1}$

Speed of current $= 10\ ms^{-1}$

Speed of boat down stream = $\textrm{Speed of boat in still water +Speed of current}= (x+10)\ ms^{-1}$

Distance rowed down stream = 2400 m

Time spent rowing down stream = $\frac{Distance}{Speed}=\frac{2400}{x+10}\ s$ = $\frac{Distance}{Speed}=\frac{2400}{x+10}\ s$

Speed of boat up stream = $\textrm{Speed of boat in still water -Speed of current}= (x-10)\ ms^{-1}$

Distance rowed up stream = $\frac{1}{6} \textrm{ of distance rowed downstream}=\frac{1}{6}\times 2400 = 400\ m$

Time spent rowing up stream = $\frac{Distance}{Speed}=\frac{400}{x-10}\ s$

We know that,

$\textrm{Time spent rowing down stream =Time spent rowing up stream}$

So,

$\frac{2400}{x+10}=\frac{400}{x-10}$

Cross multiplying

$2400(x-10)=400(x+10)$

Dividing both sides by $400$

$\frac{2400(x-10)}{400}=\frac{400(x+10)}{400}$

$6(x-10)=x+10$

$6x-60=x+10$

Adding 60 to both sides.

$6x-60+60=x+10+60$

$6x=x+70$

Subtracting both sides by $x$

$6x-x=x+70-x$

$5x=70$

Dividing both sides by 5.

$\frac{5x}{5}=\frac{70}{5}$

∴ $x=14$

Speed of boat in still water $=14\ ms^-1$

Time spent rowing down stream = $\frac{2400}{14+10}=\frac{2400}{24}=100\ s$

3 0

2 years ago

A basketball player made 40% of the shots she attempted. If she made 32 baskets, how many shots did she attemp A.32 B.40 C.64 D.

dybincka [34]

D 80
32/40 *100
Precent proportions
32/x = 40/100
Cross multiply

6 0

3 years ago

36 pictures for $ or 24 pictures for $5

Oksi-84 [34.3K]

Answer:

I think it is 24 cus it's more bigger and cooler and hotter and shorter and butter

4 0

2 years ago

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Which ratio is equivalent to 1 : 5?

zhenek [66]

Answer:

2:10

Step-by-step explanation:

multiply both numbers by the same number(ie. 2,3,4) and the rotio will still be the same

3 0

2 years ago

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