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3 years ago

If the mass of a metal bar which is 3.25m long is 15 kg,find its mass per metre.

Mathematics

1 answer:

Law Incorporation [45]3 years ago

7 0

The answer is 4.61 :)

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Consider the figure below. I need need help with what’s the slope of TR is:

Keith_Richards [23]

Answer:

The slope of RT is: m = 1

Step-by-step explanation:

Given

R(-3, 1)

T(2, 6)

Determining the slope between (-3, 1) and (2, 6)

$\mathrm{Slope}=\frac{y_2-y_1}{x_2-x_1}$

$\left(x_1,\:y_1\right)=\left(-3,\:1\right),\:\left(x_2,\:y_2\right)=\left(2,\:6\right)$

$m=\frac{6-1}{2-\left(-3\right)}$

Refine

$m=1$

Therefore, the slope of RT is: m = 1

5 0

3 years ago

GUYSSSSS!!!! PLEASE I NEED HELP RIGHT NOWW!!! HELP PLEASE!

nikdorinn [45]

Answer:

$\angle ABC=20^{\circ}$

Step-by-step explanation:

Since each side of a line is 180 degrees, we can write the following system of equations:

$\begin{cases}2x+12y+x+2y=180,\\x+2y+8y-4x=180\end{cases},\\\begin{cases}3x+14y=180,\\-3x+10y=180\end{cases}$

Add both equations to solve for $y$ :

$24y=360,\\y=\frac{360}{24}=15$

Now substitute $y=15$ into $3x+14y=180$ to solve for $x$ :

$3x+14(15)=180,\\3x=-30,\\x=-10$

Finish by substituting both variables to solve for $\angle ABC$ :

$\angle ABC=x+2y,\\\angle ABC=-10+2(15),\\\angle ABC=-10+30=\boxed{20^{\circ}}$

7 0

3 years ago

You decide to go to a star gazing event there are 12 people in the group

hoa [83]

Answer:

whts the question??

Step-by-step explanation:

8 0

3 years ago

50 points! Please help me

Inga [223]

Answer:

x = 8

y = 14

Step-by-step explanation:

2x + 6 = 4x - 10 (Corresponding angles so they're equal)

2x - 4x = -10 - 6

-2x = -16

x = 8

2x + 6 + 13y - 24 = 180 (Supplementary angles so they add up to 180)

2(8) + 6 + 13y - 24 = 180

16 + 6 + 13y - 24 = 180

13y - 2 = 180

13y = 182

y = 14

6 0

3 years ago

WHAT IS THE REFERENCE ANGLE FOR 357 DEGREES

andre [41]

The reference of the angle would be 45 degrees

5 0

3 years ago