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3 years ago

Many Irish-Catholic and Chinese immigrants helped improve the infrastructure of the

Mathematics

2 answers:

alekssr [168]3 years ago

5 0

Answer:

The Transcontinental Railroad

Step-by-step explanation:

Hope it helps you :)

cluponka [151]3 years ago

5 0

Answer:

The Transcontinental Railroad

Step-by-step explanation:

Hope it helps u :)

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Help!!!!!!!!!!!!!!!!!!!!

Murrr4er [49]

I think the answer is about 80 cents

4 0

3 years ago

Use the quadratic formula to solve the equation. -2x^2 -x+7=0

Radda [10]

Answer: $x_1=1.63\\x_2=-2.13$

Step-by-step explanation:

1. The quadratic formula is shown below:

$x=\frac{-b+/-\sqrt{b^{2}-4ac}}{2a}$

2. Given the quadratic equation given in the problem, you have that:

$a=-2\\b=-1\\c=7$

3. Therefore, when you substitute the values shown above, you obtain the following result:

$x=\frac{-(-1)+/-\sqrt{(-1)^{2}-4(-2)(7)}}{2(-2)}$

$x_1=1.63\\x_2=-2.13$

4 0

3 years ago

Read 2 more answers

I need answer ASAP!!!!

frutty [35]

The answer is 1 since both expressions are equal.

7 0

4 years ago

Select the correct answer.

andrew-mc [135]

Answer:

OPTION C

Step-by-step explanation:

We have the following rules:

$\sqrt[a]{x} = x^{\frac{1}{a}$ and

$x^a . x^b = x^{a + b}$

OPTION A: $x \sqrt[7]{x}$

= $x . x^{\frac{1}{7}$

= $x^{1 + \frac{1}{7}$

$= x^{\frac{8}{7}$ $\ne x^{\frac{9}{7}$

So, it can be eliminated.

OPTION B: $\bigg ( \frac{1}{\sqrt[7]{x}} \bigg )^9$

= $\bigg ( \frac{1}{x^{\frac{1}{7}}} \bigg )^9$

= $\bigg ( x^ {\frac{-1}{7}} \bigg )^9$

= $x^{\frac{-9}{7}}$

So, this option is also eliminated.

OPTION C: $x . \sqrt[7]{x}$

= $x . x^{\frac{1}{7}}$

= $x^{1 + \frac{1}{7}}$

= $x^{\frac{9}{7}}$

So, OPTION C is the answer.

5 0

3 years ago

The solution set of the quadratic inequality x squared minus 5 x plus 4 less or equal than 0 is

BigorU [14]

Answer:

it is equal to 0

7 0

3 years ago