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Colt1911 [192]
2 years ago
15

$470 is raised by 30%. What is the value after the increase?

Mathematics
2 answers:
o-na [289]2 years ago
8 0

Answer:

$141

Percentage increase = 30% × 470

New value = 470 + Percentage increase

New value =

470 + Percentage increase =

470 + (30% × 470) =

470 + 30% × 470 =

(1 + 30%) × 470 =

(100% + 30%) × 470 =

130% × 470 =

130 ÷ 100 × 470 =

130 × 470 ÷ 100 =

61,100 ÷ 100 =

611

Calculate absolute change (actual difference)

Absolute change (actual difference) =

New value - 470 =

611 - 470 =

141

alekssr [168]2 years ago
3 0
<h3>Answer:  $611</h3>

Work Shown:

30% of 470 = 0.30*470 = 141

The value goes up by $141, so the answer would be 470+141 = $611

A slight shortcut would be to say

1.30*470 = 611

This works because 1.30 = 1 + 0.30 = 100% + 30%

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The manager of a supermarket wants to obtain information about the proportion of customers who dislike a new policy on cashing c
alex41 [277]

Answer:

n = 61 costumers

Step-by-step explanation:

For calculating the number of costumers he should sample we use the next equation:

n = \frac{z_{1-\alpha/2}^{2}p(1-p)}{E^{2} }

                          Where E is the error that we are prepared to accept, in this  case E = 0.15

How we don't know the value of p, we can estimate it like p = 0.5

∝ = 1-0.98 = 0.02

1-∝/2 = 0.99

z_{0.99} = 2.33

n = \frac{(2.33^{2})(0.5)(1-0.5)}{0.15^{2} }

n = 60.32 costumers

n ≈ 61 costumers

4 0
3 years ago
How much is 8x124x8x9 please help
sattari [20]

Answer:

71424

Step-by-step explanation:

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Ulleksa [173]
16 kids and 1 adult
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0.3 ÷ 42 Will someone please help me with the method on how to do this it is very hard.
slamgirl [31]

The answer is 1/140

Work Shown

0.3 / 42

Convert and Rewrite

3/10 x 1/42

Reduce The Numbers With the greatest Common divisor 3

1/10 x 1/14

Multiply the fractions

1/140 or

AlTernative Form  0.007114285 , -1 over 140


I Hope This Help

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3 0
3 years ago
HELP ASAP//BRAINLEST+THANKS: Subj:gravity formula stuff
Y_Kistochka [10]

Answer:

6.46

Step-by-step explanation:

h(t) = (1/2)att^{2} + v0t + h0

Origin is at surface of water (h = 0), up is positive.

a = -g = -9.8 m/s^{2}

v0 = 25 m/s

h0 = 50 m

h(t) = -4.9t2 + 25t + 50

Find t when

7 = -4.9t^{2} + 25t + 50

4.9t^{2} - 25t - 43 = 0

t = [1/(2*4.9)] [25 ±√(25^{2} + 4*4.9*43)]

t = (0.102)(25 ± 38.312)

t > 0 ⇒ use only the positive square root

t = (0.102)(25 + 38.312) ≅ 6.46 s

It is 7m above the water at about 6.46 s

7 0
3 years ago
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