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Greeley [361]
3 years ago
15

I don't understand anything Please help

Mathematics
2 answers:
pychu [463]3 years ago
5 0
4) -2x-3+3x≥12

ok so this symbol ≥ means greater than or equal too

So since that symbol is with the 12 that means 
-2x-3+3x 
Has to be greater than or equal to 12
So
For the x's you can substitute anything as long as its greater than or equal to 12

Like: 
-2*-4-3+3*4

-2*-4 = 8

8-3+3*4

8-3=5

5+3*4

5+3=8

8*4=32 which is greater than 12 and what they're looking for is something greater than or equal to 12
andrezito [222]3 years ago
3 0
First, organize all of the like terms. All of the numbers to one side, all of the variables to the other. Then, divide to get x by itself.

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Please help this is on a test!!!!<br> What does x equal when 2x = 128?
Leokris [45]

Answer:

x=64

Step-by-step explanation:

you have to divide both sides by two to isolate the variable.

8 0
3 years ago
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What is the value of x if 5x + 45 = 35? <br> Select one:<br><br> 10<br><br> -2<br><br> -10<br><br> 2
andrew-mc [135]

Answer:

x= -2

Step-by-step explanation:

Simplifying 5x + 45 = 35 Reorder the terms: 45 + 5x = 35 Solving 45 + 5x = 35 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-45' to each side of the equation. 45 + -45 + 5x = 35 + -45 Combine like terms: 45 + -45 = 0 0 + 5x = 35 + -45 5x = 35 + -45 Combine like terms: 35 + -45 = -10 5x = -10 Divide each side by '5'. x = -2 Simplifying x = -2

4 0
3 years ago
2 Point
SOVA2 [1]

Answer:P(win|regular) = 0.84

P(win|prevent) = 0.70

Conclusion: You are more likely to win by playing regular defense.

Step-by-step explanation:

Divide the regular defense wins(42) but the total of regular defense (50) and you get 0.84.

Then divide the prevent defense wins(35) by the total of prevent defense(50) and you get 0.70.

Since the regular defense is more than the prevent defense, then you are more likely to win by playing the regular defense. (:

4 0
3 years ago
What number is 80% of 66
Anni [7]
52.8 is the answer.


Hope this helps!
4 0
4 years ago
In triangle △ABC, ∠ABC=90°, BH is an altitude. Find the missing lengths. AB=9, and AC=12, find HC.
pickupchik [31]

Answer:

Step-by-step explanation:

It is given that in △ABC, ∠ABC=90°, BH is an altitude and AB=9 and AC=12, thus using the Pythagoras theorem in △ABC, we get

(AC)^{2}=(AB)^{2}+(BC)^{2}

(12)^{2}=(9)^2+(BC)^2

144=81+(BC)^2

(BC)^2=63

BC=\sqrt{63}

Now, From ΔABC and ΔHBC, we have

∠ABC=∠BHC(each90)

∠ACB=∠HCB (Common)

By AA similarity, ΔABC is similar to ΔHBC.

Thus, using the similarity condition, we get

\frac{HC}{BC}=\frac{BC}{AC}

\frac{HC}{\sqrt{63}}=\frac{\sqrt{63}}{12}

HC=\frac{63}{12}=\frac{21}{4}

7 0
3 years ago
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