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3 years ago

What are the solutions to the equation? x2 + 6x = 40

2 answers:

8 0

Just plug in the numbers:

4: 16 + 24 = 40 YES

5 = 25 + 40 ≠ 40 NO

8: 64 + 48 ≠ 40 NO

10: 100 + 60 ≠ 40 NO

So A. is the correct answer. Just to be sure:

-10: 100 + ( - 60) = 40

Your answer is A. Hope that helps! :)

Zielflug [23.3K]3 years ago

6 0

A............................

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Solve GHI. Round the answer to the nearest hundredth.

Sedaia [141]

Answer:

Part 1) $HI=15\ units$

Part 2)

Part 3) $< I=28.07\°$

The answer is the option A

Step-by-step explanation:

Part 1) Find the measure of side HI

Applying the Pythagoras Theorem

$GI^{2} =GH^{2}+HI^{2}$

substitute the values and solve for HI

$17^{2} =8^{2}+HI^{2}$

$HI^{2}=17^{2}-8^{2}$

$HI^{2}=225$

$HI=15\ units$

Part 2) Find the measure of angle G

In the right triangle GHI

$cos(G)=\frac{GH}{GI}$

substitute the values

$cos(G)=\frac{8}{17}$

$G=arccos(\frac{8}{17})=61.93\°$

Part 3) Find the measure of angle I

Remember that

The sum of the interior angles of a triangle must be equal to 180 degrees

substitute the values

$61.93\°+90\°+< I=180\°$

$< I=180\°-(61.93\°+90\°)=28.07\°$

7 0

4 years ago

Can someone help me

Nikolay [14]

Omg this looks hard

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3 years ago

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Given that E=MC find E when M=20 and C =2.5<br><br>

tresset_1 [31]

Answer:

50 or 125

Step-by-step explanation:

if u want E=MC then it would be 20 ×2.5=50

if u what to find E=MC² then it would be 20×2.5×2.5 =125

ACCORDING TO ME THIS SHOULD BE THE ANSWER, BUT NOT QUITE SURE ABOUT THIS.

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3 years ago

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Question 4 graph on a number line

ozzi

Answer:

The third one

Step-by-step explanation:

You would first mark -2 on a graph then the circle would be open because the sign is just greater than, then the arrow would be pointing to the right, because that is the way your equation shows it

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3 years ago

899 round to the nearest ten

algol [13]

900 because 9 is greater than 5 so it rounds to my answer.

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3 years ago

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