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4 years ago

HELP ASAP PLZ THNZS!!! ( There r 2 questions)

Mathematics

1 answer:

forsale [732]4 years ago

6 0

Answer:

Step-by-step explanation:

1. Answer below

$2x = \sqrt[3]{125}$

$2x = 5$

$x = \frac{5}{2}$

$x = 2.5$

2. Answer below

$x + 3^{2} = \sqrt[3]{27}$

$x + 9 = 3$

$x = -6$

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Solve this system using substitution:

Sholpan [36]

Answer:

16x- 20y=20

Step-by-step explanation:

20y-20y =0

so answer is 16x

5 0

4 years ago

Read 2 more answers

Solve |p + 2| = 10Solve |p + 2| = 10 {-12} {-8, 8} {-12, 8}

valentinak56 [21]

By definition, we have

$|p+2| = \begin{cases} p+2 &\text{ if } p+2 \geq 0 \\-p-2 &\text{ if } p+2 < 0 \end{cases}$

So, we have to solve two different equations, depending of the possible range for the variable. We have to remember about these ranges when we decide to accept or discard the solutions:

Suppose that $p+2\geq 0 \iff p \geq -2$

In this case, the absolute value doesn't do anything: the equation is

$p+2 = 10 \iff p = 10-2 = 8$

We are supposing $p \geq -2$ , so we can accept this solution.

Now, suppose that $p+2 < 0 \iff p < -2$ . Now the sign of the expression is flipped by the absolute value, and the equation becomes

$-p-2 = 10 \iff -p = 12 \iff p = -12$

Again, the solution is coherent with the assumption, so we can accept this value as well.

3 0

3 years ago

Alexander says that 3x + 4y is equivalent to (3)(4) + xy because of any order, any grouping. Is he correct why or why not

snow_lady [41]

Answer:

Alexander is incorrect because the expressions are not equivalent.

Step-by-step explanation:

If the expression is evaluated for any value of x, y; the result will not be same.

For instance, let assume x = 1 and y = 2

3x + 4y = 3 + 4 = 7

(3)(4) + xy = (3)(4) + (1 * 2) = 12 + 2 = 14

So, the expressions are not the same and Alexander is incorrect.

3 0

3 years ago

How much warmer is 82 than 40 How much warmer

frez [133]

Answer:

42 degrees warmer.

Step-by-step explanation:

82 - 40 = 42

good luck:)

3 0

3 years ago

HELP PLEASEEE NEED THIS ASSPPP!!!!!!

ludmilkaskok [199]

Answer:

-2/9

Step-by-step explanation:

5 0

3 years ago