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zavuch27 [327]
3 years ago
6

Can you plz help me I have hope for somebody to help me

Mathematics
1 answer:
zzz [600]3 years ago
6 0

Unit price of jeans = $22 => price of two pairs of jeans = 2*$22 = $44

unit price of t-shirts = $8

Money available = $120

Sara plans to buy two pairs of jeans, and as many t-shirts as possible (x) within the available budget of $120.

The constraint inequality is therefore

2*22+8x ≤ 120.................................(1)

If (1) is simplified, it becomes

44+8x ≤ 120

8x ≤ 120-44

x ≤ 76/8

x ≤ 9.5 => she can buy a maximum of 9 t-shirts.


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David bought three DVDs in for books for $40 at a yard sale and I bought one DVD and six books for $18 how much did each DVD and
grandymaker [24]

Answer: One DVD is $12 and one book is $1

Step-by-step explanation:

Let the DVD be d and the book be b.

Case 1:

3d + 4b = $40.......(1)

Case 2:

1d + 6b = $18........... (2)

In this equations above, I intend to eliminate variable d, so I'm going to multiply the coefficient of d in (1) to multiply (2)

3 × (1d + 6b = 18)

3d + 18b = 54........ .(3)

Then, subtract (1) from (3)

3d + 18b = 54

- ( 3d + 4b = 40)

3d - 3d + 18b - 4b = 54 - 40

0 + 14b = 14

b = 14/14

b = 1.

Then substitute 1 for b in (2)

1d + 6(1) = 18

d + 6 = 18

d = 18 - 6

d = 12.

(d,b) = (12,1)

4 0
3 years ago
Count to find the area. Tell if the area is exact or an estimate.<br> The exact is
muminat

Answer:

Step-by-step explanation:

There isn’t any numbers or pics to go by

7 0
3 years ago
SOMEONE PLS HELP WHAT DO I DO HERE
pav-90 [236]

Answer:

see below

Step-by-step explanation:

4 ^(3x-1)=3

Take the natural log of each side

ln(4 ^(3x-1))= ln (3)

We know that ln ( a^b) = b ln a

(3x-1) ln 4 = ln 3

Divide each side by ln 4

3x-1 = ln(3)/ (ln4)

Add 1 to each side

3x = ln(3)/ ln (4) +1

Divide by 3

x =1/3 [( ln 3)/ ln (4)] + 1/3

x = .792461

6 0
2 years ago
Someone help me pleaseee​
Liono4ka [1.6K]

Answer:

A.) 588329.896

B.) 274300

C.) 1657.18474

D.) 1.002

(All answers unrounded.)

Explanation:

I converted each unit to the unit used in the other number (E.g., for question A I converted tons to kilograms, and then finished solving.)

7 0
2 years ago
What is the equation when y=5x+4 is reflected over the x-axis, y-axis &amp; y=x?
tigry1 [53]

Answer:

A) y=-5x-4

B) y=-5x+4

C) y=\frac{x-4}{5}

Step-by-step explanation:

So we have the equation:

y=5x+4

Let's write this in function notation. Thus:

y=f(x)=5x+4

A)

To flip a function over the x-axis, multiply the function by -1. Thus:

f(x)=5x+4\\-(f(x))=-(5x+4)

Simplify:

-f(x)=-5x-4

B) To flip a function over the y-axis, change the variable x to -x. Thus:

f(x)=5x+4\\f(-x)=5(-x)+4

Simplify:

f(-x)=-5x+4

C) A reflection over the line y=x is synonymous with finding the inverse of the function.

To find the inverse, switch x and f(x) and solve for f(x):

f(x)=5x+4

Switch:

x=5f^{-1}(x)+4

Subtract 4 from both sides:

x-4=5f^{-1}(x)

Divide both sides by 5:

f^{-1}(x)=\frac{x-4}{5}

And we're done :)

7 0
3 years ago
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