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3 years ago

Can you please help?

Mathematics

2 answers:

sashaice [31]3 years ago

7 0

I’m sorry if it’s wrong but it’s

tigry1 [53]3 years ago

5 0

Step-by-step explanation:

f/p = p(1+i)^n

p= 2500

i=0.03 =3%

n=4

2500(1 + 0.03)^4

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A crate of mass 5 Kg is pulled directly up a rough slope, of inclination 10 degrees, by a constant force of magnitude 20N, actin

wlad13 [49]

The 20 N force is makes an angle of 20° relative to the incline. Then the work performed by this force is

(20 N) (3 m) cos(20°) ≈ 56.4 J

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3 years ago

"a guest orders a drink that contains 1½ ounces of 80-proof vodka and 12 ounces of beer. approximately how many drinks does this

frosja888 [35]

A guest orders a drink = <span>1½ ounces of 80-proof vodka and 12 ounces of beer
it means it contains 2 drinks.
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7 0

3 years ago

Read 2 more answers

A circle has a radius of 4/9 units and is centered at (-6.2,5.8)

Lina20 [59]

Answer:

see explanation

Step-by-step explanation:

the equation of a circle in standard form is

(x - h)² + (y - k)² = r²

where (h. k) are the coordinates of the centre and r is the radius

here (h, k ) = (- 6.2, 5.8 ) and r = $\frac{4}{9}$ , hence

(x + 6.2)² + (y - 5.8)² = ( $\frac{4}{9}$ )²

(x + 6.2)² + (y - 5.8)² = $\frac{16}{81}$

8 0

3 years ago

Solve 12x = 4(x + 5)

evablogger [386]

12x=4(x+5) (multiplying 4 by each argument in the parenhesis)
12x=4x+20 /-4x both sides
8x=20 /:8 divide both sides by 8
$x= \frac{20}{8}= 2 \frac{4}{8}=2.5$

15x-3(3x+4)=6 (-3 times each argument in the parenthesis)
15x-9x-12=6
6x-12=6 /+12 both sides
6x=18 /:6 divide both sides by 6
x=3

3x-5x+10=36
-2x+10=36 /-10 both sides
-2x=26 /:(-2) divide both sides by -2
x=-13

2(x+3)=x+10
2x+6=x+10 /-x
x+6=10 /-6
x=4

5 0

3 years ago

IQ scores for adults age 20 to 34 years are normally distributed according to N(120, 20). In what range does the middle 68% of p

Ilya [14]

The required interval of the given normal distribution using the empirical rule is <u>[100, 140]</u>.

The empirical rule formula (also known as a 68 95 99 rule formula) uses data from a normal distribution to determine the first, second, and third standard deviations, which, respectively, differ from the mean value by 68%, 95%, and 99%. Additionally, it shows that 99.9% of the data fall inside the third standard deviation range (either above or below the mean value). The empirical rule formula is described below with cases that have been resolved.

In the question, we are given that IQ scores for adults aged 20 to 34 years are normally distributed according to N(120, 20), and are asked for the range in which the middle 68% of people in this group score on the test.

N(120, 20) signifies a normal distribution with mean, μ = 120, and the standard deviation, σ = 20.

By the empirical formula, 68% of the data lies within one standard deviation from the mean.

Thus, the required interval is [μ - σ, μ + σ] = [120 - 20, 120 + 20] = [100, 140].

Learn more about the empirical rule at

brainly.com/question/10093236

#SPJ4

6 0

1 year ago