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3 years ago

Sample Equation Name 1. The sum of 5 and x is 20. What is x?

Mathematics

1 answer:

Mrrafil [7]3 years ago

5 0

Answer:

X = 15

Step-by-step explanation:

5 + X = 20

20 - 5 = 15

X = 15?

5 + 15 = 20

X = 15

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I really need help with this, my teacher doesn't really teach and I'm stumped again.

yarga [219]

Answer:

JMK = 54

JKH = 126

HLK = 90

HJL = 27

LHK = 63

JLK = 27

Step-by-step explanation:

Just use 180 for total angles in each triangle. Vertical angles mean the opposite to 126 is 126 and the other two that make up the inner vertices are (360- 126*2)/2 = 54

So, 126, `16, 54 , 54 are the inner angles in the circle. Just go from there.

5 0

3 years ago

What is the approximate value of 0, if cos 0=8/15 ?

ehidna [41]

Answer:

The approximate value of angle theta is $57.8\°$

Step-by-step explanation:

we have that

$cos(\theta)=8/15$

using a calculator

$\theta=arccos(8/15)=57.8\°$

4 0

3 years ago

The Corner Store sells 4 bottles of energy drinks for $11.56, Bev's sells 6 bottles for $17.94. Which is the better buy?

enyata [817]

Answer:

The corner store.

Step-by-step explanation:

11.56/4 =2.89$

17.94/6=2.99$

corner store sells it for cheaper by 10 cents

5 0

3 years ago

Read 2 more answers

What is the next step in solving 0 = x2 + 6x – 10 by completing the square, after you cut 6 in half?

Lynna [10]

Answer:

see below

Step-by-step explanation:

0 = x^2 + 6x – 10

Add 10 to each side

10 = x^2-6x

Take the coefficient of x

-6

Divide by 2

-6/2 =-3

Square it

(-3)^2 =9

Add 9 to each side

10+9 = x^2-6x+9

We use -3 for the square term

19 = (x-3)^2

Take the square root of each side

±sqrt(19) = x-3

Add 3 to each side

3±sqrt(19) = x

6 0

3 years ago

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1/15.999=x/54.5<br> Does anyone know what to do? I keep getting the answer wrong.

kkurt [141]

Hello!

First, let's write the problem.
$\frac{1}{15.999}=\frac{x}{54.5}$
Let's switch sides now, otherwise, we are going to end up doing it later.
$\frac{x}{54.5}=\frac{1}{15.999}$
Multiply both sides by 54.5.
$\frac{x}{54.5} *54.5 =\frac{1}{15.999}*54.5$
We could also rewrite that as,
$\frac{54.5x}{54.5}=\frac{1\cdot \:54.5}{15.999}$
Simplify.
$\frac{54.5x}{54.5}=x$
$\frac{1\cdot \:54.5}{15.999}=\frac{54.5}{15.999}$
$x=3.40646\dots$
That would be our final answer, we could round it to.
x ≈ 3.40

You can feel free to let me know if you have any questions regarding this!
Thanks!

- TetraFish

8 0

3 years ago

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