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Andrews [41]
2 years ago
12

100 POINTS PLEAS please help

Mathematics
2 answers:
mel-nik [20]2 years ago
7 0
  • (-2u³+5u-1)+(7u³-2u²+9)
  • -2u³+5u-1+7u³-2u²+9
  • 5u³-2u²+5u-1+9
  • 5u³-2u²+5u+8

Option A

Kamila [148]2 years ago
6 0

Answer:

\textsf{A)} \quad 5u^3-2u^2+5u+8

Step-by-step explanation:

Given expression:

(-2u^3+5u-1)+(7u^3-2u^2+9)

Remove parentheses:

\implies -2u^3+5u-1+7u^3-2u^2+9

Collect like terms:

\implies -2u^3+7u^3-2u^2+5u-1+9

Combine like terms:

\implies 5u^3-2u^2+5u+8

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The probability that a pupil in class has a calculator is 0.87 what is the probability that a pupil does not have a calculator?
lidiya [134]

Answer:

0.87 1.0

0.13

Step-by-step explanation:

0.13 dont have a calculator

8 0
3 years ago
Ruth decides to test the method of proportions and similar
olga nikolaevna [1]

Answer:

B.

Step-by-step explanation:

7 0
3 years ago
PLS HELP ME ILL GIVE YOU BRAINIEST!!!
kenny6666 [7]

The <em>total surface</em> area of the three figures are 702 square feet.

<h3>How to estimate the amount of metal needed to produce a given amount of figures</h3>

According to this problem, we are required to determine the amount of metal needed to build three pieces with the dimensions presented in the figure.

In this case, we need to estimate the <em>total</em> surface area (A_{T}), in square feet, required for the production of the three pieces, that is, the product of the number of pieces (<em>n</em>), no unit, and the surface area of each piece (<em>A</em>).

Now we proceed to calculate the total surface area:

A_{T} = n\cdot A

A_{T} = 3\cdot \left[(5\,ft)\cdot (8\,ft) + (2\,ft)\cdot (8\,ft)+(8\,ft)\cdot (7\,ft)+(3\,ft)\cdot (8\,ft) \\

+(5\,ft)\cdot (8\,ft)+2\cdot (3\,ft)\cdot (5\,ft) + 2\cdot (4\,ft)\cdot (2\,ft) + (3\,ft)\cdot (4\,ft) ]

A_{T} = 702\,ft^{2}

The <em>total surface</em> area of the three figures are 702 square feet. \blacksquare

To learn more on surface areas, we kindly invite to check this verified question: brainly.com/question/2835293

7 0
2 years ago
Read 2 more answers
The dance committee of Pine Bluff Middle School earns \$72$72 from a bake sale and will earn \$4$4 for each ticket they sell to
jeyben [28]

Answer:

Inequality is 4t+72>400

Solution is C: t > 82

Step-by-step explanation:

Let the number of tickets = t

It is given that the committee earns $4 per ticket. That is, they earn 4t dollars.

Also, the committee earns $72 from the bake sale.

So, the total income is 4t+72 dollars.

Since, the dance will cost $400.

So, the total earning must be greater than $400.

Thus, the inequality for the situation is given by, 4t+72>400.

So, on solving, we have,

4t+72>400

i.e. 4t>328

i.e. t > 82.

Thus, the solution of the inequality is t> 82

Hence, option C is correct.

6 0
3 years ago
Read 2 more answers
Trevor paints 1/6 of the fence. how many days will it take for him to paint 3/4 of it
Levart [38]
4 and a half days 

3/4 ÷ 1/6 =
3/4 × 6/1=
18/4= 
4.5 days

hope this helps :)
4 0
3 years ago
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