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3 years ago

Help Plz I will give 10 Points and Brainliest!!!

Mathematics

1 answer:

Anettt [7]3 years ago

7 0

Answer:

-61

Step-by-step explanation:

2+7*(-9)

2+-63

=-61

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Given sin 0 and angle 0 is in Quadrant II, what is the exact value of cos 0 in

Anna007 [38]

sin = 3/7

1 = sin²0 + cos²0

cos²0 = 1 - 9/49

cos²0 = 40/49

cos0 = √(40) / 7

since its in Quadrant 2 the sin is positive and cos is negative

cos0 = - √(40) / 7

4 0

2 years ago

Solve.

Serggg [28]

Answer:

The solution is (4, 0)

Step-by-step explanation:

Using Linear combination method to solve:

$2d + e = 8\\d - e = 4\\$

Since "e" have the same coefficient in both equation with opposite operator; we will add.

$(2d + d) + (e - e) = (8 + 4)\\3d = 12\\$

Divide both side by coefficient of d which is 3

$\frac{3d}{3} = \frac{12}{3} \\d = 4\\$

Since d = 4; put 'd' into any of the equation to get 'e'

$2d + e = 8\\2(4) + e = 8\\8 + e = 8\\e = 8 - 8\\e = 0\\$

Therefore, the solution is (4, 0)

5 0

3 years ago

Write the rational number as a decimal -8/5 -9 3/8 -9/11 6 7/27

marissa [1.9K]

$-\frac{8}{5}$ = -1.6

$-9\frac{3}{8}$ = -11.625

$-\frac{9}{11}$ = -0.81818...

$6\frac{7}{27}$ = 2.4814

7 0

2 years ago

Holly and her 2 brst friends go to dinner. Their total bill is 31.84. They use a coupon for 15% off the total. If they split the

Tresset [83]

ANSWER:

$9.0.

Each person will owe $9.0.

STEP-BY-STEP SOLUTION:

Total amount of people:
= 3

Total bill:
= $31.84

Discount off total bill:
= 15%

Total bill after discount:
= 31.84 × ( 100% - 15% )
= 31.84 × 85%
= 27.064

Total bill after discount split evenly / Amount each person will owe:
= 27.064 ÷ 3
= 9.0213 ( 3 repeater )
= $9.0 ( rounded to the nearest tenth )

6 0

3 years ago

Ddasdsfasd NFLSD kmsdn.nsd

Lelechka [254]

Same. Same. Just like me

6 0

3 years ago