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umka21 [38]
3 years ago
15

Please help do step by step please Thx.!

Mathematics
2 answers:
MaRussiya [10]3 years ago
4 0

Answer:

1.8

Step-by-step explanation:

18/10=1.8

marshall27 [118]3 years ago
3 0

Answer:

1.8

Step-by-step explanation:

  1. 18 = 18.0
  2. 18 ÷ 10 = moving the decimal over one place, to the left.
  3. 18.0 ÷ 10 = 1.80
  4. 1.80 = 1.8

I hope this helps!

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Show that the equation x^3+7x-4=0 has a solution between x=0 and x=1
Aleksandr [31]

Step-by-step explanation:

Using the Intermediate Value Theorem, the following is applied:

"If f(x) is a continuous on interval [a,b] and we have two points f(a) and f(b) then there must be some value c such that f(a)<f(c)<f(b).

So here there must be a c such that

f(0) < f(c) < f(1)

Note: F(c)=0, the questions that the function have a solution between 0 and 1, so that means we must have some value, c such that f(c)=0 that exists

Next, plug in the x values into the function

f(0)  =  - 4

f(1) =  {1}^{3}  + 7(1) - 4 = 4

Since cubic functions are continuous and -4<0<4, then there is a solution c that lies between f(0) and f(1)

3 0
2 years ago
Solve the quadratic equation by taking square roots.
Stolb23 [73]

Answer:

see explanation

Step-by-step explanation:

1

Given

2x² - 16 = 0 ( add 16 to both sides )

2x² = 16 ( divide both sides by 2 )

x² = 8 ( take the square root of both sides )

x = ± \sqrt{8} = ± 2\sqrt{2}

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

2

Given

- 5x² + 9 = 0 ( subtract 9 from both sides )

- 5x² = - 9 ( divide both sides by - 5 )

x² = \frac{9}{5} ( take the square root of both sides )

x = ± \sqrt{\frac{9}{5} } = ± \frac{3}{\sqrt{5} }

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

3

Given

6x² - 15 = 27 ( add 15 to both sides )

6x² = 42 ( divide both sides by 6 )

x² = 7 ( take the square root of both sides )

x = ± \sqrt{7}

4 0
3 years ago
Help me guys please. I need to solve for x then find measure of angle.
MrRa [10]

Answer:

I HOPE THIS WILL HELP YOU :)

Step-by-step explanation:

115°=17x-4

adding 4 on both sides

115°+4=17x-4+4

119°=17x

dividing 17 on both sides

119°/17=17x/17

x=7

now we find the measure of angle

17(7)-4

=119-4

=115° same as angle R

5 0
3 years ago
Read 2 more answers
I need help on the top one 25 pts
svet-max [94.6K]
The answer to the question

8 0
4 years ago
Helpppp plzzz it’s so hard
mario62 [17]
A is 26 b is 55 d is 65.7079
3 0
3 years ago
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