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3 years ago

How do you solve 4x=15 for x.

Mathematics

2 answers:

alexgriva [62]3 years ago

5 0

You divide each side of the equation by 4 .
Then you have

<em>x = 15/4</em> or 3.75

ELEN [110]3 years ago

5 0

Yeah AL2006 was right you have to divide 4 on both sides because when a variable is connected to a number like that with no sign between them it is multiplication and the opposite of multiplication is division and 4 divided by 4 cancels out because it is 0. 15 divided by 4 is 3.75.

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Whats 3.8412 in place values

ELEN [110]

3 in the hundred-thousand place, 8 in thousands place, 4 in the hundreds place, 1 in the tens place, 2 in the one's place.

5 0

2 years ago

The total cost after sales tax to fix Azar’s computer is represented by the expression 0.08(55h) + 55h, where h represents the n

sineoko [7]

Answer:

1= 8% 2= 0.08(55h) is the sales part.

Step-by-step explanation:

4 0

2 years ago

Two angles are complementary. The measurement of ∠GHI is (5x+6)∘ and ∠JKL measures (3x+4)∘. What are the measures of the two ang

Alex777 [14]

Answer:

Angle GHI measures 56º, and angle JKL measures 34º.

Step-by-step explanation:

Complementary Angles:

If two angles are complementary, the sum of their measures is 90º.

∠GHI is (5x+6)∘ and ∠JKL measures (3x+4)∘.

Since they are complementary:

$5x + 6 + 3x + 4 = 90$

$8x + 10 = 90$

$8x = 90 - 10$

$8x = 80$

$x = \frac{80}{8}$

$x = 10$

Measures:

GHI: 5*10 + 6 = 50 + 6 = 56º

JKL: 3*10 + 4 = 30 + 4 = 34º.

Angle GHI measures 56º, and angle JKL measures 34º.

5 0

2 years ago

When a die is rolled, what is the theoretical probability that number five will be rolled? <br><br>

Marta_Voda [28]

Answer: 1/6

Step-by-step explanation: there is 6 faces on a standard die, one of them is 5.

7 0

1 year ago

What is the area of this figure?

KatRina [158]

Hi!

I have attached 2 images that should help you understand :)

First, look at the edits I made to the image you posted. I separated the shape into smaller shapes so that we can find the area of each individual one.

Let's start with the rectangle.

To find the area of a rectangle, multiply the width times the height.
10 · 4 = 40

Rectangle = 40cm

Next up, the red triangles.

I have included another image showing the triangles combined into rectangles. So we can find the area of the triangles just like we would rectangles!

(let me know if you don't understand how I found the width + height of the triangles)

5 · 10 = 50

Red triangles = 50cm

And finally, the green triangles.

8 · 7 = 56

Green triangles = 56cm

Add it all together and you get...

40 + 50 + 56 = 146

The answer to the question is 146cm.

Next time you are having trouble with something like this, picture the triangles as rectangles! :)

3 0

2 years ago