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3 years ago

Jim want to 16 laps in 40 minutes while Jim walked 30 laps and hour and 15 minutes who is the faster Walker

Mathematics

1 answer:

Elena L [17]3 years ago

3 0

Jim the 30 laps one in 15 minutes

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There is a line whose slope is 7 and whose y-intercept is 9. What is its equation in slope-intercept form?

Alex73 [517]

Answer:

Y=7x+9

Step-by-step explanation:

Y=mx + b

b= y-intercept

m=slope

Substitute:

Y=7x+9

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3 years ago

On a linear X temperature scale, water freezes at −115.0°X and boils at 325.0°X. On a linear Y temperature scale, water freezes

belka [17]

Answer:

The current temperature on the X scale is 1150 °X.

Step-by-step explanation:

Let is determine first the ratio of change in X linear temperature scale to change in Y linear temperature scale:

$r = \frac{\Delta T_{X}}{\Delta T_{Y}}$

$r = \frac{325\,^{\circ}X-(-115\,^{\circ}X)}{-25\,^{\circ}Y - (-65.00\,^{\circ}Y)}$

$r = 11\,\frac{^{\circ}X}{^{\circ}Y}$

The difference between current temperature in Y linear scale with respect to freezing point is:

$\Delta T_{Y} = 50\,^{\circ}Y - (-65\,^{\circ}Y)$

$\Delta T_{Y} = 115\,^{\circ}Y$

The change in X linear scale is:

$\Delta T_{X} = r\cdot \Delta T_{Y}$

$\Delta T_{X} = \left(11\,\frac{^{\circ}X}{^{\circ}Y} \right)\cdot (115\,^{\circ}Y)$

$\Delta T_{X} = 1265\,^{\circ}X$

Lastly, the current temperature on the X scale is:

$T_{X} = -115\,^{\circ}X + 1265\,^{\circ}X$

$T_{X} = 1150\,^{\circ}X$

The current temperature on the X scale is 1150 °X.

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3 years ago

Find the length of the third side to the nearest tenth.

Aliun [14]

Answer:

5.3

Step-by-step explanation:

You use the Pythagoras theorem which is a^2+b^2=c^2.

Since you're solving for a side length that's not the hypotenuse you will manipulate the equation to c^2-a^2=b^2. From here you just plug in numbers.

8^2 - 6^2 = b^2

64 - 36 = b^2

b = sqrt(28)

b = 5.2915.... = 5.3

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3 years ago

The radius of the base of a cylinder is 27 cm and it’s height is 33cm. Find the surface area of the cylinder in terms of pi.

Dahasolnce [82]

Answer:

10178.76

Step-by-step explanation:

use formula:-2πrh+2πr^2

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3 years ago

Which pair of triangles are congruent by ASA ?

Eddi Din [679]

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3 years ago