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2 years ago

A board is 3.5 m long. Four pieces, each.4 m long, are cut off. How much is left?

Mathematics

1 answer:

lys-0071 [83]2 years ago

8 0

Answer:

1.9 m

Step-by-step explanation:

3.5 - (4*0.4)

3.5 - 1.6 = 1.9

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Find the sum of the arithmetic series for which a_1 = 7, n = 31, and a_n = 127.

uranmaximum [27]

Answer: 2077

There are 31 terms.

S₃₁ = 31(a₁+a₃₁)/2 = 31(7+127)/2 = 2077

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2 years ago

To the nearest foot, what is the radius of the Ferris wheel if you traveled 157 feet? feet

Fittoniya [83]

Answer:

50 feet

Step-by-step explanation:

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3 years ago

Read 2 more answers

Does anyone know how to do these maths question???

Dmitry_Shevchenko [17]

Answer:

Part 1) $f(g(x))=3(x^2)+2$

Part 2) $g(f(5))=289$

Step-by-step explanation:

we know that

A composite function is a function that depends on another function. A composite function is created when one function is substituted into another function

we have

$f(x)=3x+2$

$g(x)=x^{2}$

Part 1) Determine f(g(x))

To find f(g(x)) substitute the function g(x) as the variable in function f(x)

$f(g(x))=3(x^2)+2$

Part 2) Determine g(f(x))

To find g(f(x)) substitute the function f(x) as the variable in function g(x)

$g(f(x))=(3x+2)^2$

For x=5

$g(f(5))=(3(5)+2)^2$

$g(f(5))=289$

3 0

2 years ago

if a sample size 40 is drawn from the population that has mean 276 and a variance of 81, what is the probability that the mean o

lapo4ka [179]

Answer:

The probability is 0.017429

Step-by-step explanation:

We start by calculating the z-score

Mathematically;

z-score = (x-mean)/SD/√n

In this case;

x = 273

mean = 276

SD = √(variance) = √81 = 9

n = 40

Substituting these values into the z-score formula, we have that;

z = (273-276)/9/√40

z = -2.11

So we proceed to get the probability

the probability in this case is;

P( z < -2.11)

We can use the normal distribution table for this

Our answer will be

P( z < -2.11) = 0.017429

4 0

2 years ago

3 divided by the sum of x and 9

Leto [7]

Answer:3/9

Step-by-step explanation:

5 0

2 years ago

A board is 3.5 m long. Four pieces, each.4 m long, are cut off. How much is left?​

A board is 3.5 m long. Four pieces, each.4 m long, are cut off. How much is left?