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3 years ago

In the equation y = 3x - 1, what is the value of y when x equals -3? help!!

Mathematics

2 answers:

galina1969 [7]3 years ago

8 0

Y=-10! Hope this helps. Comment if you need the steps!

belka [17]3 years ago

4 0

y = 3x - 1

when x = -3

y = 3.(-3) - 1

y = -9 - 1

y = -10

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Please help ٩(๑òωó๑)۶

otez555 [7]

Answer:

Height of the cliff = 13.66 m

Step-by-step explanation:

Let the height of the cliff is 'x' m and distance between the base of the cliff and the boat is 'y' m.

From right triangle AOC,

tan 30° = $\frac{\text{Opposite triangle}}{\text{Adjacent side}}$

$\frac{1}{\sqrt{3}}=\frac{x}{y}$

y = $x\sqrt{3}$ ------(1)

From right angle triangle BOC,

tan 45° = $\frac{x}{y-10}$

$1=\frac{x}{y-10}$

x = y - 10

y = x + 10 -------(2)

From equations (1) and (2),

$x\sqrt{3}=x+10$

$x(\sqrt{3}-1)=10$

$x=\frac{10}{\sqrt{3}-1 }$

x = 13.66 m

Therefore, height of the cliff is 13.66 m.

7 0

4 years ago

F it rained on 3 days out of 20 days, on what percent of the days did it rain?

Dahasolnce [82]

Percent means per 100/ out of 100.

3/20= x/100

20*5=100
3*5=15

15=x

Final answer: 15%

6 0

3 years ago

Read 2 more answers

What are the zeros of the function f(x) = x2 + 5x + 5 written in simplest radical form?

bija089 [108]

Answer: ( $\frac{-5 +\sqrt{5} }{2}$ , 0), ( $\frac{-5 -\sqrt{5} }{2}$ , 0)

Step-by-step explanation: Let me know if you need an explanation.

4 0

3 years ago

Evaluate the numerical expression. 9.6 – 10.8 ÷ 0.6

madreJ [45]

Hi there!

Answer:

Step-by-step explanation:

divide by the numbers.

10.8-0.6=18.0=18

9.6-18

subtract the numbers.

9.6-18=-8.4

=-8.4

Hope this helps!

-Charlie

Have a great day!

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4 years ago

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The sum of two negative fractions with different denominators is negative 7/10, what are 2 possible fractions?

BaLLatris [955]

-6/10 and -2/20 are two possible fractions

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3 years ago