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yan [13]
3 years ago
15

Which expression is equivalent to (7x-5)-(3x-2)

Mathematics
1 answer:
Firlakuza [10]3 years ago
3 0
Combine like terms. 7x-3x=4x and -5-(-2)=-3. The answer is D. 4x-3
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Find the average of the x-intercepts.<br><br> x=2 x=-4
natima [27]
Step 1: Subtract 2x from both sides.

x−2x=2x−4−2x

−x=−4

Step 2: Divide both sides by -1.

−x−1=−4−1

x=4

Answer:

x=4

3 0
3 years ago
Read 2 more answers
Determine whether (a) x = -1 or (b) x = 2 is a solution to this equation<br><br> X-8=-9
andrew11 [14]

Answer: (a) x = -1

Step-by-step explanation:

<u>Given</u>

x - 8 = - 9

<u>Add 8 on both sides to isolate x</u>

x - 8 + 8 = - 9 + 8

\boxed{x=-1}

Hope this helps!! :)

Please let me know if you have any questions

8 0
3 years ago
Find the value of 4x2 – 2y when x = 3 and y = 2.
Alina [70]

Answer:20

Step-by-step explanation:

4(3)2-2(2)

12(2)-4

24-4=20

6 0
3 years ago
Help pls I'm so confused with this
FrozenT [24]

Answer:

6400 AED

9.14%

yes. The interest rate is 9.14%. This is less than 10%

Step-by-step explanation:

Interest amount she would pay = total of loan to be repaid - amount borrowed

16,400 - 10,000 = 6,400 AED

Interest = loan x interest rate x time

we have all the parameters of the above equation apart from the interest rate. We can thus determine the interest rate from the above equation

6,400 AED = 10,000 x interest rate x 7

6,400 AED = 70,000 x interest rate

Divide both sides by 70,000 to find a value for interest rate

interest rate = 0.091429 = 9.14%

3 0
3 years ago
If sin Θ = 2 over 3 and tan Θ &lt; 0 , what is the value of cos Θ?
Zielflug [23.3K]

\sin \theta = \dfrac 2 3

\tan \theta < 0

Positive sine, negative tangent, means we have a negative cosine.  We're talking about the second quadrant.

\cos^2 \theta + \sin ^2 \theta = 1

\cos^2 \theta = 1 - \sin ^2\theta

\cos \theta = \pm \sqrt{1 - \sin ^2\theta}

We know it's negative,

\cos \theta = - \sqrt{1 - (2/3)^2} =-\sqrt{5/9} = - \dfrac 1 3 \sqrt{5}

Answer: -(1/3)√5

4 0
4 years ago
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