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3 years ago

What is work shown for 3 + 2/5x = -1

Mathematics

1 answer:

polet [3.4K]3 years ago

5 0

Answer:

x = -1/10

Step-by-step explanation:

3 + 2/5x = -1

multiply through by 5x to make the equation linear

3 × 5x + 2/5x × 5x/1 = -1 × 5x

15x + 2 = -5x

collect like terms

15x + 5x = -2

20x/20 = -2/20

x = - 1/10

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grigory [225]

Answer:8 1/4 cups

Step-by-step explanation:

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3 0

2 years ago

When making a book cover, Anwar adds an additional 20 square inches to the surface area to allow for overlap. How many square in

e-lub [12.9K]

Answer:

234 square inches

Step-by-step explanation:

We are given that

Length of book, l=11 in

Width of book, w=8 in

Height of book, h=1in

Additional area required to overlap=20 square inches

We have to find how many square inches of paper to make cover of one book.

We know that surface area of cuboid

$S=2(lb+bh+hl)$

Using the formula

Surface area of book

$S=2(11\times 8+8\times 1+1\times 11)$

$S=214 in^2$

Total paper used to make cover of one book

=Surface area of book +additional surface area

= $214+20$

$=234in^2$

Hence, Anwar will use paper to make cover of one book=234 square inches

3 0

3 years ago

Tutorial C<br> A 3-yard roll of aluminum foil costs $4.14. What is the price per<br> foot?

Marta_Voda [28]

Answer:

$.46 or 46 cents per foot

Step-by-step explanation:

3 yards = 4.14

1 yard is 3 feet

3 yards is 9 feet

4.14 ÷ 9 = .46

5 0

2 years ago

3|x| = 18 show work please

Alinara [238K]

I think the answer is 6 since u multiply them

8 0

3 years ago

I need help with HW it is hard (repost i forgot picture)

creativ13 [48]

Answer:

b 8 hours

Step-by-step explanation:

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3 years ago