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3 years ago

In math what is the answer for x + 3

Mathematics

1 answer:

nadya68 [22]3 years ago

6 0

It depends on what the value of x is!! do you have any more info?

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Find the value of the missing angle in the following Triangle x= _________ degrees

lisabon 2012 [21]

The answer is 65 degrees

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3 years ago

≠A student took a system of equations, multiplied the first equation by and the second equation by , then added the results toge

Mandarinka [93]

Answer:

C. 3x+6y=9 and-2x-4y=4

Step-by-step explanation:

Given

Steps:

Multiply equation 1 by 2

Multiply equation 2 by 3

Add the results together

The attachment completes the question

(a): -2x+4y=4 and -3x+6y=6

Multiply by 2: $-2x+4y=4 ===> -4x + 8y = 4$

Multiply by 3: $-3x+6y=6 ===> -6x + 12y = 12$

Add together

$-4x - 6x + 8y + 12y = 4 + 12$

$-10x + 20y = 16$

B. 3x+y=12 and -3x+6y=6

Multiply by 2: $3x+y=12 ===> 6x + 2y = 24$

Multiply by 3: $-3x+6y=6 ==> -9x + 18y = 18$

Add together:

$6x - 9x + 2y + 18y = 24 + 18$

$-3y + 10y = 42$

C. 3x+6y=9 and-2x-4y=4

Multiply by 2: $3x+6y=9 ===>6x + 12y = 18$

Multiply by 3: $-2x-4y=4 ===> -6x - 12y = 12$

Add together:

$6x - 6x + 12y - 12y = 18 + 12$

$0 = 30$

This is the equation the student could have used because 0 = 30 means the equation has no solution.

5 0

3 years ago

A man travels 2 miles, turn left and travels 3 miles, turn left again and travel 6 miles. How far is he from the starting point?

Lelu [443]

Answer: 5 miles

Step-by-step explanation:

this creates a polygon which can be shortened to be a triangle with side lengths 3 and 4 and the hypotenuse unknown. to find the side length you use the formula a^2 + b^2 = c^2

3^2 + 4^2 = c^2

9 + 16 = c^2

25 = c^2

sqrt(25) = c

c = 5

Download pdf

4 0

3 years ago

What is negative (3x^4/2y^5)^-3

den301095 [7]

Answer:

8y^15/27x^12

Step-by-step explanation:

-3 is a negative index

to clear the negative sign. we make it a reciprocal of the expression rise to the power of 3.

expand the bracket the power of three

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3 years ago

There's a bag of 10 marbles. Three of them are red, five are blue, and two are green. What's the probability of randomly picking

MakcuM [25]

There are 5 blue green marbles and 2 green marbles. Therefore, the probability would be 5 + 2 = 7/10 (D).

4 0

3 years ago

Read 2 more answers