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3 years ago

Find each of the following sums and differences. Write your answer in simplest standard form. (Help with b and d)

Mathematics

1 answer:

KIM [24]3 years ago

7 0

Good job, you started on the right track, you just have to finish. You have to combine like terms(anything that's the same like x^3 and x^3, or like 8 and 2) (b): 2x^3+4x^2-9x+4 (d)6x^3-13x^2+11x+10 Hopefully that helps, and I'm sorry I'm bad at explaining

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The quotient of 2 and t

tino4ka555 [31]

Answer: 2t/12

Step-by-step explanation:The quotient of is the result of dividing two terms

The first term is - Twice a number

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3 years ago

What does supplementary mean

murzikaleks [220]

Any two numbers, normally degrees, such as 10° and 170°, that add up to equal 180°

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3 years ago

A boat traveled 128 kilometers in

AlekseyPX

Answer:

The Distance cover by boat in 2 hours and 15 minutes is 72 km

Step-by-step explanation:

Given as :

The Distance cover by boat = 128 kilometer

The time taken is 4 hours

As , Distance = Speed ×Time

So , Speed = $\frac{Diastance}{Time}$

Or, Speed = $\frac{128 km}{4 hours}$

∴ Speed = 32 km per hour

Now, again The boat travel 2 hours and 15 minutes further with speed 32 kmph

So, Time2 = 2 + $\frac{15}{60}$

Or, Time2 = 2 + $\frac{1}{4}$

I.e Time2 = $\frac{9}{4}$ hours

Again , Distance = Speed ×Time

So , Distance = 32kmph × $\frac{9}{4}$ hours

I.e Distance = $(\frac{32\times 9}{4})$ = 72 kilometer

Hence The Distance cover by boat in 2 hours and 15 minutes is 72 km Answer

5 0

2 years ago

#14 write the given sentence as an equation. Tim'S age in 7 years will be three times what it was 19 years ago

kobusy [5.1K]

The first thing we must do for this case is to define variables.
We have then:
x = Tim's age
Now we write the equation:
x + 7 = 3 (x-19)
Answer:
Tim's age in 7 years will be three times what it was 19 years ago:
x + 7 = 3 (x-19)

3 0

3 years ago

the ratio of pine trees to elm trees in a park is 7:11. How many pine trees are there in the park if there are 68 more elm trees

Hitman42 [59]

Answer:

The number of pine tree is 119 and the number of elm tree is 187.

Step-by-step explanation:

The ratio of pine trees to elm trees in a park is 7:11

Let us assume that the number of pine tree is 7x and the number of elm tree is 11x.

It is also given that, there are 68 more elm trees as compared to the pine trees.

i.e $11x=7x+68$