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3 years ago

Can you pls solve 2 9 17 20 25

Mathematics

1 answer:

Ganezh [65]3 years ago

5 0

17 . Find the values of g(9) and h(-14) and add them together.

The function equations are given to find their values substitute 9 in g(x) and -14 in h(x)

20. They said f(x) = 2x + 9 and f(x) = 15 , which means they are equal to each other.

So write them as 2x + 9 = 15 , and solve the equation to find the value of x.

25. Here all you have to do is substitute 4 into the f(x) equation to find f(4)and you will have your answer.

Hope this helped!

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Plz help will make brainlyist

siniylev [52]

Answer:

A. 6

B. 143

C. The words "less than", "equal to", and "no more than"

Step-by-step explanation:

For a, we would want to first make an equation to represent the problem. It appears you've already figured that out though, so lets solve it!

Subtract 56 on both sides.

-6m=-36

Now divide -36 by -6 to isolate m.

m=6

It will take her 6 minutes.

For B, we need to make another equation.

2.95b<450-28

First, we can subtract 28 from the total, because she has already spent $28.

Now our equation is 2.95b<422

Lastly, just divide both sides by 2.95 to isolate b.

Our solution is 143. So she can buy 143 batteries.

Lastly, for 13, we can say that the words "less than", "equal to" and "no more than" can indicate an inequality in a real word problem.

Hope this helps!

3 0

3 years ago

Please due in 15 minutes please please!!!!!!

liraira [26]

8 girls 12 boys = 20 total
12/20= 3/5 = .6 *100 =
60% is the first answer

34 trees (3 types) +? Scotch pines
= 50 total
50-34= 16/50*2 = 32/100=
32% scotch pines is the second answer

20 grapes 1 pear
13/20*5 = 65/100 =
65% grapes third answer

Found 20 | did not find 5 | 25 total
5/25*4= 20/100=
20% is the fourth answer

4 0

2 years ago

The regular price of an aquarium is $70 and the sale price is $60. what is the percent of discount? (percent of change!!)

Naddik [55]

Let's take the difference between the old and new (70 - 60) to get 10 and then divide this by the old (70) amount...10/70 = .142857 convert to a percent by moving the decimal 2 spaces to the right... 14.29 %

3 0

3 years ago

The sum of a number and five is seventeen what is the number?

RoseWind [281]

The number would be 12

4 0

3 years ago

Read 2 more answers

Find the exact value of cos(sin^-1(-5/13))

son4ous [18]

bearing in mind that the hypotenuse is never negative, since it's just a distance unit, so if an angle has a sine ratio of -(5/13) the negative must be the numerator, namely -5/13.

$\bf cos\left[ sin^{-1}\left( -\cfrac{5}{13} \right) \right] \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{then we can say that}~\hfill }{sin^{-1}\left( -\cfrac{5}{13} \right)\implies \theta }\qquad \qquad \stackrel{\textit{therefore then}~\hfill }{sin(\theta )=\cfrac{\stackrel{opposite}{-5}}{\stackrel{hypotenuse}{13}}}\impliedby \textit{let's find the \underline{adjacent}}$

$\bf \textit{using the pythagorean theorem} \\\\ c^2=a^2+b^2\implies \pm\sqrt{c^2-b^2}=a \qquad \begin{cases} c=hypotenuse\\ a=adjacent\\ b=opposite\\ \end{cases} \\\\\\ \pm\sqrt{13^2-(-5)^2}=a\implies \pm\sqrt{144}=a\implies \pm 12=a \\\\[-0.35em] ~\dotfill\\\\ cos\left[ sin^{-1}\left( -\cfrac{5}{13} \right) \right]\implies cos(\theta )=\cfrac{\stackrel{adjacent}{\pm 12}}{13}$

le's bear in mind that the sine is negative on both the III and IV Quadrants, so both angles are feasible for this sine and therefore, for the III Quadrant we'd have a negative cosine, and for the IV Quadrant we'd have a positive cosine.

8 0

2 years ago

Can you pls solve 2 9 17 20 25​

Can you pls solve 2 9 17 20 25