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coldgirl [10]
3 years ago
10

Which expression represents this word phrase? seven less than the quotient of x and 9

Mathematics
1 answer:
KIM [24]3 years ago
4 0
Required expression is x/9 - 7
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What is the value of x in the Equation 3x-4y =65 when y=4
Aneli [31]
X would have a value of 27

Since 4 has y=4 which would be 16 you would add that with 65 get 81 then you would divide that by 3 and get your answer
8 0
3 years ago
Read 2 more answers
Solve the following system of equations for a and for b:
viktelen [127]

Answer:

a=3\\b=1

Step-by-step explanation:

9a+3b=30\\8a+4b=28

Let's solve the second equation for a to later on replace it in the first equation.

8a+4b=28\\8a=28-4b\\a=\frac{28-4b}{8}

Now plug this into the first equation.

9a+3b=30\\9(\frac{28-4b}{8})+3b=30

Distribute the 9

(\frac{252-36b}{8}) +3b=30

Break down the fraction.

\frac{252}{8}-\frac{36b}{8}+3b=30

Simplify.

\frac{63}{2}-\frac{9}{2}b+3b=30

Subtract \frac{63}{2}

-\frac{9}{2}b+3b=30-\frac{63}{2}

Combine like terms.

\frac{-9+2*3}{2}b=\frac{30*2-63}{2}

\frac{-9+6}{2}b=\frac{60-63}{2}

\frac{-3}{2}b=\frac{-3}{2}

Muliply by the reciprocal or inverted fraction next to b.

(-\frac{2}{3})(-\frac{3}{2}) b=-\frac{3}{2}(-\frac{2}{3})

b=1

Now plug this value into any of the equations to find the value of a.

8a+4b=28\\8a+4(1)=28\\8a+4=28\\8a=28-4\\8a=24\\a=\frac{24}{8}\\ a=3

5 0
4 years ago
Raul has $460 in his checking account. Each month, $45 is automatically deducted from his account to pay for his cell phone plan
MissTica
X=number of months
how much is deducted total=number of months times amount deducted per m onth
amount deducted per month=45
number of months=x
how much deducted total=45x

460-deducted total is more than 100
460-45x>100
solve for x
add 45x to both sides
460>100+45x
subtract 100
360>45x
divide both sides by 45
8>x
answer is 7 months
if he does 8 months, then he will have exatly 100 and 100 is noe more than 100



answer is 7 months
6 0
3 years ago
Read 2 more answers
List all integers between −100 and 100 that are congruent to −1 modulo 25.
777dan777 [17]

"-1 modulo 25" is "1 less than a precise multiple of 25". 
So what are the exact or precise multiples of 25 in the appropriate interval? 
It is -75, -50, -25, 0, 25, 50, 75, and 100. 
Now just subtract 1 from each of them.

So the answers are -76, -51, -26, -1, 24, 49, 74, and 99.

4 0
4 years ago
32x2 – 24x = 0<br> What’s the answer to this?
Vlad [161]

Answer:

x=0      x = 3/4

Step-by-step explanation:

32x^2 – 24x = 0

Factor out 8x

8x(4x -3)

Using the zero product property

8x = 0   4x-3 =0

x=0       4x=3

x=0      x = 3/4

3 0
4 years ago
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