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3 years ago

Xminus9yequals 19 8yminus5xequals 16

Mathematics

1 answer:

Brilliant_brown [7]3 years ago

4 0

Answer:

x - 9 = 19 x = 28

8y -5x = 16 idk but what i do know is this...

Step-by-step explanation:

8 x 5 - 5 x 5 = 15 & 8 x 4 - 5 x 3 = 17

so if u want to try to put in some numbers u might find it.

but it would be better if i had answer choices.

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Answer:

P= -m-3

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3 years ago

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s2008m [1.1K]

Answer:

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Step-by-step explanation:

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3 years ago

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Sophie [7]

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1 year ago

Calculate the length b to two decimal places.

Andrej [43]

Answer:

B. 21.64

Step-by-step explanation:

We have been given a triangle and we are asked to find the length of AC (b).

We will use law of cosines to find the length of side AC.

$c^{2}=a^{2}+b^{2}-2ab \text{ cos }\theta$

Upon substituting our given values in the formula we will get,

$(AC)^{2}=15^{2}+12^{2}-2\times 15\times 12 \text{ cos}(106)$

$(AC)^{2}=225+144-360\text{ cos}(106)$

$(AC)^{2}=369-360(-0.275637355817)$

$(AC)^{2}=369+99.22944809412$

$(AC)^{2}=468.22944809412$

Upon taking square root of both sides of our equation we will be get,

$AC=\sqrt{468.22944809412}$

$AC=21.6386101238993629\approx 21.64$

Therefore, the length of b is 21.64 and option B is the correct choice.

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3 years ago

The Queen Mary is a large cruise ship that has 8,123,700 cubic feet of cargo space. Express this number in scientific notation.

mixer [17]

<span>8,123,700 = 8.1237 x 10^6
so answer is </span>D. 8.1237 x 10ˆ6
hope it helps

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3 years ago

Read 2 more answers