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2 years ago

What is the x coordinate of the solution to the system of equations?

Mathematics

1 answer:

Romashka [77]2 years ago

7 0

The answer is 2.
3x+2y=3
2x-2y=7
solve both the equations
3x+2y=3
+2x-2y=7
5x=10
so we get
x=2

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8×6+(12-4)÷2 Options: 58, 52, 56, or 28

Virty [35]

Answer: 52

Step-by-step explanation:

8x6+(12-4)÷2

Parenthesis' first

8x6+8÷2

multiplication next

48+8÷2

Division next

48+4

52

6 0

2 years ago

Compute the difference quotient, StartFraction f (x plus h )minus f (x )Over h EndFraction f(x+h)−f(x) h, for the function f (

lawyer [7]

Answer:

The difference quotient for $f(x)=3x^2$ is $3 h + 6 x$ .

Step-by-step explanation:

The difference quotient is a formula that computes the slope of the secant line through two points on the graph of f. These are the points with x-coordinates x and x + h. The difference quotient is used in the definition the derivative and it is given by

$\frac{f(x+h)-f(x)}{h}$

So, for the function $f(x)=3x^2$ the difference quotient is:

To find $f(x+h)$ , plug $x+h$ instead of $x$

$f\left(x+h\right)=3 \left(h + x\right)^{2}$

Finally,

$\frac{f\left(x+h\right)-f\left(x\right)}{h}=\frac{\left(3 \left(h + x\right)^{2}\right)-\left(3 x^{2}\right)}{h}$

$\frac{3\left(\left(h+x\right)^2-x^2\right)}{h} \\\\\frac{3(h^2+2hx+x^2-x^2)}{h} \\\\\frac{3h\left(h+2x\right)}{h}\\\\3h+6x$

The difference quotient for $f(x)=3x^2$ is $3 h + 6 x$ .

4 0

2 years ago

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Alexxx [7]

Answer:

Donna-71

Martina-62

Martina's sample

It has the smaller mean

Step-by-step explanation:

I apologize if this answer is incorrect but I think this is right.

6 0

2 years ago

In another survey, Jane found that 25% of the total number of teenagers surveyed like sandwiches. If 50 teenagers like sandwiche

34kurt

Set up a proportion: 25/100 = 50/n where n = # of teens surveyed
Simplify fraction: 1/4 = 50/n
Cross multiply: n = 200
So 200 teens were surveyed.

7 0

2 years ago

Write as a decimal fraction of a cm (a) 5 mm (b) 8mm

lys-0071 [83]

1 mm = 0.1 cm

(a) 5 mm

5 × 0.1 = 0.5

Fraction :- 5/0.5
5 ÷ 0.5 =10
Decimal:- 10

(b) 8 mm

8 × 0.1 = 0.8

Fraction:- 8/0.8
8 ÷ 0.8 = 10
Decimal:- 10

8 0

2 years ago

Read 2 more answers