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3 years ago

15 POINTS AND BRAINLIEST ANSWER!!

Mathematics

2 answers:

lisov135 [29]3 years ago

6 0

Copper: density ≤ 3.4
Iron: density=2.26

Before: 200 t
After: 800 t

Ede4ka [16]3 years ago

3 0

Answer:

density of iron is 7.8g/cm cubed

density of copper is 8.3g/cm cubed

Step-by-step explanation:

density =mass/volume

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What number divided by -7 is equal to -15

steposvetlana [31]

Answer:

$x = -105$

Step-by-step explanation:

What number divided by -7 is equal to -15

∨ ∨ ∨ ∨ ∨

x ÷ -7 = -15

Multiply -7 to both sides:

$\frac{x}{-7}=15$

$x = -105$

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2 years ago

What is the solution to the linear equation? 4b + 6 = 2 – b + 4

Reil [10]

Answer:

$\large\boxed{b=0}$

Step-by-step explanation:

$4b+6=2-b+4\qquad\text{combine like terms}\\\\4b+6=(2+4)-b\qquad\text{add}\ b\ \text{to both sides}\\\\5b+6=6\qquad\text{subtract 6 from both sides}\\\\5b=0\qquad\text{divide both sides by 5}\\\\b=0$

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3 years ago

Read 2 more answers

The cost for 25 square yards of carpet is $650 including delivery and installation. The cost for 40 square yards of installed ca

RUDIKE [14]

I need the answers lol

4 0

3 years ago

Questions are in file/pictures! (as you can see all my questions are from math lol)

77julia77 [94]

Answer:

the first one would be 12 square feet

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Step-by-step explanation:

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3 years ago

Henry can write 5 1/4 pages of his novel in 3 hours how many page can he write in 8 hours

ICE Princess25 [194]

If you would like to know how many pages can Henry write in 8 hours, you can calculate this using the following steps:

5 1/4 = 21/4 pages ... 3 hours
x pages = ? ... 8 hours

21/4 * 8 = 3 * x
21 * 2 = 3 * x
3 * x = 42
x = 42 / 3
x = 14 pages

Henry can write 14 pages of his novel in 8 hours.

8 0

3 years ago