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AleksandrR [38]
4 years ago
6

3x+10y=31 2x + 10= y solve the problem with substitution

Mathematics
1 answer:
barxatty [35]4 years ago
3 0

Answer:

(-3,4) or x = - 3, y = 4

Step-by-step explanation:

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A one-celled organism measures 32 mm in length in a photograph. If the photo has been enlarged by a factor of 100, what is the a
larisa86 [58]

32 mm = length × 100

(32 mm)/100 = length . . . . . divide both sides by 100

0.32 mm = length

The actual length of the organism is 0.32 mm.

5 0
3 years ago
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Find the value of x.
V125BC [204]

Answer: B. 14

Step-by-step explanation:

because 140 divided by 10 equals 14

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3 years ago
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Which of the following is a solution of x2 + 2x + 4?
ivolga24 [154]
Strictly speaking, x^2 + 2x + 4 doesn't have solutions; if you want solutions, you must equate <span>x^2 + 2x + 4 to zero:

</span>x^2 + 2x + 4= 0.  "Completing the square" seems to be the easiest way to go here:

rewrite   x^2 + 2x + 4  as   x^2 + 2x + 1^2 - 1^2 = -4, or
                                              (x+1)^2 = -3
or                                            x+1 =i*(plus or minus sqrt(3))

or                                            x = -1 plus or minus i*sqrt(3)

This problem, like any other quadratic equation, has two roots.  Note that the fourth possible answer constitutes one part of the two part solution found above.
3 0
3 years ago
Can someone help me, please?
weeeeeb [17]

Answer:

what does the picture say?

Step-by-step explanation:

3 0
3 years ago
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Which statement is true about the equations-3x 4y 12 and tx 1?
nydimaria [60]

We need to solve -3x+4y=12 for x

Let's start by adding -4y to both sides

-3x+4y-4y=12-4y

-3x=-4y+12

x = (-4y+12)/-3

x= 4/3 y -4

Now substitute 4/3 y -4 for x in 1/4 x - 1/3 y =1

1/4 x -1/3 y =1

1/4 (4/3 y -4) -1/3 y =1

Use the distributive property

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1/3 y -1 - 1/3 y =1

Now combine like terms

(1/3y -1/3y) + (-1) =1

= -1

-1 = 1

Now add 1 to both sides

0=2

So there are no Solutions

The answer is C


I hope that's help Will :)

7 0
3 years ago
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