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2 years ago

Solve y = x2 + 2 for x.

Mathematics

2 answers:

stiks02 [169]2 years ago

6 0

Answer:

x = y - 2 / 2

Step-by-step explanation:

y = 2x + 2

2x + 2 = y

2x = y - 2

x = y - 2 / 2

bearhunter [10]2 years ago

5 0

Answer:

y/2 - 1 = x

Step-by-step explanation:

1. Subtract 2 from both sides. The equation will be y - 2 = 2x.

2. Divide both sides by 2. The equation will be (y - 2) / 2 = x.

3. Simplify the equation to y/2 - 1 = x.

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Can somebody plz help?e

yawa3891 [41]

Answer:

21.4

Step-by-step explanation:

We can solve for x using trigonometry

Here are the <u>Trigonometric Ratios</u>

Remember SOH CAH TOA

Sine = Opposite over Hypotenuse (SOH)

Cosine = Adjacent over Hypotenuse

Tangent = Opposite over Adjacent

We are given the measure of ∠T ( 72° )

We are also given the adjacent side length (6.6) ( Adjacent = the side length that is not the hypotenuse nor the opposite side length )

And we need to find the hypotenuse ( longest side length )

We this information we can use the trigonometric ratio Cosine to solve for x

That being said we want to set up an equation

(remember cosine = adjacent over hypotenuse )

$cos(72)=\frac{6.6}{x}$

Now we solve for x

We can't get rid of the 6.6 itself so we want to multiply each side by x

now we have $xcos(72)=6.6$

Step 2 divide each side by cos(72)

$\frac{xcos(72)}{cos(72)} =x\\\frac{6.6}{cos(72)} \\x=\frac{6.6}{cos(72)}\\cos(72)=0.3090169944\\\frac{6.6}{0.3090169944} =21.35804865\\$

We're left with x = 21.35804865

Finally we want to round to the nearest tenth of a foot and we get that x = 21.4

7 0

3 years ago

X divided by 80 for x = 8/9

Kisachek [45]

I hope this helps you

8/9/80

8/9.80

1/90

5 0

3 years ago

What is the lateral area of the pyramid?

Aleks04 [339]

We have two triangles with base 9ft and height 12.3ft and two triangles with base 11ft and height 11.9ft.

The formula of an area of a triangle:

$A_\triangle=\dfrac{1}{2}bh$

Triangle #1:

b = 9ft and h = 12.3ft. Substitute:

$A_1=\dfrac{1}{2}(9)(12.3)=55.35ft^2$

Triangle #2:

b = 11ft and h = 11.9ft. Substitute:

$A_2=\dfrac{1}{2}(11)(11.9)=65.45ft^2$

The Lateral Area:

$L.A.=2A_1+2_A2\\\\L.A.=2(55.35)+2(65.45)=241.6\ ft^2$

<h3>Answer: B. 241.6 ft².</h3>

6 0

4 years ago

Read 2 more answers

Can the side lengths 12,15, and 13 form a triangle?

Fantom [35]

Answer:

Yes

Step-by-step explanation:

It is a Pythagorean Triple. A Pythagorean Triple is the sides of a triangle that fit perfectly into the Pythagorean Theorem, which is:

a²+b²=c²

12, 13, and 15 are numbers that you should know off the top of your head so if you see a triangle with 2 of those numbers, you instantly know the 3rd number.

<em>~Stay golden~ :)</em>

8 0

3 years ago

Read 2 more answers

V^2+16v+ ?<br> Make the expression a perfect square

Stolb23 [73]

V² + 16v + 64
v² + 8v + 8v + 64
v(v) + v(8) + 8(v) + 8(8)
v(v + 8) + 8(v + 8)
(v + 8)(v + 8)
(v + 8)²

3 0

3 years ago

Read 2 more answers