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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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To solve the equation 2x−3=3x−7 , Esin graphs the functions f(x)=2x−3 and g(x)=3x−7 on the same set of coordinate axes.

Alecsey [184]

We have that

f(x)=2x−3
g(x)=3x−7

2x-3=3x-7-------------> 3x-2x=-3+7-------> x=4
find the value of f(x) or g(x) for x=4
f(x)=2x−3 -------> f(4)=2*4-3------> f(4)=5
the solution is the point (4,5)

using a graph tool
see the attached figure

statement

case a) The solution of the equation cannot be found graphically. Esin should solve the equation algebraically.
this is not correct

case b) The solution of the equation is the y-intercept of the linear equations.
this is not correct

case c)The solution of the equation is the x-coordinate of the ordered pair where the graphs of the two functions intersect.
this is correct

case d) The solution of the equation is the y-coordinate of the ordered pair where the graphs of the two functions intersect
this is not correct

the answer is
case c) The solution of the equation is the x-coordinate of the ordered pair where the graphs of the two functions intersect.

8 0

3 years ago

A sum of $4200 was invested, part at 8% and the remainder at 11%. If $426.00 was earned in interest after one year, how much was

enot [183]

Answer:

$3000 was invested at 11%.

Step-by-step explanation:

The total interest was $426. This was comprised of interest earned at 8% (represented by e) and (separately) interest earned at 11% (represented by v).

Then e + v = $4200 total investment, and

i = $426 = e(0.08)(1 year) + v(0.11)(1 year)

We eliminate the variable e as follows: since e + v = $4200, e = $4200 - v. Thus,

i = $426 = e(0.08)(1 year) + v(0.11)(1 year) becomes:

i = $426 = ($4200 - v)(0.08)(1 year) + v(0.11)(1 year)

This is one equation in one unknown, the amount of $ invested at 11%.

Performing the indicated multiplications:

426 = 4200(0.08) - 0.08v + 0.11v. Simplifying this further, we get:

426 = 336 + 0.03v.

Then 90 = 0.03v, and v = 90 / 0.03 = $3000.

$3000 was invested at 11%.

6 0

2 years ago

Check my Geometry work?? Will give Brainliest

Travka [436]

Answer:

in the step-by-step

Step-by-step explanation:

okay one thing is that you labelled wrong since you have to label D', D", D'" (you just labelled with one for all of them)

a you reflected across the y-axis wrong

-it would be that D' (-2,6), E' (-2,3), F' (-5,3)

b you rotated correctly

this gets more confusing since you labelled the triangles wrong, but I hope this first part helps

3 0

3 years ago

Consider the graph of the function f(x) = 2(x + 3)2 + 2. Over which interval is the graph decreasing? (–∞, –3) (–∞, 2) (–3, ∞) (

SOVA2 [1]

Answer:

(–∞, –3)

Step-by-step explanation:

The function $f(x) = 2(x + 3) ^ 2 +2$ is a quadratic function of order 2 and positive coefficient.

This is in the form of the function $y = x^2$ , but it is displaced 3 units to the left of the x axis and two units up in the y axis. type of functions are decreasing from -∞ to its vertex and then they are increasing from the vertex to infinity.

Observe in the attached graph that this function has its vertex in the point (-3, 2) and is decreasing from -∞ to x = -3. Then it is increasing until ∞. Therefore the correct option is:

(-∞, -3)

4 0

3 years ago

Read 2 more answers

Triangle MNP is transformed according to the rule T(4,–1). What is the y-coordinate of M”?

koban [17]

T(4,-1) means move 4 units to the right and 1 unit down.

Based on the image, M(-3,4) ; N(-2,1) ; P(-4,2)

So,
M:
-3 move 4 units to the right becomes 1
4 move 1 unit down becomes 3
M'(1,3)

N
-2 move 4 units to the right becomes 2
1 move 1 unit down becomes 0
N"(2,0)

P
-4 move 4 units to the right becomes 0
2 move 1 unit down becomes 1
P''(0,1)

7 0

3 years ago

Read 2 more answers