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3 years ago

Manuela solved the equation below. 2(×+2)=×-4 What is the solution to Manuela’s equation?

Mathematics

2 answers:

Bumek [7]3 years ago

6 0

Equation solving

2 (x +2) = x - 4
2 x + 4 = x - 4
2 x - x = -4 - 4
x = - 8

Answer = x = -8

Lorico [155]3 years ago

4 0

2(x + 2) = x - 4

2x + 4 = x - 4

2x - x = -4 - 4

x = -8

Solution: x = -8

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If sine theta equals three over four, what are the values of cos θ and tan θ?

ratelena [41]

Answer:

In words, Cosine theta equals plus or minus square root of seven over 4,tangent theta equals plus or minus three over root seven

Step-by-step explanation:

Given that sin ∅ =3/4 It means the ratio of the opposite side to the hypotenuse side is 3:4.

Using the Pythagoras theorem we can calculate the hypotenuse adjacent as follows.

a²+b²=c²

a²=c²-b²

a²=4²-3²

a²=16-9

a²=7

a=√7

Then Cos ∅= opposite/ adjacent

=√7/4

Then Tan ∅ = opposite/adjacent

=3/√7

In words, Cosine theta equals plus or minus square root of seven over 4,tangent theta equals plus or minus three over root seven.

7 0

3 years ago

Substitute the known value of x into y=4x+20. Then solve for y entering the equation in simplest form

scoray [572]

Answer:

$y=24,$ when $x=1$ .

Step-by-step explanation:

Given: $y=4x+20$

To find: Value of $y$ , substituting the known value of $x$

We have,

$y=4x+20 ...(i)$

Putting $x=1$ in equation $(i)$ , we get

$y=4(1)+20$

$\implies y=4+20$

$\implies y=24$

Hence, the value of $y$ is $24$ , when the value of $x$ is $1$ .

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3 years ago

The Anderson family is preparing for a family reunion. They think they will need 22 juice boxes for every 6 children who attend.

AleksandrR [38]

If they need 22 boxes for every 6 kids the they would need 44 boxes for every 12 kid

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3 years ago

12% of what number is 36

ryzh [129]

300, 36 divided by 0.12 (12%) is 300

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3 years ago

Read 2 more answers

F (×)=-2×+1/3 for ×=-5

julia-pushkina [17]

The answer is 31/3 or 10⅓

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3 years ago