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1 year ago

Pleaseee help, question what is the sum of 4x^2 + 2x - 5 and 7x^2 - 5x + 2

Mathematics

2 answers:

Nataliya [291]1 year ago

6 0

Simplification of polynomials.

Polynomials <em>are</em> mathematical expressions made up of many terms.<em>To</em> simplify a polynomial <em>the most, you must collect all</em><em> </em>like terms <em>and rearrange them from highest to lowest power.</em>

<h3>4x² + 2x -5 + 7x² - 5x+2</h3><h3>4x² + 2x -3 + 7x² - 5x+2</h3><h3>11x² + 2x - 3 - 5x</h3><h3>11x² - 3x - 3 ====> Option "A"</h3>

AlladinOne [14]1 year ago

3 0

Answer:

Add the expressions.

11x2−3x−3

Step-by-step explanation:

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Can someone help me with the answer please?

PSYCHO15rus [73]

Answer:

x = 6

Step-by-step explanation:

Using the Secant and Chord intersection theorem we can say that:

(GE) (FE) = (CE) (DE)

(11 + 7) (7) = (2x - 7 + 9) (9)

(18) (7) = (2x + 2) (9)

126 = 18x + 18

108 = 18x

6 = x

Hope this helps!

7 0

3 years ago

4. Jan bought donuts for $6.75. Each bagel cost<br> $0.75. How many bagels did she buy?

Nataly_w [17]

Answer:

9 bagels

Step-by-step explanation:

Divide the price ($6.75) by the price of one bagel ($0.75) to get the amount of bagels Jan bought. (9)

6 0

3 years ago

If x is 32 mm what’s the area of the triangle

Ksju [112]

Answer:

4608*sqrt(3)

Step-by-step explanation:

x + 2x = 3x, so 3x is the height of the triangle. This is a 90-60-30 triangle so the base would be 3x*sqrt(3). To find the area, we can multiply the base with the height and divide by two, so it would be (3x)(3x*sqrt(3))/2 or (9/2)x^2 * sqrt(3). x = 32, and plugging this into the equation gets us to (9/2)32^2 * sqrt(3), which is 4608*sqrt(3).

6 0

4 years ago

If O is an angle in standard position and its terminal side passes through the point

Nataliya [291]

Answer:

-1/3

Step-by-step explanation:

6 0

3 years ago

Donata bought 4 lemons and 4 plums at the local supermarket for a total of $ 21.60. Dan bought 11 lemons and 6 plums at the same

VashaNatasha [74]

you must establish a equation system with the information given , 4x numbers of limon , where x represent the cost of every lemon and 4y numbers of plums , where y represents the cost of plums
now the equation system is 1) 4x+ 4y = 21,60 and 2) 11x+ 6y = 40.29
of the equation 1 you must obtain the value of x, 4x = 21.60+4y ⇒x=21.60/4+4y/4⇒x= 5.4+y
now with the value of x , it is substitute in the equation 2) 11(5.4+y) + 6y = 40.29 , ⇒ 59.4 + 11y + 6y = 40.29 ⇒ 17y = 40.29-59.4⇒ y = -19,11/7⇒ y = -2.73
the value of y is substitute in the equation 1) x = 5.4 + ( -2,73)⇒ x= 2,67, where ,the price of every lemon is $ 2,67

6 0

3 years ago