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3 years ago

It would help if someone answered this thank you.

Mathematics

1 answer:

borishaifa [10]3 years ago

6 0

Answer:

a. 30

b.Random Students

c.Unbiased

Step-by-step explanation:

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A trail mix is made by adding pecans that sell for 2.50 per pound to chocolate candies that sell for 1.00 per pound. How much of

Vera_Pavlovna [14]

Answer:

Should be used 28 pounds of pecans and 32 pounds of chocolate candies

Let

x -----> pounds of pecans used

y ----> pounds of chocolate candies used

we know that

-----> equation A

-----> -----> equation B

Solve the system of equations by graphing

Remember that the solution is the intersection point both graphs

Using a graphing tool

The solution is the point (28,32)

see the attached figure

therefore

Should be used 28 pounds of pecans and 32 pounds of chocolate candies

5 0

4 years ago

Let f= {(1,2),(2,3),(3,5),(4,7)}<br><br> What is f ⁻¹ ∘ f

bazaltina [42]

Test of a horizontal line.Suppose f is a function.F does not have an inverse if any horizontal line crosses the graph of f more than once.F does have an inverse if no horizontal line crosses the graph of f more than once

How do you calculate f's inverse?

Finding a Function's Inverse

Replace f(x) with y first, then.

Every x must be replaced with a y, and vice versa.

Solve the y-part of the equation from step two.

In place of y, write f1(x) f 1 (x).

Check that (ff1)(x)=x (f f f 1) (x) = x and (f1f)(x)=x (f f 1 f) (x) = x are both true to validate your work

f= {(1,2),(2,3),(3,5),(4,7)}

Dom(gof)=dom(f)={1,3,4}.

(gof)(1)=g{f(1)}=g(2)=3,

(gof)(3)=g{f(3)}=g(5)=1

(gof)(4)=g{f(4)}=g(1)

∴gof={(1,3),(3,1),(4,3)}.

To learn more about inverse functions refer

brainly.com/question/8665364

#SPJ13

8 0

1 year ago

Instructions: Find the equation of the line through point (2, -1) and

Kazeer [188]

Answer:

$y = -\frac{2}{5}x -\frac{1}{5}$

Step-by-step explanation:

Given

Passes through: $(2,-1)$

Parallel to: $2x + 5y = 15$

Required

First, calculate the slope of the parallel line

$2x + 5y = 15$

Make y the subject

$5y = 15 - 2x$

Divide through by 5

$y = 3 - \frac{2}{5}x$

$y =- \frac{2}{5}x+3$

An equation in slope intercept has the form:

$y = mx + b$

Where:

m = slope

$y = mx + b$

So:

$m = -\frac{2}{5}$

The required is parallel to $2x + 5y = 15$ .

This mean, the same slope

The equation is the calculated using:

$y - y_1 = m(x - x_2)$

This gives:

$y - (-1) = -\frac{2}{5}(x - 2)$

$y +1 = -\frac{2}{5}x +\frac{2}{5}*2$

$y +1 = -\frac{2}{5}x +\frac{4}{5}$

$y = -\frac{2}{5}x +\frac{4}{5}-1$

Take LCM

$y = -\frac{2}{5}x +\frac{4-5}{5}$

$y = -\frac{2}{5}x -\frac{1}{5}$

i.e.

$y = -2/3x -1/5$

3 0

3 years ago

.162q + .035c = 4<br> Solve for q and c and show work

liberstina [14]

Answer:

q = $\frac{5(-7c+800)}{162}$

c = $\frac{2(-81q + 2000)}{35}$

Step-by-step explanation:

First solve for q:

0.162q + 0.035c = 4

0.162q = 4 - 0.035c (move term to other side)

q = $\frac{4-0.035c}{0.162}$ (divide both sides by 0.162 to get it away from q)

q = $\frac{5(-7c+800)}{162}$ (simplify fraction)

Solve for c:

0.162q + 0.035c = 4

0.035c = 4 - 0.162q (move term to other side)

c = $\frac{4 - 0.162q}{0.035}$ (divide both sides by 0.035 to get it away from c)

c = $\frac{2(-81q + 2000)}{35}$ (simplify fraction)

7 0

3 years ago

Given that the federal and state biweekly deductions for a single person making $1,300 with zero withholding allowances working

Vadim26 [7]

Answer: C. $1071.30

Step-by-step explanation:

I got this answer by subtracting $174 and $54.70 because those are the federal and state biweekly deductions from her income of $1300.

5 0

3 years ago