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3 years ago

Determine if the given value makes the equation true or false. For x3 – 8 = 15, if x = 69

Mathematics

2 answers:

Margaret [11]3 years ago

7 0

Answer:

False

Step-by-step explanation:

69 * 3 =207

207 - 8 = 199

x3 - 8 = 199 for x = 69

MrRa [10]3 years ago

6 0

Answer:

(69)(3)−8 = 15

199≠15

False

Step-by-step explanation:

hope it helps, 69(3) is already bigger than 15, then -8 makes it 199, which is definitely not equal to 15.

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The measures of the angles of a triangle are shown in the figure below. Solve for x.

maks197457 [2]

Answer:

57 degrees! : D

Step-by-step explanation:

Every triangle angles(all of them) add up to 190 degrees.

so 33+x+90 degrees.

Why do we add 90 degrees? because there is a little "square on the bottom right explaining that it is a 90-degree angle.

so 33+90=123

so x=180(our original sum) minus 123

and so x=57 degrees

4 0

3 years ago

Read 2 more answers

Some help would be great, also giving brainliest.

Harrizon [31]

The area of the shaded region would be 64m²

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3 years ago

Need help 10-14 idk and to do ??

Kryger [21]

10-14 is -4. Think of it as 14-10=4 but you turn the 4 into a negative number. Hope that answers

4 0

3 years ago

Select the correct answer.

maks197457 [2]

Answer:

See Explanation

Step-by-step explanation:

Your question is poorly formatted. However, I'm able to deduce that your question involves at least 2 algebraic fractions that needs to be simplified.

So, I'll make use of the following expression:

$\frac{3n}{n + 3} + \frac{5}{n - 4}$

When you follow the steps I'm about to provide, you'll arrive at the right answer

Required

Determine an equivalent expression

$\frac{3n}{n + 3} + \frac{5}{n - 4}$

Step 1: Take L.C.M of the denominators

$LCM = (n+3)(n-4)$

Step 2: Evaluate the fractions

$\frac{3n}{n + 3} + \frac{5}{n - 4}$ $= \frac{3n(n-4)+5(n+3)}{(n+3)(n-4)}$

Step 3: Open the brackets at the numerator

$\frac{3n}{n + 3} + \frac{5}{n - 4}$ $= \frac{3n^2-12n+5n+15}{(n+3)(n-4)}$

Step 4: Collect and evaluate like terms

$\frac{3n}{n + 3} + \frac{5}{n - 4}$ $= \frac{3n^2-7n+15}{(n+3)(n-4)}$

<em>Follow the above steps, and you'll be able to solve your question.</em>

6 0

3 years ago

The side lengths of a right triangle are 24, 45 and 51. Determine which is the length of hypotnuse.....

attashe74 [19]

Answer:
51
Step-by-step explanation:
Answer: 51
check: a^2+b^2=c^2 24^2+45^2=51^2 576+2025=2601 2601=2601

5 0

2 years ago