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3 years ago

What’s equivalent to the equation 5x+30=45 PLEASE HELP ME

Mathematics

2 answers:

Leto [7]3 years ago

6 0

Answer:

x+6=9

Step-by-step explanation:

divide all by 5

stira [4]3 years ago

4 0

Answer:

x=3

Step-by-step explanation:

Subtract 30 from both sides.

5x=15

Divide both sides by 5

x=3

Edit: Go with the other answer

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Devon paid for 4 pounds of bananas with a $10 bill. He got back $4.00. What was the cost of 1 pound of bananas? $3.50 $24.00 $1.

Maksim231197 [3]

Answer:

24.00

Step-by-step explanation:

3 0

3 years ago

Find the exact value of cos theta, given that sin thetaequalsStartFraction 15 Over 17 EndFraction and theta is in quadrant II.

vova2212 [387]

Answer:

$cos \theta = -\frac{8}{17}$

Step-by-step explanation:

For this case we know that:

$sin \theta = \frac{15}{17}$

And we want to find the value for $cos \theta$ , so then we can use the following basic identity:

$cos^2 \theta + sin^2 \theta =1$

And if we solve for $cos \theta$ we got:

$cos^2 \theta = 1- sin^2 \theta$

$cos \theta =\pm \sqrt{1-sin^2 \theta}$

And if we replace the value given we got:

$cos \theta =\pm \sqrt{1- (\frac{15}{17})^2}=\sqrt{\frac{64}{289}}=\frac{\sqrt{64}}{\sqrt{289}}=\frac{8}{17}$

For our case we know that the angle is on the II quadrant, and on this quadrant we know that the sine is positive but the cosine is negative so then the correct answer for this case would be:

$cos \theta = -\frac{8}{17}$

5 0

3 years ago

Can u solve it plz thx

Harman [31]

The answer is 77 becuase you have to add all of the sides that are same as the number

6 0

3 years ago

Read 2 more answers

Question is in the photo

Lynna [10]

I got the last answer on the screen.

8 0

3 years ago

Can someone help me please?:)

Effectus [21]

Answer:

can you send it clearly it is blur see

7 0

2 years ago