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3 years ago

Twice a number plus four equals 6. what is the number

Mathematics

1 answer:

Kay [80]3 years ago

4 0

The number is 1. 1+1+4=6

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Identify the expressions for which limits exist.

alexdok [17]

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Step-by-step explanation:

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2 years ago

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Solve by completing the square

Sveta_85 [38]

$\qquad\qquad\huge\underline{{\sf Answer}}☂$

Let's solve ~

$\qquad \sf \dashrightarrow \: {x}^{2} + 8x = 33$

$\qquad \sf \dashrightarrow \: {x}^{2} + 8x +16 = 33 + 16$

$\qquad \sf \dashrightarrow \: (x + 4) {}^{2} = 49$

$\qquad \sf \dashrightarrow \: x + 4 = \sqrt{49}$

$\qquad \sf \dashrightarrow \: x + 4 = \pm7$

Hence, there are two solutions ~

1. when x + 4 = 7

$\qquad \sf \dashrightarrow \: x + 4 = 7$

$\qquad \sf \dashrightarrow \: x = 7 - 4$

$\qquad \sf \dashrightarrow \: x = 3$

2. when x + 4 = -7

$\qquad \sf \dashrightarrow \: x + 4 = - 7$

$\qquad \sf \dashrightarrow \: x = - 7 - 4$

$\qquad \sf \dashrightarrow \: x = - 11$

I hope you understood ~

8 0

2 years ago

What two integers gives a product of -10?

Tcecarenko [31]

Answer:

Here's how to solve it.

Step-by-step explanation:

Ok so, a negative integer and positive ALWAYS equals a negative.

Negative and negative equals positive because it cancels out.

Positive and Positive equals positive.

So to answer your question What negative number times by a positive equals -10?

Well 5 * 2 = 10 Right?

So -5 * 2 = -10

Hope this Helps.

5 0

3 years ago

Write an equation to represent the following description "fourteen less than 8 times a number is -11

Serggg [28]

Answer:

(8 * x) -14 = -11

Step-by-step explanation:

* = multiply sign (i didnt want to put "x" as the multiply sign since "x" is already being used) ( mightve confused you with 2 "x"s in the parenthesis.

x = the number that is missing being multiplied by 8

I put "8" multiplied by "x" in parenthesis since you do parenthesis first in an equation.

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3 years ago

Below are the results of tossing a number cube 7times. Find the experimental probability of tossing an even number. 6 4 3 2 5 3

Daniel [21]

3/7 or 3:7 because you tossed the dice 7 times and got an even number 3 of those times.

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3 years ago

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