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Alexus [3.1K]
3 years ago
9

PLEASE HELPPPXPDPD. If -5c+6=-69, what is the value of 6c-15?

Mathematics
1 answer:
crimeas [40]3 years ago
4 0

Answer: 75

Step-by-step explanation:

To find the value of 6c-15, we first want to finc the value of c. Once we find c, we can plug it in and solve.

-5c+6=-69            [subtract both sides by 6]

-5c=-75                  [divide both sides by -5]

c=15

Now that we have the value of c, we can plug it in and solve.

6(15)-15                 [multiply]

90-15                     [subtract]

75

The value is 75.

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Hannah went to the fair with her friends. She spent $7 to enter the fair and decided to play games until she won a stuffed anima
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Answer:

24 games

Step-by-step explanation:

7 to enter

0.5 per game

19 dollars spent

19 = 7 + 0.5x

19 - 7 = 0.5x

12 = 0.5x

x = 12/0.5

x = 24

5 0
3 years ago
Destiny has $ 42 left on her checking account. If she writes a check for $ 59, what will Destiny's balance be?
lakkis [162]

Answer:

$-17

Step-by-step explanation:

4 0
2 years ago
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In the diagram, point D is the center of the medium-sized circle that passes through C and E, and it is also the center of the l
mestny [16]

9514 1404 393

Answer:

  5/8

Step-by-step explanation:

The area of the smaller circles is proportional to the square of the ratio of their diameters. The two smallest circles have diameters equal to 1/4 the diameter of the largest circle. Hence their areas are (1/4)^2 = 1/16 of that of the largest circle.

Similarly, the medium circle has a diameter half that of the largest circle, so its area is (1/2)^2 = 1/4 of the are of the largest circle.

The smaller circles subtract 2×1/16 +1/4 = 3/8 of the area of the largest circle. Then the shading is 1-3/8 = 5/8 of the area of the largest circle.

3 0
3 years ago
I need help on this it’s about trig identities
Cerrena [4.2K]

Answer:

The answer to your question is:

Step-by-step explanation:

1.-

\frac{1 + sin\alpha }{cos\alpha } + \frac{cos\alpha }{1 + sin\alpha } = 2 sec\alpha

\frac{(1 + sin\alpha)^{2} + cos^{2} \alpha  }{cos\alpha (1 + sin\alpha) }

\frac{1  + 2sin\alpha + sin^{2} \alpha+ cos^{2} \alpha  }{cos\alpha + sin\alphacos\alpha  }

\frac{2 + 2sin\alpha }{cos\alpha+ sin\alpha cos\alpha  }

\frac{2(1 + sin\alpha) }{cos\alpha(1 + sin\alpha ) }

\frac{2}{cos\alpha }

2sec\alpha

2.-

   sec²x - tanxsecx

\frac{1}{cos^{2}x } - \frac{sinx}{cosx} \frac{1}{cosx}

\frac{1}{cos^{2} x} - \frac{sinx}{cos^{2}x}

\frac{1 - sinx}{cos^{2}x }

\frac{1 - sinx}{1 - sin^{2}x }

\frac{1 - sinx}{(1 - sinx)(1 + sinx)}

\frac{1}{1 + sinx}

3 0
3 years ago
A phone is 35 percent off which is now worth 78 pounds what was the original price
Black_prince [1.1K]

Answer:

120 pounds

Step-by-step explanation:

65% of y= 78 pounds

\frac{65}{100} × y = 78 pounds

65y = 78  × 100=7800

y= 7800/65= 120 pounds

7 0
3 years ago
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