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3 years ago

Select the value of x that makes the equation

Mathematics

1 answer:

SOVA2 [1]3 years ago

7 0

Answer:

-60

Step-by-step explanation:

-3(x + 10) + 2x = 30 becomes -3x - 30 + 2x = 30 after having performed the multiplication. Combining like terms, we get -x = 60, so that x must be -60 (Answer 4)

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Which factors can be multiplied together to make the trinomial 5x2 8x – 4? Check all that apply.

beks73 [17]

Hi,

The Answer to this question is:

(5x - 2)

Hope this Helps!

3 0

3 years ago

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During a sale, a store offered a 15% discount on a tablet computer that originally sold for $460. After the sale, the discounted

Lady bird [3.3K]

The percent of the original price after markup is 98%

<h3>Mark up and discounts</h3>

Given the following parameters

Original price of tablet = $460

If during a sale, a store offered a 15% discount on a tablet, the new price after discount will be:

New price = 0.85 * 460

New price = $391

If the tablet computer was marked up by 15% after the discount, then the price after the markup is given as:

Price after markup = 1.15 * 391
Price after markup = $450

To get the required percent;

x% of 460 = 450
x% = 450/460

x% = 0.978

x = 98%

Hence the percent of the original price after markup is 98%

Learn more on discount here; brainly.com/question/1548141

6 0

3 years ago

Steve will roll a number cube, numbered 1-6, twice. What is the probability

Leni [432]

Answer:

25%

Step-by-step explanation:

First we calculate the probability of rolling a number greater than 3, that is, it can be 4, 5 or 6.

The probability of each number is 1/6, so:

P1 = (1/6) + (1/6) + (1/6) = 3/6 = 1/2

Then, we calculate the probability of rolling a prime number, that is, 2, 3 or 5.

As we have again 3 numbers, the probability P2 will also be 1/2

Then, the final probability is the product of both P1 and P2:

P = P1 * P2 = (1/2) * (1/2) = 1/4 = 25%

3 0

4 years ago

Which equation is the inverse of y = 16x2 + 1?

Llana [10]

Answer:

$y=\frac{\sqrt{x-1} }{4}$

Step-by-step explanation:

The given equation is

$y=16x^2+1$

For this function to have an inverse, we must restrict the domain, say $x\ge0$

We interchange x and y to get,

$x=16y^2+1$

We now make y the subject to get;

$x-1=16y^2$

We divide through by 16 to get;

$\frac{x-1}{16}=y^2$

We now take the square root of both sides to get;

$\pm \sqrt{\frac{x-1}{16}}=y$

$y=\pm \frac{\sqrt{x-1} }{4}$

Since $x\ge 0$ , the inverse function is

$y=\frac{\sqrt{x-1} }{4}$

6 0

4 years ago

Please Help!! what is 4+4?

Artist 52 [7]

Answer:

Step-by-step explanation:

4 0

3 years ago

Read 2 more answers