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3 years ago

Have this done correctly for brainliest

Mathematics

2 answers:

Levart [38]3 years ago

6 0

Answer:

4) y=7-2x

6) 20x+5y=15

5(4x+y)=15

4x+y=15/5

4x+y=3

y=3-4x

8) 6x+8y=-6

2(3x+4y)=-6

3x+4y=-3

y=(-3-3x)/4

10) 16x+9=9y -2x

16x+2x=9y+9

18x=9y+9

18x=9(y+1)

2x=y +1

y=2x-1

Step-by-step explanation:

this is the correct answer

OlgaM077 [116]3 years ago

3 0

4.)y=-2x+7
6.)y=-4x+3
8.)y=3/4x+3/4
10.)y=2x+1
12.)y=16x-12

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Let C = C1 + C2 where C1 is the quarter circle x^2+y^2=4, z=0,from (0,2,0) to (2,0,0), and where C2 is the line segment from (2,

trapecia [35]

Not much can be done without knowing what $\mathbf F(x,y,z)$ is, but at the least we can set up the integral.

First parameterize the pieces of the contour:

$C_1:\mathbf r_1(t_1)=(2\sin t_1,2\cos t_1,0)$
$C_2:\mathbf r_2(t_2)=(1-t_2)(2,0,0)+t_2(3,3,3)=(2+t_2, 3t_2, 3t_2)$

where $0\le t_1\le\dfrac\pi2$ and $0\le t_2\le1$ . You have

$\mathrm d\mathbf r_1=(2\cos t_1,-2\sin t_1,0)\,\mathrm dt_1$
$\mathrm d\mathbf r_2=(1,3,3)\,\mathrm dt_2$

and so the work is given by the integral

$\displaystyle\int_C\mathbf F(x,y,z)\cdot\mathrm d\mathbf r$
$=\displaystyle\int_0^{\pi/2}\mathbf F(2\sin t_1,2\cos t_1,0)\cdot(2\cos t_1,-2\sin t_1,0)\,\mathrm dt_1$
${}\displaystyle\,\,\,\,\,\,\,\,+\int_0^1\mathbf F(2+t_2,3t_2,3t_2)\cdot(1,3,3)\,\mathrm dt_2$

5 0

3 years ago

Math help please please

Vika [28.1K]

Answer:

3(3x+1) (2x-1)

Step-by-step explanation:

18x^2 -3x-3

Factor out a 3

3(6x^2 -x-1)

3(3x+1) (2x-1)

6 0

3 years ago

HELP please this is due soon

jeka94

Answer:

Step-by-step explanation:

Side Opposite to ∠x is called YZ

The side Opposite to ∠y is called XZ (that's the hypotenuse of the triangle)

Side Opposite to ∠Z is XY

6 0

2 years ago

Read 2 more answers

Suppose that IQ scores have a bell-shaped distribution with a mean of

Svetllana [295]

Answer:

68 %

Step-by-step explanation:

The Empirical rule formula states that:

• 68% of data falls within 1 standard deviation from the mean - that means between μ - σ and μ + σ.

• 95% of data falls within 2 standard deviations from the mean - between μ – 2σ and μ + 2σ.

• 99.7% of data falls within 3 standard deviations from the mean - between μ - 3σ and μ + 3σ.

Mean of 96 and a Standard deviation of 17

Applying , the first empirical rule for 1 standard deviation from the mean, we have:

μ - σ

96 - 17

= 79

μ + σ

96 + 17

= 113

Therefore, the percentage of IQ scores that are between 79 and 113 is 68%

6 0

3 years ago

A bag contains 5 blue balls, 4 red balls, and 3 orange balls. If a ball is picked from the bag at random, what is the probabilit

uranmaximum [27]

Add up all 3 colors first
5 + 4 + 3 = 12
5 blue balls
5 over 12

4 0

3 years ago

Have this done correctly for brainliest​

Have this done correctly for brainliest