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sleet_krkn [62]
3 years ago
13

Who ever gets them all right gets brainliest

Mathematics
1 answer:
VMariaS [17]3 years ago
7 0

Answer:

1. 34

2. 2

3. 8.5

4. 52

5. 6.6

6. 71

7. 2

8. 100

9. .5

Step-by-step explanation:

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Evaluate g(3) if g(x) = 2x + 1.
pochemuha
This problem asks, as simply put, the value of the function at x=3. So, plug in three to find your answer:

2(3) + 1 = 7, so g(3) is 7
4 0
3 years ago
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Calculate the value of T, given S equal 7 and D equal 42
kati45 [8]

Answer:

T=6 if S is equal to 7 you can solve it with 6×7 or 7÷42

Step-by-step explanation:

because 6×7=42

5 0
3 years ago
Help me ASAP for this question
steposvetlana [31]

Answer:

It would be the first graph, because if you look at the points on your graph the first one is (0,1), the the next one is (5,2), and so on so forth, that makes your answer the first graph, because that table is showing you the points that are marked

Step-by-step explanation:

4 0
4 years ago
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True or false? A correct answer is worth (2 pts). Explain how you know for the additional (2 pts). Using complete sentence for (
PtichkaEL [24]

<u>answer (in words)</u>

FALSE. the coordinate pair (5, 2) is not a solution to the equation 2x+3y=10. in order to figure out whether or not the statement is true or false, plug the x and y values from the coordinate pair (5, 2) into the given equation, 2x+3y=10. if both sides of the equation end up equal, the coordinate pair is a solution to the equation. if not, the coordinate pair is not a solution to that equation.

<em>(i hope i explained that well enough, i'm better at explaining it algebraically as opposed to putting it into words lol)</em>

<u>answer (algebraic/steps for solving)</u>

first, plug in 5 for x in the equation 2x+3y=10.

  • 2x+3y=10 ⇒ 2(5)+3y=10

then plug in 2 for y.

  • 2(5)+3y=10 ⇒ 2(5)+3(2)=10

now your equation is 2(5)+3(2)=10. all that's left to do is to simplify. you can do this in whatever order you'd like, but i'll start with multiplying 2 · 5.

  • 2(5)+3(2)=10 ⇒ 10 + 3(2) = 10

multiply 3 · 2.

  • 10 + 3(2) = 10 ⇒ 10 + 6 = 10

add 10 + 6.

  • 10 + 6 = 10 ⇒ 16=10

16 and 10 are <em>not</em> equal, therefore (5, 2) is not a solution to the equation 2x+3y=10. in order for a coordinate pair to be the solution to an equation, both sides of the equation need to end up equal after solving and simplifying.

i hope this helps! have a great rest of your day <3

6 0
3 years ago
Am I correct on question #6?
pashok25 [27]

Option A:

\tan(105^\circ)=-(2+\sqrt{3})

Solution:

<u>To evaluate tan(105)°:</u>

105° can be written as sum of 60° and 45°.

tan(105)° = tan(45 + 60)°

Using the summation identity:

$\tan (x+y)=\frac{\tan (x)+\tan (y)}{1-\tan (x) \tan (y)}

$\tan \left(105^{\circ}\right)=\frac{\tan \left(45^{\circ}\right)+\tan \left(60^{\circ}\right)}{1-\tan \left(45^{\circ}\right) \tan \left(60^{\circ}\right)}

We know that, tan(45)° = 1 and tan(60)° = √3

Substitute this in the above equation.

              $=\frac{1+\sqrt{3}}{1-1 \cdot \sqrt{3}}

              $=\frac{1+\sqrt{3}}{1-\sqrt{3}}

To rationalize the denominator multiply by the conjugate \frac{1+\sqrt{3}}{1+\sqrt{3}}.

              $=\frac{(1+\sqrt{3})(1+\sqrt{3})}{(1-\sqrt{3})(1+\sqrt{3})}

Using exponent formula: a^{b} \cdot a^{c}=a^{b+c} and (x-y)(x+y)=x^2-y^2

              $=\frac{(1+\sqrt{3})^2}{(1^2-(\sqrt{3})^2)}

Using exponent formula: (a+b)^{2}=a^{2}+2 a b+b^{2}

              $=\frac{1^{2}+2 \cdot 1 \cdot \sqrt{3}+(\sqrt{3})^{2}}{1-3}

              $=\frac{4+2 \sqrt{3}}{-2}

              $=\frac{2(2+ \sqrt{3})}{-2}

              =-(2+\sqrt{3})

\tan(105^\circ)=-(2+\sqrt{3})

Hence option A is the correct answer.

6 0
4 years ago
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