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1 year ago

1a. What is the product of 2x - 3 and 5x^2 - 2x + 6? Work and Answer:

Mathematics

2 answers:

kiruha [24]1 year ago

8 0

Answer:

I dont know.. sorry.......

levacccp [35]1 year ago

8 0

$▪▪▪▪▪▪▪▪▪▪▪▪▪ {\huge\mathfrak{Answer}}▪▪▪▪▪▪▪▪▪▪▪▪▪▪$

$(2x - 3) \times (5 {x}^{2} - 2x + 6)$

$10x {}^{ 3} - 4 {x}^{2} + 12x - 15 {x}^{2} + 6x - 18$

$10 {x}^{3} - 19 {x}^{2} + 18x - 18$

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Can some one explain how to do this?

Delvig [45]

Answer:

see explanation

Step-by-step explanation:

Using the tangent and sine ratios in the right triangle EFG

tan60° = $\frac{opposite}{adjacent}$ = $\frac{FG}{EG}$ = $\frac{28}{EG}$ ( multiply both sides by EG )

EG × tan60° = 28 ( divide both sides by tan60° )

EG = $\frac{28}{tan60}$ ≈ 16.2 in ( to the nearest tenth )

--------------------------------------------------------------

sin60° = $\frac{opposite}{hypotenuse}$ = $\frac{FG}{EF}$ = $\frac{28}{EF}$ ( multiply both sides by EF )

EF × sin60° = 28 ( divide both sides by sin60° )

EF = $\frac{28}{sin60}$ ≈ 32.3 in ( to the nearest tenth )

3 0

2 years ago

Suppose a family drives at an average rate of 60 mi/h on their way to visit relatives and then an average rate of 40 mi/h on the

hammer [34]

Answer:

Part A) 2 hours

Part B) d/60 hours

Part C) 48 miles/hour

Step-by-step explanation:

Part A) Let "d" be the distance in miles the family traveled to visit their relatives. How many hours did it take to drive there?

we know that

Let

x ----> the time it take on their way to visit relatives in hours

y ---> the time it take on the way back in hours

we know that

The distance of the way to visit is equal to the distance of the way back

The speed multiplied by the time is equal to the distance

60x=40y -----> equation A

y=x+1 -----> equation B

substitute equation B in equation A and solve for x

60x=40(x+1)

60x=40x+40

20x=40

x=2 hours

Find the value of y

y=2+1=3 hours

d=60x

The time it take on their way to visit relatives is 2 hours

The time it take on the way back is 3 hours

Part B) In terms of "d," how many hours did it take to drive there?

we have that

The distance is equal to the speed multiplied by the time

d=60x

Solve for x

x=d/60 hours

Part C) Write and solve an equation to determine the distance the family drove to see their relatives. What was the average rate for the entire trip?

To find the average rate for the whole trip we will need the total distance and the total time

The distance of the way to visit is

d=60x

substitute the value of x

d=60(2)=120 miles

The total distance is

120(2)=240 miles

we know that the total time is

2 + 3 =5 hours

The average rate for the complete trip is

240/5=48 miles/hour

5 0

2 years ago

Read 2 more answers

What is the equation of the midline for the function f(x) ? f(x)=3cos(x)−2.5

fredd [130]

Y= -2.5
the midline is basically the line where the distance is the same to the line from the max and the min

7 0

2 years ago

Read 2 more answers

How does supply and demand affect consumers?

Aleks [24]

The answer would be choice A.

7 0

2 years ago

Read 2 more answers

Help please . plelase

Nezavi [6.7K]

Answer:

4. 110 slices

5. B.12.8 mi

Step-by-step explanation:

For question for you divide the number of slices, 176, by the number of loafs, 8. this give give you a total of 22. you then take 22 and multiple if by 5, leaving your answer to 110 slices of bread.

For question 5, you multiple 8 kilometers by 1.6 kilometers, which is 12.8 miles.

I hope this helps :))

3 0

2 years ago

1a. What is the product of 2x - 3 and 5x^2 - 2x + 6? Work and Answer:​

1a. What is the product of 2x - 3 and 5x^2 - 2x + 6? Work and Answer: