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weeeeeb [17]
3 years ago
8

The Sum of two numbers is six what number is 15 less than two times the second number what are the numbers

Mathematics
1 answer:
Ugo [173]3 years ago
3 0

Answer:

9 and -3

Step-by-step explanation:

   Let the first number be x

   Second number = y

                     x + y = 6

                           x = 15 - 2y

        15 - 2y + y = 6

                15 - y = 6

                      -y = 6 - 15

                       -y = -9 ( - sign gets cut cuz there is - sign at both the sides)

   

      Therefore, first number = 9

             x + y = 6

             x = 9 = 6

             x = -3

   Therefore, second number = -3

  Proof:

9 + (-3) = 6

Hope this helps

:)

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Tcecarenko [31]
M < PQS + m < RQS = 180° because they are supplementary angles.

Therefore:
(3x + 3) + (x + 19) = 180

3x — 3 + x + 19 = 180

4x + 16 = 180

Subtract 16 from both sides

4x — 16 = 180 — 16

4x = 164

Divide both sides by 4:

4x/4 = 164/4

x = 41

Therefore, the correct answer is x = 41
6 0
2 years ago
BRAINLIEST For the fastest answer
MaRussiya [10]

Answer:

the answer is b wait I can also be c and d

3 0
1 year ago
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the length of a rectangular garden is 3 m greater than the width. The area of the garden is 70m squared. find the dimensions of
Lerok [7]
A = l x w

so you know that the length is 3m longer than the width, so you could use a formula to represent that

w = l + 3

you then substitute the second equation into the first to solve for l

70 = l x (l +3)
70 = l^2 + 3l

you could then rearrange the formula and solve for l using the quadratic formula 

0 = l^2 + 3l - 70

l = -3 +- (square root (3)^2 - 4(1)(70)) / 2(1)
l = -3 +- (square root 9 + 280) / 2
l = -3 +- (square root 289) / 2
l = -3 +- 17 / 2

then you solve for the two seperate roots

l = -3 + 17 /2
l = 14 / 2
l = 7

or 

l = -3 - 17 / 2
l = -20 / 2
l = -10

since a length cannot be negative, this root is not viable. therefore l = 7

to solve for w you would use

w = l + 3
w = 7 + 3
w = 10 

hope this helps! if you did not understand a step or concept please let me know!
4 0
3 years ago
SHOW WORK!!
denpristay [2]

If he puts 300 sunfish into the pond, he will put 225 perch in the pond.

<h3>What is a ratio?</h3>

A ratio is the comparison of one thing to another. Generally, ratios compares value.

They store the children pond keeping a ratio of 4 sunfish to 3 perch. Therefore, the ratio of sunfish to perch will be as follows

  • 4:3

If he 300 sunfish into the pond , the number of perch that will be in the pond can be calculated as follows:

  • 4 / 3 = 300 / x

cross multiply

4x = 900

x = 900 / 4

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learn more on ratios here: brainly.com/question/89456?referrer=searchResults

6 0
2 years ago
is (-1/2 x + 6/7) - (7/2 x - 4/7) equivalent to -4 x + 2/7 ? use the properties of operations to justify your answer
LuckyWell [14K]

Answer:

The given equation is NOT justified.

Step-by-step explanation:

Here, the given equation is (\frac{-1}{2}x + \frac{6}{7} )  -  (\frac{7}{2}x - \frac{4}{7} )   = -4x + \frac{2}{7}

Now, here Consider the left hand side and simplifying the left side by operating on the like terms,

⇒(\frac{-1}{2}x + \frac{6}{7} )  -  (\frac{7}{2}x - \frac{4}{7} )   = \frac{-1}{2}x + \frac{6}{7}   -  \frac{7}{2}x + \frac{4}{7}  =  (\frac{-1}{2}x -\frac{7}{2}x) + (\frac{6}{7}   + \frac{4}{7})

=(\frac{-1 - 7}{2}x ) + (\frac{6 + 4}{7} ) = \frac{-8x}{2} + \frac{10}{7}   \neq -4x + \frac{2}{7}

Here, Left side of equation  ≠ Right side of the equation

Hence, (\frac{-1}{2}x + \frac{6}{7} )  -  (\frac{7}{2}x - \frac{4}{7} )   ≠ -4x + \frac{2}{7}

4 0
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