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kaheart [24]
3 years ago
12

What is the answer to x - 4 = -2

Mathematics
1 answer:
valentina_108 [34]3 years ago
8 0

Answer: x=2

Step-by-step explanation: add 4 to both sides of the equation.

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3 + (5 + 7) Use the commutative property of operations to reverse the numbers in the expression. Use the associative property of
Fantom [35]

Answer:

commutative property:

A + B = B + A

So we have

3 + (5 + 7)  = (5 + 7) + 3

Now distributive means that:

A + (B + C) = (A + B) + C

So  (5 + 7) + 3 = 5 + (7 + 3)

now the equation is easier to solve, because 7 + 3 = 10

5 + (7 + 3) = 5 + 10 = 15

3 0
3 years ago
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5. WHAT IS THE SALE PRICE OF THIS BAG IF IT IS MARKED PHP<br>2735 WITH 33% DISCOUNT?<br>​
Alex777 [14]

Answer:

1832.45

Step-by-step explanation:

2735 - 33% = 1832.45

8 0
3 years ago
a plane is flying horizontally at an altitude of 21000 feet with a ground speed of 875 feet per second. the plane passes directl
Marta_Voda [28]

Answer:

the angle is changing at a rate of 0.0375 rad/s when the time is t=8 seconds

Step-by-step explanation:

since the line D that starts from the spectator and follows the plane has the following equation

D² = x² + H² ,  where H= altitude of the plane , x= horizontal distance

then for x=v*t , where v=speed of the plane and t=time since the plane has passed overhead , we have for the elevation angle

tan θ = x/y =  v*t /H

θ = tan⁻¹ ( v*t /H)

the rate of change in the angle of the spectator's sight θ with the time is

dθ/dt = 1/1+(v*t /H)² * (v/H) = (v/H)/[1+ (v/H)²*t²]

for t=8 seconds

dθ/dt = (875 ft/s/21000 ft)/[1+ (875 ft/s/21000 ft)²*(8 s)²] = 0.0375 rad/s

therefore the angle is changing at a rate of 0.0375 rad/s when the time is t=8 seconds

6 0
4 years ago
PLEZ NEED HELP ASAP 24.455−18.246
zvonat [6]

Answer:

The answer is 6.209

8 0
3 years ago
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Cineplex operates two movie theaters in a city. The profit from the theater can be representened by the example t^3-t^2+2t-100 w
irina [24]

Complete question is;

Cineplex operates two movie theaters in a city. The profit from one theater can be represented by the example t³ - t² + 2t - 100 where t is the number of the tickets sold. The profits from the second theater can be represented by the expression t² - 2t - 300.

Which statements are true about the expression representing Cineplex's total profits in that city?

A) The total profit expression is a polynomial

B) The total profit expression has a constant term

C) The total profit expression is quadratic

D) The total profit expression is a binomial.

E) The total profit expression has four terms

Answer:

A) The total profit expression is a polynomial

B) The total profit expression has a constant term

D) The total profit expression is a binomial

Step-by-step explanation:

Profit from the first theater is;

t³ - t² + 2t - 100

While profit from second theater is; t² - 2t - 300

It means total profit is;

t³ - t² + 2t - 100 + t² - 2t - 300

This gives;

t³ - 400

Now, this is a polynomial as the highest degree is 3. So option A is correct.

Total profit equation has a constant term which is "t". Thus, option B is correct.

Total profit equation is not quadratic as the highest degree is 3. Thus, option C is wrong.

Total profit equation is Binomial because it has just 2 terms. Option D is correct.

Option E is wrong because Total profit equation doesn't have four terms.

7 0
4 years ago
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