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Ivahew [28]
3 years ago
11

Fiona wrote out the description of each step for her multiplication of the binomial and trinomial (2x – 3)(5x2 – 2x + 7).

Mathematics
2 answers:
laiz [17]3 years ago
6 0

Answer: Fiona made her error in: Step 2.

Step-by-step explanation: This answer is 100% correct on edge.nuity.

Arte-miy333 [17]3 years ago
5 0
I just took the test and the answer is step 2.
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PLEASE HELP ASAP PLEASE WILL MARK BRAINIEST
Sergio [31]

Answer: B

Step-by-step explanation: The angle DCE is a 90 degree angle, and the triangles bisect eachother, meaning they have the same midpoint. Therefore, their angles are the same diagnoly, which means that angle B = angle E and angle D = angle A, so angle D = b

4 0
3 years ago
The quotient of a number x and −1.5  is 21
Andru [333]

<u><em>Answer:</em></u>

x = -31.5

<u><em>Explanation:</em></u>

We are given that the quotient of x and -1.5 is 21

<u>This means that:</u>

\frac{x}{-1.5} =21

To get the value of x, we will multiply both sides of the equation by -1.5

<u>This means that:</u>

\frac{x}{-1.5} * -1.5=21*-1.5

x = -31.5

<u>Note that</u> the value of x must be negative because we are dividing by a negative number and the quotient is positive (-ve/-ve is +ve and +ve/-ve is -ve)

Hope this helps :)

3 0
3 years ago
Teresa runs 3 miles in 25 minutes. At the same rate, how many miles would she run in 20 minutes?
Sedaia [141]

Answer:

2.4 miles

Step-by-step explanation:

3 0
2 years ago
Flying against the wind, an airplane travels 4000 kilometers in 5 hours. Flying with the wind, the same plane travels 5040 kilom
andriy [413]

Answer:the plane in still air is 904 km/h

the rate of the wind is 104 km/h

Step-by-step explanation:

Let x represent the rate or speed of the plane in still air.

Let y represent the rate or speed of the wind.

Flying against the wind, an airplane travels 4000 kilometers in 5 hours. This means that the total speed of the airplane would be (x - y) km/h

Distance = speed × time

Therefore

4000 = 5(x - y)

4000 = 5x - 5y - - - - - - - - -1

Flying with the wind, the same plane travels 5040 kilometers in 4 hours. This means that the total speed of the airplane would be (x + y) km/h. Therefore,

5040 = 4(x + y)

5040 = 4x + 4y - - - - - - - - - 2

Multiplying equation 1 by 4 and equation 2 by 5, it becomes

16000 = 20x - 20y

20160 = 20x + 20y

Subtracting, it becomes

- 4160 = - 40y

y = - 4160/-40

y = 104

Substituting y = 104 into equation 1, it becomes

4000 = 5x - 5 × 104

4000 = 5x - 520

5x = 4000 + 520

5x = 4520

x = 4520/5 = 904

7 0
3 years ago
What is the expression that means the same as 7 less than the square of a number? A. 7-2x B. 7-2× C. 7-x2 D. x2-7 ​
damaskus [11]
Answer d is correct!!!!!
4 0
3 years ago
Read 2 more answers
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