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olganol [36]
3 years ago
10

7(1 - 76) - 2b = -197

Mathematics
1 answer:
noname [10]3 years ago
4 0

Answer:

b= -164

Step-by-step explanation:

calculate the difference

7x(-75)-2b= -197

multiply the numbers

-525-2b= -197

move the constant to the right- hand side and change the sign

-2b= -197+525

add

-2b=328

divide

b= -164

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Solve for y.<br><br> x + y + z = 4<br><br> 4x - y - z = 1<br><br> x + z = 2
UNO [17]

Answer:

y=2

Step-by-step explanation:

<u>note:</u><u> </u><u>it</u><u> </u><u>only</u><u> </u><u>says</u><u> </u><u>to</u><u> </u><u>figure</u><u> </u><u>out</u><u> </u><u>y</u>

x+y+z=4

x+z+y=4

2+y=4 (since x+z=2)

y=4-2

y=2

3 0
3 years ago
James answered 14 items correctly on a 16-item quiz. what percent did he answer correctly?
Troyanec [42]
So,

I like to simplify a fraction first.  This is what I do when I'm in a store trying to find the unit price.

\frac{14}{16}

Factor.
\frac{2*7}{2*2*2*2}

Cross out ones.
\frac{7}{2*2*2}

Multiply it out.
\frac{7}{8}

In my head, I remember that one-eighth is equal to 0.125.

So seven-eighths is equal to 0.125 times 7.
0.125 * 7 = 0.875

Convert to percent form.
0.875 --> 87.5%

James answered 87.5% of his quiz correctly.

I actually have the decimal equivalents for eighths in my head when I'm shopping.  So once I get seven-eighths, I immediately know how much that is.  I can also subtract 0.125 from 1.000 to get seven-eighths.
3 0
4 years ago
Read 2 more answers
6:
horrorfan [7]

Step-by-step explanation:

charging the phone for 1 minute ,it has 2%

i.e,1----->2

After 2 minutes from that time ,i.e total 3 minutes

it has 6% charge

i.e,3--------->6

from the both the above cases ,1 minute provide 2%=6/3

=2

Hence,

for getting 50%charge=50/2

=25 min

and,for 90 %charge=90\2

=45 min

8 0
2 years ago
Which statement correctly compares the two functions? GIVING BRAINLIEST!!
geniusboy [140]

Answer:

A

Step-by-step explanation:

4 0
3 years ago
Read 2 more answers
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Neporo4naja [7]

Answer: V≈56.55

Step-by-step explanation:

V=πr2h

3 = radius

2=height

Fill in the formula = V=πr2h=π·32·2≈56.54867

<u>V≈56.55</u>

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3 years ago
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