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3 years ago

How do I find the X? (sorry the triangle is really small-)

Mathematics

1 answer:

Ber [7]3 years ago

3 0

Answer:

C. 98

Step-by-step explanation:

The sum of angles interior to a triangle is 180°, so you have ...

x + 38° + 44° = 180° . . . the sum of the angles (this is your equation)

x + 82° = 180° . . . . . . . . collect terms

x = 180° -82° . . . . . . . . . subtract 82° from both sides of the equation

x = 98° . . . . . . . . . . . . . . do the arithmetic

_____

Comment on the equation

The relations you learn about in math and geometry can all be translated to equations. When you learn "something" is "something else", anytime you have "something", you can always write the equation ...

something = (something else)

When you find out "the sum of angles" is "180 degrees", that means you can write the equation ...

(sum of angles) = 180°

Of course, you find a sum by adding things up. In this case, you're adding up the values of the angles: x, 38°, 44°. The next step is to use the rules of algebra to solve the equation for x.

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The sum of number y and sixty-one

Igoryamba

The answer is y+61 or 61+y.

Hope it helps

6 0

3 years ago

Read 2 more answers

Twice the sum of a number and six decreased by fifteen is the same as eighteen more than the product of five and the number. Fin

Arlecino [84]

Answer:

-9

Step-by-step explanation:

2(n+6) -15 = 5n+18

2n + 12 - 15 = 5n + 18

2n - 3 = 5n + 18

2n = 5n + 21

-3n = 21

n = -9

4 0

3 years ago

The volume of a rectangular prism is 16.328 cm³. The height is 3.14 cm.

Ghella [55]

Answer:

The area of the base is = 5.2 cm²

Step-by-step explanation:

First, we need to know the formula to calculate volume:

$volume=height XBase area$

if we change to our equations to the values we know:

$16.328 = 3.14XB$

Since 3.14 is multiplying B,we can pass it to divide the volume to the left side:

$\frac{16.328}{3.14} =B$

We calculate the operation=

$\frac{16.328}{3.14} =5.2$

And the answer is 5.2 cm²

Let me know if you have any question :D

5 0

3 years ago

Convert these unlike fractions to equivalent like fractions and add them. You must use the LCD to get the answer correct. If pos

Kamila [148]

Answer:

Step-by-step explanation:

The fractions are: $\frac{1}{5}$ and $\frac{2}{3}$ . Let's take a look at the denominators: 5 and 3. The LCD of 5 and 3 is 15. 5x3=15, 3x5=15. So now we would multiply the denominators to make them the same number like this: $\frac{5}{15}$ and $\frac{10}{15}$ . Remember that if you multiply the denominator by a certain number, you must multiply the numerator by the same number as well. For example, in $\frac{2}{3}$ , we multiply 3 by 5 and 2 by 5. Same number. Now with that out of the way, let's work on the equation: $\frac{1}{5}$ + $\frac{2}{3}$ . We know it is the same as $\frac{5}{15}$ and $\frac{10}{15}$ . So now all we do is add the numerators together: 5+10=15 or $\frac{15}{15}$ . Now we have to reduce the fraction. $\frac{15}{15}$ can be reduced to 3 by dividing 15 by 5=3. The final fraction is $\frac{3}{3}$ or can be simply put as 3 since 3/3 is a whole number. That's it - you're done!

7 0

2 years ago

Which expression is equivalent to 5x+10y-15?

Papessa [141]

Answer:

Step-by-step explanation:

I think it's 5(x+2y-3)

5 0

3 years ago