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3 years ago

12

Solve this system of equations using substitution.

1 answer:

motikmotik3 years ago

7 0

A is equal to 20 .....

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What is the trigonometric ratio for sin C

Arturiano [62]

For this case we use the following definition:
sine (x) = (C.O) / (h)
Where,
x: angle
C.O: opposite leg
h: hypotenuse
Substituting values:
sine (C) = (C.O) / (h)
sine (C) = (AB) / (82)
We look for AB by Pythagorean theorem:
AB = root ((82) ^ 2 - (80) ^ 2)
AB = 18
Substituting:
sine (C) = (18) / (82)
Simplifying:
sine (C) = (9) / (41)
Answer:
the ratio is:
sine (C) = (9) / (41)

7 0

3 years ago

Yasmine bought 6 gallons of apple juice after filling up 4 bottles of the same size with apple juice , she had 0.3 gallons of ap

Black_prince [1.1K]

The answer should be 1.425.
Once you subtract 0.3 from 6 it leaves you with 5.7
then do 5.7 divided by 4 and you would get 1.425

7 0

3 years ago

What is the answer to this question

ycow [4]

X = 4 y = - 3

Substitute x for 4 and y for - 3

<u>x² - 4y
</u> 2

<u>4² - 4 *(- 3</u><u>)
</u> 2

<u>16 - ( - 12 )</u>
2

<u>16 + 12</u>
2

<u>28</u> = 14
2

Solution: 14

8 0

3 years ago

Read 2 more answers

10) the LAST ONE Use Distributive Property and Combine Like Terms to simplify the expression below HELP PLZ PLZ PLZ

pishuonlain [190]

Answer:

84n-27

Step-by-step explanation:

-9(1-10n)-2(3n+9)

-9+90n-6n-18

-27+84n

4 0

3 years ago

Read 2 more answers

What is the value of b in the equation (y Superscript b Baseline) Superscript 4 Baseline = StartFraction 1 Over y Superscript 24

shusha [124]

The value of b is -6.

Explanation:

The expression is $\left(y^{b}\right)^{4}=\frac{1}{y^{24}}$

To determine the value of b, we shall solve the expression.

Applying exponent rule, $\left(a^{b}\right)^{c}=a^{b c}$ , we get,

$y^{4b}=\frac{1}{y^{24}}$

Applying exponent rule, $\frac{1}{a^{b}}=a^{-b}$ , we have,

$y^{4b}=y^{-24}$

The expression is of the form, $a^{f(x)}=a^{g(x)}$ then $f(x)=g(x)$

Applying this rule, we get,

$4b=-24$

Dividing both sides by 4, we have,

$b=-6$

Hence, the value of b is -6.

4 0

3 years ago

Read 2 more answers