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Annette [7]
3 years ago
12

How can the numbers 3,2,4 and 1 equal the number 13 only using addition and subtraction?

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
4 0
3+2+4+1+3= 13 is that what you were looking for

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The square root of 30 times the square root of 3
NARA [144]
The answer is 9.48. also I rounded
6 0
4 years ago
Read 2 more answers
Solve the system of equations: y= x^2 + 2x - 3 and y=3x+ 3.
Semenov [28]

Answer:

(-2, -3)

(3, 12)

Step-by-step explanation:

To solve this, we're gonna get rid of the y's with substitution

x² + 2x - 3 = 3x + 3

Let's make this equation equal to zero

Subtract 3 from both sides

x² + 2x - 3 = 3x + 3

            - 3         - 3

x² + 2x - 6 = 3x

Subtract 3x from both sides

x² + 2x - 6 = 3x

    - 3x        - 3x

x² - x - 6 = 0

Factor the equation

(x - 3)(x + 2) = 0

This means x can be -2 or 3

Let's solve it with -2 first, plug the new x in y = 3x + 3

y = 3(-2) + 3

y = -6 + 3 = -3

Do the same for x = 3

y = 3(3) + 3

y = 9 + 3 = 12

3 0
2 years ago
Please help me solve this in class rn
oksian1 [2.3K]
The grinch mountain was the answer
4 0
3 years ago
Which of the following is true about the expression square root of 3 times square root of 2
dmitriy555 [2]
That it equals2.449 i did the math and that is what i got 
7 0
3 years ago
Eliza is two years younger than half her brother, Juan’s age. Write an equation to represent Eliza’s age. If Juan is 6 how old i
Natalka [10]
X = Juan's age
y = Eliza's age

Some key words/phrases we can use to help us make the equation are:

-is (whatever comes after this word usually equals the end result, or what it equals)
-two years younger
-than
-half her brother's age
.
just break it down :)

x/2 (half her brother's age) - 2 (two years younger) = y (Eliza is...)

| basically,
v

x/2 - 2 = y
So if Juan is 6, then we need to plug in 6 for x.

6/2 - 2 = y

3 - 2 = y

1 = y

ANSWER: Eliza is one year old.
6 0
3 years ago
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