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3 years ago

PLEASE PLEASE HELP

Mathematics

1 answer:

Alexxandr [17]3 years ago

5 0

Answer:

$14.45

Step-by-step explanation:

Please let me know if you want me to add an explanation as to why this is the answer. I can definitely do that, I just wouldn’t want to write it if you don’t want me to :)

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Find the value of x. Round to the nearest tenth

masha68 [24]

Answer: x= 42.3

Step-by-step explanation:

Sqrt a^2 + b^2 - (2ab)(cos 100)

Sqrt 25^2 + 30^2 - (2)(25)(30)(cos 100)

42.3

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3 years ago

An algebra book weighs 6 oz less

Mashcka [7]

Answer:

Algebra book weighs 24 oz

Grammar book weighs 15 oz

Step-by-step explanation:

algebra = x and grammar = y

x = 2y-6

5x = 8y

5(2y-6) = 8y

10y - 30 = 8y

2y - 30 = 0

2y = 30

y = 15

x = 2(15)-6

x = 30-6

x = 24

8 0

3 years ago

Find the probability of selecting a day that starts with the letter T

Rasek [7]

Answer:

Number of days starting from T are:-

Tuesday

Thursday

So, number = 2

Number of days in a week = 7

So, probability = 2/7

Hope it helps...!!!

Step-by-step explanation:

5 0

3 years ago

Solve the system by graphing

Marta_Voda [28]

$\left\{\begin{array}{ccc}-2x=2y-4\\2x-y=-5\end{array}\right\\\\2y-4=-2x\ \ \ \ |+4\\2y=-2x+4\ \ \ \ |:2\\y=-x+2\\for\ x=0\to y=-0+2=2\to(0,\ 2)\\for\ x=2\to y=-2+2=0\to(2,\ 0)\\\\2x-y=-5\ \ \ \ |-2x\\-y=-2x-5\ \ \ \ |\cdot(-1)\\y=2x+5\\for\ x=0\to y=2(0)+5=5\to(0,\ 5)\\for\ x=-2\to y=2(-2)+5=1\to(-2,\ 1)\\\\Answer:\ (-1,\ 3)\to\ x=-1,\ y=3$

7 0

3 years ago

Solve 7x - 2(x + 1) = 6x + 14 A) -12 B) 12 C) -16 D) 16

anzhelika [568]

7x - 2(x + 1) = 6x + 14
7x - 2x - 2 = 6x + 14
5x - 2 = 6x + 14
6x - 5x = -2 - 14
x = -16

answer
C) -16

3 0

3 years ago