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Verizon [17]
4 years ago
7

Multiplying a number by 8 and then subtracting 10 from it is the same as tripling the number and adding 5 to it. What is the num

ber?
Mathematics
1 answer:
Elena L [17]4 years ago
3 0
I think it's 3....I set it up like this...
8x-10 = 3x + 5
and solved for x.
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7TH GRADE MATH!!! PLZ HELP WILL MAKE BRAINLIEST AND THANKS!
ivanzaharov [21]

Answer: A, C, D

If you try plugging in a few different numbers into these equations, you will get only 1 result.

:)

3 0
3 years ago
Solve for x<br> 3(x + 5) = 9
dlinn [17]

x=-2

3(x + 5) = 9

3x+15=9

3x=9-15

3x=-6

÷3 ÷3

x=-2

hope this helped ya have a good day bro cya)

3 0
3 years ago
How do you solve <br> X+y=11 <br> Xy=30
Simora [160]
<span>X+y=11 
Xy=30
</span><span>
x=11-y

(</span>11-y)y=30
11y-y²=30
11y-y²-30=0
y²-11y+30=0
y²-5y-6y+30=0
y(y-5)-6(y-5)=0
(y-5)(y-6)=0

y-5=0
y=5

y-6=0
y=6

x=11-y
x=11-5=6

x=11-6=5




x=6 y=5

x=5 y=6

3 0
4 years ago
Read 2 more answers
1. Why do you think the rule is called the difference of two squares?
WARRIOR [948]

Answer:

Below.

Step-by-step explanation:

1.  a^2 - b^2 = (a - b)(a + b)

a^2 and b^2 are 2 perfect squares and a^2 - b^2 are their difference.

2. The order of multiplication does not matter because in algebra  multiplication is commutative ( meaning any order gives the same result).

3 0
3 years ago
What is the measure of Angle y in this figure?
uranmaximum [27]

\qquad \qquad\huge \underline{\boxed{\sf Answer}}

Here, in the given figure. Angle y° forms vertical opposite angle pair with Angle 163°, therefore they have equal values.

that means ~

\qquad \sf  \dashrightarrow \: y \degree = 163 \degree

3 0
2 years ago
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