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alexandr1967 [171]
3 years ago
7

What should be done so that the expression will have a value of 10? 4 + 4 2 - 5 × 2

Mathematics
1 answer:
skad [1K]3 years ago
7 0
Thanks for clarifying the question. The answer is D, the expression equals 10 the way it is. Hope this could help!
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A drainage pipe 66 in. tall measures 25.12 in. around.
Schach [20]
In order to solve this using V= B(h) (The B is area of the base) you need a radius it doesn't give us that but it does give us the circumference. 
C= 3.14(2r)
25.12=2r divide each by 2 
12.56=r
now use this in the volume formula:
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8 0
3 years ago
Can someone help me on this question?
notsponge [240]

Answer:

x = 19.6

Step-by-step explanation:

By applying cosine rule in ΔBCD,

cos(30)° = \frac{\text{Adjacent side}}{\text{Hypotenuse}}

              = \frac{BC}{BD}

\frac{\sqrt{3}}{2}=\frac{BC}{16}

BC = 8\sqrt{3}

Now, by applying sine rule in ΔBAC,

sin(45)° = \frac{\text{Opposite side}}{\text{Hypotenuse}}

\frac{1}{\sqrt{2}}=\frac{AB}{BC}

\frac{1}{\sqrt{2}}=\frac{x}{8\sqrt{3}}

x = 8\sqrt{6}

x = 19.59

x ≈ 19.6  

3 0
2 years ago
Alexandra has 78 emails in her box. she deletes 47 emails. How many emails are left in her box? Draw jumps and label the number
labwork [276]
There are 31 emails left in her box. Hope this helps!! :)
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When did my mom chop up my glizzy<br><br> A:2015<br> B:2017<br> C:2018<br> D:2020
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3 years ago
Can someone check my math homework? Please I need it to be checked.
dmitriy555 [2]
I have to say this is wrong because you subtracted 3 and 3 is the variable term. So what you need to do is to add 9 to both side to get 3x by it self. Then divide by 3 and then x=6
6 0
3 years ago
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