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Mice21 [21]
3 years ago
8

Solve: -4 < -2x < 10

Mathematics
1 answer:
Minchanka [31]3 years ago
8 0
<h3>Answer:   -5 < x < 2</h3>

Explanation:

The expression -2x means -2 times x. To undo this, we divide all parts of the inequality by -2. Dividing by a negative number will flip the inequality sign. We go from "less than" to "greater than"

-4 < -2x < 10

-4/(-2) > x > 10/(-2) .... inequality signs flip

2 > x > -5

-5 < x < 2

This unknown number x is between -5 and 2. It cannot equal -5. It cannot equal 2.

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How many things can happen if you spin the spinner three times and flip the coin three times?
vladimir2022 [97]

Answer:

8

Step-by-step explanation:

8 possible outcomes

We can now extend this thinking. If we toss three coins, we have a total of 2 × 2 × 2 = 8 possible outcomes: HHH, HHT, HTH, HTT, THH, THT, TTH, and TTT.

7 0
3 years ago
Uppose a triangle has a,b and c what must be true?
alexdok [17]
Obtuse: b^2 + c^2 > a^2

Right: b^2 + c^2 = a^2

Acute: b^2 + c^2 < a^2



A^2 + B^2 + c^2 - 2bc*cosA
As (A), is an Obtuse cos A is Negative say 2bccosA = - k then;
a^2 = b^2 + c^2 + k
a^2 > b^2 + c^2


So, your Answer would be (B)
Hope this helps!!.!

6 0
3 years ago
Read 2 more answers
1/3 divided by 3 1/2
fomenos

Answer:

2/21

Step-by-step explanation:

8 0
2 years ago
List two advantages of buying and two advantages of renting
Ede4ka [16]
Here are your answers:                                                                                   Renting:                                                                                                               1. When you rent something you will have for a good amount of time.               2. When you rent something you have control over it since you rented it with your money.                                                                                                    Buying:                                                                                                                 2, You get to keep it forever.                                                                      3. you can sell it for more so you can make a profit to buy something else.
7 0
3 years ago
Read 2 more answers
Multiply using FOIL or Table method (x + 4) (x + 5)
mylen [45]

Answer:

{x}^{2}  + 9x + 20

Step-by-step explanation:

1) Use FOIL method: (a + b) (c + d) = ac + ad + bc + bd.

{x}^{2}  + 5x + 4x + 20

2) Collect like terms.

{x}^{2}  + (5x + 4x) + 20

3) Simplify.

{x}^{2}  + 9x + 20

<em><u>Therefor</u></em><em><u>,</u></em><em><u> </u></em><em><u>the</u></em><em><u> </u></em><em><u>answer</u></em><em><u> </u></em><em><u>is</u></em><em><u> </u></em><u>x</u><u>²</u><u> </u><u>+</u><u> </u><u>9x</u><u> </u><u>+</u><u> </u><u>20</u>.

5 0
3 years ago
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