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3 years ago

Which description best describes the solution to the following system of equations? (20 points)

Mathematics

1 answer:

Fynjy0 [20]3 years ago

6 0

Answer:

There will be 24 millimeters in 1/6 of an hour

Step-by-step explanation: because there is an mathematical expression

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A check is _____.

torisob [31]

Answer:

Step-by-step explanation:

A check is an I.O.U. or a promissory note.

3 0

3 years ago

Read 2 more answers

6. Which of the following is a unit of volume?<br> liter<br> foot<br> square meter<br> milligram

Ostrovityanka [42]

liter

its pretty easyyyyyyyyyy

volume is the measurement of how much space something takes

4 0

3 years ago

Given k // l, what can you conclude about these triangles? Check all that apply.

olasank [31]

Answer:

A C E

Step-by-step explanation:

it would be A C E because the corresponding angles are similar, angles 5 and 3 are both alternate exterior angles, the following verticals angles(1 and 4) are equivalent to each other. so yeah, its NOT ABC.

8 0

4 years ago

Read 2 more answers

For a sample of eight bears, researchers measured the distances around the bears' chests and weighed the bears. Minitab was us

ExtremeBDS [4]

Answer:

There is a linear correlation between chest size and weight,0.8482

Step-by-step explanation:

Given that for a sample of eight bears, researchers measured the distances around the bears' chests and weighed the bears.

the value of the linear correlation coefficient is r = 0.921.

i.e. there is a strong positive correlation from the value of r.

$H_0: r=0\\H_1: r\neq 0$

(Two tailed test at 5% level for correlation coefficient)

Test statistic t = $\frac{r\sqrt{n-2 } }{\sqrt{1-r^2}} \\=5.791$

p value <0.00001

Since p is less than 0.05 we reject H0

a) There is a linear correlation between chest size andweight

b)-- R^2 = 0.8482 proportion of the variation in weight can be explainedby the linear relationship between weight and chest size

3 0

3 years ago

Please answer both questions and show all work with explanations :) thank you soo much...

torisob [31]

Answer:

1) 109 cm

2) 120 in²

Step-by-step explanation:

A rectangle is a quadrilateral with opposite sides the same length and four (4) right angles. The diagonal, together with two adjacent sides, forms a right triangle. The relationship between side lengths and the diagonal length is given by the Pythagorean theorem. If sides are "a" and "b" and the diagonal is "c", that theorem tells you ...

... c² = a² + b²

1) c² = (60 cm)² + (91 cm)² = 11881 cm²

... c = √11881 cm = 109 cm

2) The perimeter is double the sum of adjacent side lengths, so ...

... 2(a+b) = 46 in

... a + b = 23 in . . . . . divide by 2

The Pythagorean theorem tells you

... a² + b² = (17 in)²

Squaring the equation from the perimeter relation gives ...

... (a + b)² = (23 in)² = a² + 2ab + b²

Subtracting a² + b², we have

... (a² +2ab +b²) - (a² + b²) = (23 in)² -(17 in)²

... 2ab = (529 -289) in² = 240 in² . . . . . simplify

... 240 in²/2 = ab = 120 in² . . . . . area is the product of length and width

_____

We could solve the two equations for a and b to find that there are two possible solutions: (a, b) = (8, 15) or (15, 8). Either way, ab = 8·15 = 120.

7 0

3 years ago