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netineya [11]
3 years ago
5

Solve the proportion x/12.6=45/63

Mathematics
2 answers:
NNADVOKAT [17]3 years ago
5 0

Answer:

x = 9

Step-by-step explanation:

solve using cross multiplication

63(x) = 45(12.6)

63x = 567

x = 9

Shalnov [3]3 years ago
3 0

Answer:

x=9

Step-by-step explanation:

x/12.6=45/63

We can solve using cross products

x * 63 = 45*12.3

Divide each side by 63

x = 45*12.6/63

x = 9

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No links please
Alja [10]
Answer: A 40 feet

Explanation:
If a building is 380 feet tall and the elevator has to descend 420 feet to get to the underground parking garage. So 420 - 380 to remove the height of the building from the equation. This would give us 40 feet underground left until the elevator reaches its desired destination.
8 0
2 years ago
A lake has a small patch of lily pads and every day the patch grows to double its size. It takes 32 days for the patch to cover
S_A_V [24]

Answer:

<em>It took 31 days for the patch to cover half the lake</em>

<em></em>

Step-by-step explanation:

The patch grows to double its size everyday

the patch completely covers the lake in 32 days

Since the patch doubles itself everyday, this means that the previous day before the 32nd day, the lake was just half covered.

Therefore, the the patch covered half the lake on the 31st day, i.e <em>it took 31 days for the patch to cover half the lake</em>

<em></em>

6 0
3 years ago
Sandra throws an object into the air with an initial vertical velocity of 38 feet per second, from a platform that is 30 feet ab
Blababa [14]
<span>To solve it, use the quadratic formula with (½)(-32.174 ft/s²) = a, 38 ft/s = b, and 30 ft = c. There are two answers; the only positive answer is t = 2.986 s </span>
4 0
3 years ago
Read 2 more answers
Help plz.Will give Brainlist. .................
gavmur [86]

Answer:

16f/h

+ 112/h

Step-by-step explanation:

thats is I just get it a week ago on a test

6 0
2 years ago
For which product or quotient is this expression the simplest form? (image attached)! please help :((
mars1129 [50]

Answer:

D

Step-by-step explanation:

For simplify the work we can start to factorise all the possibles expressions:

2x + 8.

8 is multiple of 2, so it can became

2(x+4)

x^2 - 16 this is a difference of two squares, so it can be rewritten as:

(x+4)(x-4)

x^2 + 8x + 16

we have to find two numbers whose sum is 8 and whose product is 16

the two number are 4 and 4

it becames:

(x+4)(x+4)

x+ 4 can‘t be simplified

if we look at the expression, we can find that x-4 appears at the numerator so

x^2 - 16 must be at numerator

but the second factor (x+4) doesn’t appear, so has been simplified. This situation can be possible only in the D option

in fact

(x+4)(x-4)/2(x+4) * (x+4)/(x+4)(x+4)

it became

(x+4)(x-4)/2 * 1/(x+4)(x+4)

(x-4)/2(x+4)

4 0
2 years ago
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