3 years ago

Round 0.42 to the nearst tenth

Mathematics

1 answer:

Archy [21]3 years ago

4 0

0.4 because if it’s five or more, add one more. If it’s four or less, let it rest.

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3x² + 2x + 2 + 4x² + 5 Simplify

Natalka [10]

Answer: 7x^2 + 2x + 7

Step-by-step explanation:

Combine likes terms that have alike variables and alike exponents.

(3x^2 + 4x^2) + (2x) + (2 + 5)

7x^2 + 2x + 7

6 0

3 years ago

under a dilation, the point (2,6) is moved to (6,18) what is the scale factor of the dilation? enter your answer in the box

Anestetic [448]

Step-by-step explanation:

The equation of line passing through the two points is $\frac{y-y_{1} }{x-x_{1} }=\frac{y_{2} -y_{1}}{x_{2} -x_{1}}$

When substituted,the equation becomes $\frac{y-6}{x-2}=\frac{18-6}{6-2}$

which when simplified is $y=3\times x$

The line clearly passes through origin.

The distance between two points is $\sqrt{(y_{1}-y_{2} )^{2}+(x_{1}- x_{2} )^{2}}$

Distance between origin and $(2,6)$ is $\sqrt{40}$ .

Distance between origin and $(6,18)$ is $\sqrt{360}$

Scale factor is $\frac{distance\text{ }of\text{ }p_{2}\text{ from origin}}{distance \text{ } of \text{ } p_{1}\text{ from origin}}$

So,scale factor is $\frac{\sqrt{360} }{\sqrt{40} }$

which when simplified becomes 3.

6 0

2 years ago

4) Shown below is a series of steps to solve the equation 4x + 2(x - 4) = 28.

love history [14]

It is a! I did this assignment and got it right that’s how I know!

5 0

1 year ago

What's the product of 3 2/3 and 14 2/5 ?<br> A. 52 4/5<br> B. 52 4/15<br> C. 54<br> D. 42 4/5

wlad13 [49]

Answer:

52 4/5

Have a nice day! :)

4 0

2 years ago

Please help i know this is not that hard but i have this and one other thing due in a few minutes and i can't get them both in o

HACTEHA [7]

Answer:

0.2350 x 180 = 42.30

Step-by-step explanation:

4 0

2 years ago

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