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soldier1979 [14.2K]
3 years ago
12

Simplify. 10 – 5.3 • (–4 + –6) a. 63 b. 47 c. –43 d. –47

Mathematics
1 answer:
Ulleksa [173]3 years ago
4 0
10-5.3*(-4+-6)
10-5.3*(-10)
10-(-53)=63
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Put the following portions in order from least to greatest 30% 1/5 75% 5/6
sertanlavr [38]

Answer:

1/5,30%,75%,5/6

Step-by-step explanation:

first turn all of them in to decimals:

1/5=0.20

30%=0.30

75%=0.75

5/6=0.83

then put the decimals in order from least to greatest

done!

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3 years ago
Drag a statement or reason to each box to complete this proof.
kotykmax [81]

Step-by-step explanation:

distribute the -2 to (x+1) you end up with -2x-2=8 (multiplication property). Add 2 to both sides to get rid of the -2 of the left (addition property). 8+2=10. -2x=10 divide the -2 to both sides. x=-5 (division property).

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3 years ago
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Water is an example of a solvent true or false !<br> Hurry up and answer
lara [203]
Yes water is a solvent
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3 years ago
How do you do number 1?<br>Whenever I tried to answer it, I always get fraction. help me.​
Flura [38]

Answer:

The pairs are (13,15) and (-15,-13).

Step-by-step explanation:

If n is an odd integer, the very next odd integer will be n+2.

n+1 is even (so we aren't using this number)

The sum of the squares of (n) and (n+2) is 394.

This means

(n)^2+(n+2)^2=394

n^2+(n+2)(n+2)=394

n^2+n^2+4n+4=394               since (a+b)(a+b)=a^2+2ab+b^2

Combine like terms:

2n^2+4n+4=394

Subtract 394 on both sides:

2n^2+4n-390=0

Divide both sides by 2:

n^2+2n-195=0

Now we need to find two numbers that multiply to be -195 and add up to be 2.

15 and -13 since 15(-13)=-195 and 15+(-13)=2

So the factored form is

(n+15)(n-13)=0

This means we have n+15=0 and n-13=0 to solve.

n+15=0

Subtract 15 on both sides:

n=-15

n-13=0

Add 13 on both sides:

n=13

So if n=13 , then n+2=15.

If n=-15, then n+2=-13.

Let's check both results

(n,n+2)=(13,15)

13^2+15^2=169+225=394.  So (13,15) looks good!

(n,n+2)=(-15,-13)

(-15)^2+(-13)^2=225+169=394.  So (-15,-13) looks good!

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3 years ago
McKenzie works for a catering company she is making ice tea for an upcoming event for each container of tea she uses 16 tea bags
never [62]

64 divided by 16= 4

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if Mckenzie uses 64 tea bags she will need to use 12 cups of sugar

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