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3 years ago

Help me please with this I will give brainliest

Mathematics

1 answer:

MAVERICK [17]3 years ago

8 0

Answer:

1. 18

2. 72

3. 90%

Step-by-step explanation:

For number 1

To find percentage you multiply the total number of kids with the percentage.

To do this you have to convert the percent into a decimal by moving the dot 2 times from its original location Ex. 20% = .20 as 20 would look like 20.00 in decimal form.

So .20 x 90 = 18

For number 2

Subtract 18 and 90 to find the remanding kids

For number 3

Divide 72 and 90. Make sure the lower number is being divided.

The answer you will get is .8 so move the decimal back two times because you are converting it to a percentage."

You will then get 80.00 as an answer then from there turn it to a percentage

80%

Hope this helps!

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3 years ago

Read 2 more answers

If AB= x+4, BC=2x-10, and AC=2x+1, then find the value for x

Yuri [45]

Answer:

$\boxed{x = 7}$

Step-by-step explanation:

Given:

AB = x + 4
BC = 2x – 10
AC = 2x + 1

We can illustrate this relationship as:

(2x + 1)

___↑___

| |

A — B — C

|____|___|

↓ ↓

(x + 4) (2x – 10)

_______________________________

When you are given an algebraic expression for the length of a segment, you can solve for that value by knowing that the sum of two segments AB + BC = AC.

Thus:

(x + 4) + (2x – 10) = (2x + 1)

[Regroup terms]

(x + 2x) + (4 – 10) = (2x + 1)

[Simplify]

(3x – 6) = (2x + 1)

[subtract 2x from both sides to isolate the variable]

(3x – 6) – 2x = (2x + 1) – 2x

[Regroup terms]

(3x – 2x) – 6 = (2x – 2x) + 1

x – 6 = 1

[Add 6 to both sides to isolate the constant]

x – 6 + 6 = 1 + 6

[Simplify]

x = 7

5 0

3 years ago

What is the Nth term to this sequence: 2.7, 5.4, 10.8, 21.6, 43.2

SpyIntel [72]

So the first term is 2.7
the second term is 5..4
the thrid term is 10.8
it seems to be doubleing

so the nth term
1th term=2.7
2th term=5.4
we know there must be a power of 2 in there that is influenced by which term it is so
2^n and something more

trial and error
so (1.35)(2^n))

the nth term is (1.35) times (2^n) or 1.35(2^n)

3 0

3 years ago

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notsponge [240]

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3 years ago

Usually I dont need help with questions but this one really has me stuck:

Basile [38]

Answer:

$31.491

Step-by-step explanation:

Price of the book=$34.99

Sale given=10%

Price of the book after sale=34.99-{(10/100)*34.99}

=34.99-3.499

=34.990-3.499

=$31.491

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3 years ago