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larisa86 [58]
3 years ago
7

A city has 4 new houses for every 9 old houses. If there are 28 new houses in the city, how many old houses are there?

Mathematics
2 answers:
Ratling [72]3 years ago
5 0
The answer is B because 4 X 7 is 28 so 9 times 7 is 63
Ludmilka [50]3 years ago
5 0
The answer is 63, hope this helps
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If Aldo puts 400 into a savings account that paid an interest rate of 5.4 percent What was the total amount in his account at th
Ne4ueva [31]

Answer:

\$421.60

Step-by-step explanation:

we know that

The simple interest formula is equal to

A=P(1+rt)

where

A is the Final Investment Value

P is the Principal amount of money to be invested

r is the rate of interest  

t is Number of Time Periods

in this problem we have

t=1\ year\\ P=\$400\\ A=?\\r=5.4\%=5.4/100=0.054

substitute in the formula above

A=400(1+0.054*1)

A=400(1.054)

A=\$421.60

Remember that Interest is equal to

I=A-P

I=\$421.60-\$400=\$21.60

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3 years ago
Use the following steps to prove that log b(xy)- log bx+ log by.
borishaifa [10]

Answer with Step-by-step explanation:

a.x=b^p

y=b^q

Taking both sides log

log x=plog b

Using identity:logx^y=ylogx

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Using identity:log_x y=\frac{log y}{log x}

log y=qlog b

q=\frac{log y}{log b}=log_b y

b.xy=b^pb^q

We know that

x^a\cdot x^b=x^{a+b}

Using identity

xy=b^{p+q}

c.log_b(xy)=log_b(b^{p+q})

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Substitute the values then we get

log_b(xy)=(log_b x+log_b y)

By using log_b b=1

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3 0
3 years ago
45m<br> 34m<br> 74m<br> What is the area
Masja [62]

Answer:

Add all and you will get the answer...........

5 0
2 years ago
Need some help on this
enot [183]

Answer:

1= 0.5

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Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Find each angle measure. ( Diagrams are not drawn to scale.)​
irina1246 [14]

Answer:

1-141

2-39

3-141

Step-by-step explanation:

180-39=141

1 and 3 look the same size and 2 looks the same as c (39°) so you jsut fill in for the letters

I'm pretty sure this is right

4 0
3 years ago
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