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Whitepunk [10]
3 years ago
7

Add (7х2 – 3x) + (5х – 6).

Mathematics
1 answer:
Masja [62]3 years ago
5 0

Option C: The solution is 7x^{2} +2x-6

Explanation:

The given expression is (7x^{2} -3x)+(5x-6)

We need to solution of the given expression.

The solution of the given expression can be determined by adding the two expressions.

Let us remove the parenthesis.

Thus, we have,

7x^{2} -3x+5x-6

Adding the like terms, we have,

7x^{2} +2x-6

Thus, the solution is 7x^{2} +2x-6

Hence, Option C is the correct answer.

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Please help , thank you !!!!!!1
Lynna [10]
Answer is 7.
55+5X=90
5X=90-55
5X=35
X=35/5
X=7
6 0
3 years ago
QUICK I NEED HELP!!!
Tems11 [23]

Answer:

168

Step-by-step explanation:

photos are enlarged by a certain factor, divide the new width by the old width and youll get the factor (12).

You can then multiply the original height by 12 to get the answer

12 X 14 =168

8 0
2 years ago
Read 2 more answers
A waitress sold 12 ribeye steak dinners and 39 grilled salmon totaling $575.53 on a particular day. Another day she sold 25 ribe
DedPeter [7]

Answer:

The cost of a ribeye steak dinner is $18.60.

The cost of a grilled salmon dinner is $9.03.

Step-by-step explanation:

let r be the cost of a ribeye steak dinner

let g be the cost of a grilled salmon dinner

Represent the two situations using equations:

12r + 39g = 575.53   (equation 1)

25r + 13g = 582.43   (equation 2)

The best method to use for this case is elimination, which is when you get rid of one of the variables by subtracting or adding.

Since the coefficients for "g" are 39 and 13, they can be eliminated if equation 2 was triple itself.

(25r + 13g = 582.43)  X 3

= 75r + 39g = 1747.29  (new equation 2)

Subtract "equation 1" from "new equation 2"

.   75r + 39g = 1747.29

<u>-   12r + 39g = 575.53</u>

.    63r + 0g = 1171.76    <=we only deal with "r" because 0g is nothing

.             63r = 1171.76    <=divide both sides by 63 to isolate r

.                 r = 18.60       <=rounded from 18.599...

The cost of a ribeye steak dinner is $18.60.

Use any one of the equations to solve for "g", the cost of grilled salmon dinners. I will use equation 1.

12r + 39g = 575.53

Substitute r = 18.6

12(18.6) + 39g = 575.53   <=only one variable now

223.2 + 39g = 575.53     <=subtract 223.2 from both sides

39g = 352.33             <=divide both sides by 39 to isolate g

g = 9.03  <=rounded from 9.0341...

The cost of a grilled salmon dinner is $9.03.

4 0
3 years ago
I NEED HELP SOMEONE ASAP
Dvinal [7]

Answer:  x⁴y²⁰

Step-by-step explanation: Distribute the exponent ⁴ over the parentheses

(x y⁴)⁴ becomes x⁴y¹⁶  (multiply exponents)

then take the 4th root of y¹⁶  (divide the exponent of the radicand by the index)  ⁴√y¹⁶  becomes y⁴

Then multiply the factors. Add exponents

x⁴y¹⁶ * y⁴  becomes x⁴y²⁰

8 0
3 years ago
Twenty more than the number n is 125. What is the value of n?<br> 145<br> 125<br> 105<br> 20
sweet-ann [11.9K]

Answer:

105

Step-by-step explanation:

n=105 as 20 more than 105 is 125. Hope it helps!

6 0
3 years ago
Read 2 more answers
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