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Paladinen [302]
3 years ago
13

2. If h(x) = -3x2 - 5x -5, find h(-2).

Mathematics
1 answer:
Vitek1552 [10]3 years ago
5 0

Answer:

-1

Step-by-step explanation:

-3X2 -5(-2)-5

-6+10-5

-11+10

-1

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On Monday, it took 5 builders 3 in a half hours to build a wall.
mrs_skeptik [129]

Answer:

£83.70

Step-by-step explanation:

→ First step is to find the amount of hours it takes for one builder

We know it takes 5 builders 3\frac{1}{2} hours so 1 builder would take 5 × 3\frac{1}{2} which is \frac{35}{2} hours so it takes one builder 17.5 hours to builder a wall

→ Now we know how long one work takes we need to find out the time for 2 builders

1 builder = 17.5 hours

2 builders = 17.5 ÷ 2 = 8.75 hours

So 2 builders take 8.75 hours

→ We know that each builder is paid £9.30 for each or part hour they work so

9.30 hourly pay rate × 9 hours work of work = £83.70

Each worker will be paid £83.70

6 0
3 years ago
Ann thought of a number N, multiplied it by 5 and added 7. Then she told the result R to Jim.
Brrunno [24]

Answer:

Domain and range are the set of all real numbers.

Step-by-step explanation:

Given that Ann thought of a number N, multiplied it by 5 and added 7. Then she told the result R to Jim

Here no restriction is mentioned for the number N.

It can be any number but real.

Hence we can say that domain is the set of all real numbers

For range let us calculate y for any x

If Ann thought of x as the number then

she would multiply by 5 to get 5x and add 7 to get 5x+7

Hence y =5x+7

Since y has no exception here range can also be the set of all real numbers

4 0
3 years ago
Write a function rule for "the output is six times the input".
Romashka [77]

Answer:

y=6x

Step-by-step explanation:

In this function, the input is the variable x. The problem says that the output is six times the input, so we will need to multiply the input by 6. To write this as a function, set the output (y) equal to 6 times the input (x):

3 0
3 years ago
Find the area of the triangle that has a base of 4.2 mm and a height of 1.5 mm. 2.85 mm2 6.3 mm2 3.15 mm2 5.7 mm2
Advocard [28]

Answer: 3.15 mm²

Step-by-step explanation:

First, we multiply the height by the base: 4.2 x 1.5 = 6.3

But, since this is a triangle, we have to divide this number by 2: 6.3 / 2 = 3.15

Hope this helps you!

4 0
4 years ago
Read 2 more answers
Samuel may either take a bus or walk to work. B represents bus, and W represents walk. He
slavikrds [6]

Answer:

{BBB, BBW, BWB, BWW, WWW, WWB, WBW, WBB}

<em>This is the correct answer! I just took the test! Good luck!!!</em>

5 0
3 years ago
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