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dolphi86 [110]
3 years ago
13

Solve the equation. −2 1/4=r−4/5 will give brainiest for the first correct answer!!!

Mathematics
1 answer:
STatiana [176]3 years ago
6 0

Answer:

r = -1 9/20

Step-by-step explanation:

-2 1/4 = r - 4/5

Switch sides:

r - 4/5 = -2 1/4

Add 4/5 to both sides.

r = -2 1/4 + 4/5

Change the mixed numeral into a fraction:

r = -9/4 + 4/5

The LCD is 20.

r = -45/20 + 16/20

r = -29/20

r = -1 9/20

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What is the total weight for each group of weight of clay lumps
Verizon [17]
Hey, me again! So, I'll be giving you the totals for EACH group.

For the first group, multiply 1/8 by 3 to get the answer;
3/8 lbs

Do the same for this group (and all of the others) so that the answers are:
Group 2 - 3/4lbs
Group 3 - 2/2 = 1lb
Group 4 - 5/8lb
Group 5 - 7/8
5 0
3 years ago
This is how zirconium appears in the periodic table. Rounded to the nearest whole number, how many electrons are in an atom of z
Marina86 [1]
The answer is:

Rounded to the nearest whole number, there are 40 electrons in an atom of Zirconium.

I hope this helps :D 

3 0
3 years ago
Read 2 more answers
Please answer ASAP I will give you five stars
Nataliya [291]

Known :

r = 6

h = 8

Asked :

V = ...?

Answer :

V = ⅓πr²h

= ⅓ × 3.14 × 6² × 8

= ⅓ × 3.14 × 36 × 8

= 3.14 × 12 × 8

= 301.44 units²

= <u>3</u><u>0</u><u>0</u><u> </u><u>units²</u> (rounded)

So, the volume of the cone is 300 units²

<em>Hope </em><em>it </em><em>helpful </em><em>and </em><em>useful </em><em>:</em><em>)</em>

3 0
3 years ago
A work shift for an employee at a restaurant consists of 12 hours. What fraction of the​ employee's work shift is represented by
Vaselesa [24]

Answer:

4/12 or 1/3

Step-by-step explanation:

there is a fraction of 4 hours in the 12 hours, so 4/12.

That can be simplified to 1/3.

6 0
2 years ago
David wants to pack 574 cereal bars into bags of 10 and bags of 8 the number of bags of 8 is 2 more than the bags of 10. How man
BabaBlast [244]

Answer: Number of bags of 8. = 33

Number of bags of 10. = 31

Step-by-step explanation:

Let x = Number of bags of 8.

y = Number of bags of 10.

As per given.

8x+10y= 574   (i)

x=y+2 (ii)

Put value of x from (ii) in (i)

8(y+2)+10y= 574\\\\\Rightarrow\ 8y+16+10y=574\\\\\Rightarrow\ 18y=574-16\\\\\Rightarrow\ 18y=558\\\\\Rightarrow\ y=\dfrac{558}{18}\\\\\Rightarrow\ y=18

Put this in (i), x= 31+2=33

Hence,

Number of bags of 8. = 33

Number of bags of 10. = 31

6 0
2 years ago
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