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natulia [17]
3 years ago
12

What is the answer to 7x-(5x+9)+4​

Mathematics
1 answer:
Darina [25.2K]3 years ago
8 0
7x -5x -9 + 4
= 2x - 5
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i live a mile away from the gas station, which takes about 10 minutes to get there and back. My dad went to the gas station and
elena55 [62]

Answer: because he might be getting groceries and gas and other things

Step-by-step explanation:

8 0
3 years ago
Holly bought a sweater on sale for 38% off the original price. If she saved $67, what was the original price?
Leya [2.2K]

Answer:

If she saved 30% off the original price which is the same as saying she saved $18.00.  

 

That means $18.00 is 30% of the original price.  

 

Let x be original price of the sweater

 

.3x = 18

x= 18/.3

 

x= $60.00

Step-by-step explanation:

8 0
3 years ago
3,969 + b^2 = 11,025
ludmilkaskok [199]

Answer:

b=84

Step-by-step explanation:

from your equation, subtract 3969 from each side

you are left with b^2=7056

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b=84

7 0
3 years ago
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What is the fourth term in the binomial expansion of (2x – y) 7?
nata0808 [166]

Answer:

(7C4) (2x)^4 (-y)^{7-4}

And replacing we got:

35 (2^4) x^4 (-y)^{-3}

And then the final term would be:

-560 x^4 y^3

Step-by-step explanation:

For this case we have the following expression:

(2x-y)^7

And we can use the binomial theorem given by:

(x+y)^n =\sum_{k=0}^n (nCk) x^k y^{n-k}

And for this case we want to find the fourth term and using the formula we have:

(7C4) (2x)^4 (-y)^{7-4}

And replacing we got:

35 (2^4) x^4 (-y)^{-3}

And then the final term would be:

-560 x^4 y^3

8 0
3 years ago
500 meters divided by 10 days
Flauer [41]

Answer:

50 meters per day

Step-by-step explanation:

7 0
3 years ago
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