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3 years ago

Please help me! I will mark brainliest! Thanks!

Mathematics

2 answers:

Andreas93 [3]3 years ago

8 0

Answer: Group 12

Step-by-step explanation: The element is Mercury.

DochEvi [55]3 years ago

6 0

Answer:

Group 12

Step-by-step explanation:

You will most likely find in group 12

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How to do you solve c/3=30/5

Viktor [21]

Answer:

c=18

Step-by-step explanation:

To solve for c you need to do cross product property

You have to multiply diagonally

So 3*30= 90

5*c= 5c

90= 5c

Now its a one step equation

Divide 90 by 5 =18

c= 18

3 0

3 years ago

-3 < 4x -7 < 4 NEED HELP ASAP!!

TiliK225 [7]

Answer:

X=3

Step-by-step explanation:

6 0

4 years ago

1) Graph the following lines and using the graph determine several values of x for which the graph is positive (negative):

Aleksandr [31]

1) $y=-0.5x-2$

The graph of the above equation is attached in the attachment below.

For all the values from negative infinity to -4, the function is positive.

X ∈ (-∞,-4]

2) $y=-1.5x+3$

To find the x- intercept, plug y =0

$0=-1.5x+3$

$1.5x=3$

$x=2$

x intercept = (2,0)

To find the y- intercept, plug x=0

$y=-1.5(0)+3$

$y=3$

Y- intercept = ( 0,3)

3) $y=13-x$

Y- intercept = (0,13)

x- intercept = (13,0)

Area of triangle = $\frac{bh}{2}$

Area of triangle = $\frac{13\times13}{2}$

Area = $\frac{169}{2}$ sq unit.

4) The graphs of $y=-2x+7$ and $y=0.5x-5.5$ is attached in the attachment below.

The intersection point is ( 5,-3)

5) A = (-3,0)

B = (4,5)

C = (0,-4)

Slope of AB = $\frac{5-0)}{4-(-3)} =\frac{5}{7}$

Slope intercept of line $y=mx+b$

Where, m is the slope and b is the y- intercept.

Plugging point A and the slope in the y- intercept to find the value of b.

$0=\frac{5(-3)}{7} +b$

$b=\frac{15}{7}$

Equation of line AB: $y=\frac{5x}{7} +\frac{15}{7}$

Slope of BC = $\frac{-4-5}{0-4} =\frac{9}{4}$

Plug C = (0,-4)

$-4=0+b$

b=-4

equation of line BC= $y=\frac{9x}{4} -4$

Slope of line AC = $\frac{-4-0}{0--3} =\frac{-4}{3}$

Equation of line AC = $y=\frac{-4x}{3} -4$

Y intercept of AB = $(0,\frac{15}{7} )$

5 0

4 years ago

Read 2 more answers

If h(x) = 6 - X, what is the value of (h.n)(10)? -2 10 16 Help pls

Pavlova-9 [17]

Answer:

Step-by-step explanation:

h(x) = 6 - X

Let x = -10

h(-10) = 6- -10

= 6+ 10

= 16

3 0

3 years ago

Hello i need help plz

Nikolay [14]

Answer:

the only one in five years ago and I have a good time to do so, I was just wondering 8th, I am a bit

6 0

3 years ago