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2 years ago

3 and 1/3 + 4 and 5/7 =

Mathematics

1 answer:

klasskru [66]2 years ago

3 0

The answer is 8 and 1/21 in fixed fraction.

and decimal form it would be 8.047619

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A scientist wishes to estimate the mean breaking strength of a certain type of steel rod within 3.0 psi with 95% confidence. Bas

yaroslaw [1]

Answer:97 rods

Step-by-step explanation:

The number of steel rods for 95% confidence level

$n=\left ( \frac{Z_\frac{\alpha }{2}\times \hat{\sigma }}{E} \right )^2$

$Z_\frac{\alpha }{2}=1.96$

E=3

$\hat{\sigma }=15$

Substituting values

$n=\left ( \frac{1.96\times 15}{3}\right )^2$

$n=96.04\approx 97$

Thus 97 rods is tested

6 0

4 years ago

Which graph represents the solution set of this inequality? -3b - 15 > -24

Natasha2012 [34]

Answer:

REASON:

It's not B or D because it's increasing and it's not C because if -3 - 15 is -18 then I am pretty sure it's not going to be 3 because it's multiplying

3 0

3 years ago

Read 2 more answers

Y=3/5x+3 in standard form?

Marina86 [1]

Answer:

3x-5y=-15

Step-by-step explanation:

5 0

3 years ago

Show that the transformation T defined by T(x1, x2) = (2x1 - 3x2, X1+4, 5x2) is not linear.

erastovalidia [21]

Let u = (1, 0) and v = (0, 1). Then

T (u) = (2*1 - 3*0, 1 + 4, 5*0) = (2, 5, 0)

T (v) = (2*0 - 3*1, 0 + 4, 5*1) = (-3, 4, 5)

=> T (u) + T (v) = (-1, 9, 5)

but

T (u + v) = T (1, 1) = (2*1 - 3*1, 1 + 4, 5*1) = (-1, 5, 5)

=> T (u + v) ≠ T (u) + T (v)

which means T does not preserve addition, so it is not linear.

4 0

3 years ago

Classify each number below as a rational number or an irrational number. −17.6 , 81 , 15π , (square root −29), 13/14

gregori [183]

Answer:

Rational Numbers

−17.6 (-176/10)

13/14

Rational Numbers

15π

square root −29

Step-by-step explanation:

Rational Numbers are those numbers which can be written as Ratio of two numbers.

Irrationational Numbers are those which cannot be written as ratio of two numbers. such as recurring numbers.

e.g 0.26262626.........

4 0

3 years ago