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3 years ago

Please help me with this homework

Mathematics

2 answers:

Pachacha [2.7K]3 years ago

3 0

Yes i think sorry if im wrong

slava [35]3 years ago

3 0

ANSWER:
True/Yes

EXPLANTION:
A function only works when one input (x) is paired with only one output (y). One the table each input is paired with only one output so that makes it a true/yes.

FUN FACT:
A function can still work when the output is paired with more then one input, but cannot work if the input is paired with more then one output.

I hoped this helped and have a great day ;:)

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10°<br> 55°<br> x х<br> Solve for y in the figure above.

andreyandreev [35.5K]

Y=145
Explanation:
A triangle’s angles add up to a total of 180 so you would subtract 55 from 180 and then subtract 90 because of the right angle, then you would end with x=35. Since x and y are supplementary they add to 180...so then you subtract 35 from 180 and then you get y=145.

8 0

3 years ago

1-i need to mix 25% mineral spirits to the varnish i am using what ratio of spirit to varnish am i using? 2-if i use 240 ml of v

zhenek [66]

Answer:

(1) The required ratio of spirit to varnish is 1:3.

(2) You need 80 ml of mineral spirit.

(3) The ratio of tapestries' heights to width is 3:2.

Step-by-step explanation:

(1) If you need to mix 25% mineral spirit to the varnish, then the solution would contain 25% mineral spirit and 75% varnish.

So, $\frac{spirit}{varnish}=\frac{25}{75}$

$=\frac{1}{3}$

Thus, The required ratio of spirit to varnish is 1:3.

(2) If you use 240ml of varnish, then this quantity is 75% of the total solution or ration of varnish to the total solution will be 3:4.

Let $x$ be the quantity of total solution.

Then, $240:x=3:4$ .

⇒ $\frac{240}{x}=\frac{3}{4}$

⇒ $3x=240*4$

⇒ $x=\frac{240*4}{3}$

⇒ $x=320$

That is, total solution is 320 ml.

Now, Spirit = Total solution - Varnish

⇒Spirit = 320ml-240ml

⇒Spirit = 80ml

Hence, if you use 240 ml of varnish, you need 80 ml of mineral spirit.

(3) Robison's tapestries all measure 1.5m long and 1m wide. First, we express dimensions in whole numbers by multiplying them by 10.

Then, dimensions are 15m long and 10m wide.

Now, Height : Width = 15:10

⇒ $\frac{Height}{Width} =\frac{15}{10}$

⇒ $\frac{Height}{Width} =\frac{3}{2}$

Hence, the ratio of tapestries' heights to width is 3:2.

8 0

3 years ago

<img src="https://tex.z-dn.net/?f=%5Csqrt%7B29-12%5Csqrt%7B5%7D" id="TexFormula1" title="\sqrt{29-12\sqrt{5}" alt="\sqrt{29-12\s

SSSSS [86.1K]

$\sqrt{29 \: - \: 12 \sqrt{5} }$

Factor the indicated expression:

$\sqrt{(3 \: - \: 2 \sqrt{5}) ^{2} }$

Simplified the index the root and also the exponent using the number 2.

$\boxed{ \bold{2 \sqrt{5} \: - \: 3}}$

<h3><em><u>MissSpanish</u></em> </h3>

6 0

2 years ago

Read 2 more answers

3. What is the measure of angle B from the right triangle below?

Talja [164]

Answer:

angle B = 78.46°

Step-by-step explanation:

Use the cosine ratio

$cosB=\frac{2}{10} =0.2$

$B=cos^{-1} (0.2)=78.46^{0}$

Hope this helps

8 0

2 years ago

Jerry has taken a random sample of students and determined the number of electives that each student in his sample took last yea

loris [4]

The sample proportion of the the students that took fewer than the mean number of electives is given by the number of people who took less that the mean number of electives (i.e. 7.63) divided by the total number of students in the sample (i.e. 19). The total number of people who took less than 7.63 electives is 10. Therefore, the required sample proportion is 10 / 19.

Read more on Brainly.com - brainly.com/question/1687069#readmore

6 0

3 years ago