All categories

3 years ago

31. Find the value of each variable.

Mathematics

1 answer:

Svetach [21]3 years ago

6 0

Answer:

z = 50

x = 26

Step-by-step explanation:

set 3z + 10 = 4z - 40 and solve: z = 50

create equation for 5x:

5x + 50 = 180, solve: x = 26

You might be interested in

Which are NOT true for solving equations? Select ALL that apply.

enot [183]

Answer:

d, To undo addition, you can use multiplication

Step-by-step explanation:

a, To remove a whole number next to the variable, multiply both sides by that number

3 0

3 years ago

The owner of the Outdoor Furniture Center decides to use the 120% markup. At the end on

lana66690 [7]

Answer: The total price of a bench is 1.008x.

Step-by-step explanation:

Since we have given that

Let the cost price be 'x'.

Mark up % = 120%

So, Mark up value would be

$\dfrac{120}{100}x\\\\=1.20x$

Discount % = 20%

Amount of discount is given by

$\dfrac{20}{100}\times 1.2x\\\\=0.2\times 1.2x\\\\=0.24x$

So, it becomes,

Amount after discount is given by

$1.2x-0.24x\\\\=0.96x$

Sales tax = 5%

Amount of sales tax would be

$\dfrac{100+5}{100}\times 0.96x\\\\=\dfrac{105}{100}\times 0.96x\\\\=1.05\times 0.96x\\\\=1.008x$

Hence, the total price of a bench is 1.008x.

6 0

3 years ago

Marcie cooked dinner for herself. The original recipe has a serving size of 4 and requires four and four fifths pounds of chicke

Margarita [4]

Answer:

1.2 pounds of chicken per serving.

Step-by-step explanation:

4 and 4/5 of pounds of chicken for serving of 4.

We can also write this as 4.8 pounds of chicken.

To find how much pound of chicken will be needed for a single serving we have to divide 4.8 by 4.

$\frac{4.8}{4} = 1.2 \: pounds \: of \: chicken$

If this answer helped you, give this answer a heart and rate it.

Thanks!

7 0

2 years ago

gabriel put 6000 in a 2 year CD paying 4% interest, compounded monthly. After 2 years , he withdrew all his money. what was the

shutvik [7]

amount after 2 years = 6000(1 + (0.04/12))^24 = 6498.86

7 0

3 years ago

Read 2 more answers

(7/4x-5)+(2y-3.5)+(-1/4x+5)

Mazyrski [523]

Hope this helps you !

6 0

2 years ago