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3 years ago

Been working on #11 for too long thanks :)

Mathematics

2 answers:

Ludmilka [50]3 years ago

8 0

Answer:3

Step-by-step explanation:

In PEMDAS, or Order of Operations, you first complete math in parentheses, then complete math in exponents. Because the student completed the work in parentheses, he should now do the exponent.

pishuonlain [190]3 years ago

7 0

4 you multiply (3x-1)(3x-1)

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Solve this inequality for x: -46 -8x >22.

olga2289 [7]

Answer:

Step-by-step explanation:

The key to answering this is to know that the only time you'll change the direction of the sign is when you multiply or divide by a negative number.

-46 - 8x > 22

-8x > 22 + 46

-8x > 68

x < 68/-8 (we divided by -8 so the inequality changed direction)

x < -17/2

3 0

3 years ago

Read 2 more answers

Tiwa spent 1 1/2 hours setting up her computer. It took her 3 times as long to install the software. How long did it take Tiwa t

MrRissso [65]

Answer:

Total time spent by Tiwa to set up the computer and install software = 6 hours

Step-by-step explanation:

Given:

Time spent by Tiwa to set up her computer = $1\frac{1}{2}\ hours$

Time spent to install the software is 3 times the time she took to set up the computer.

To find the total time Tiwa took to set up her computer and install the software.

Solution:

Time spent by Tiwa to install the software can be given as:

⇒ $3\times 1\frac{1}{2} \ hours$

In order to multiply mixed numbers we first change them to fractions.

We multiply the denominator to the whole number and add the numerator to it. Then we write the number as numerator of a fraction with the same denominator.

So, $1\frac{1}{2}=\frac{3}{2}$

So, we have:

⇒ $3\times \frac{3}{2}\ hours$

⇒ $\frac{9}{2}\ hours$

Total time spent by Tiwa to set up the computer and install software can be given as:

⇒ $\frac{3}{2}\ hours+\frac{9}{2}\ hours$

Since denominators are same, so we simply add the numerators.

⇒ $\frac{3+9}{2}\ hours$

⇒ $\frac{12}{2}\ hours$

⇒ $6\ hours$

4 0

3 years ago

pogonyaev

120 in 2 minutes is 60 per minute so 60x5 is 300
Answer:300

5 0

2 years ago

The vertex of this parabola is at (-3, -2). which of the following could be its equation?

professor190 [17]

Answer:

Since the vertex is (-3,-2) The x value should be +3

7 0

3 years ago

Read 2 more answers

What is the vertex of the graph y = x^2 + 6x - 5 ?

Dafna11 [192]

Given: y = x^2 + 6x - 5. Then a = 1, b = 6 and c = -5.

The x-coord. of the vertex is given by x = -b / (2a), which here is x = -6 / (2*1) = -3.

Use the given formula y = x^2 + 6x - 5 to find the value of y when x = -3:

y = (-3)^2 + 6(-3) - 5 = 9 - 18 - 5 = -14

Then the vertex is (-3, -14).

6 0

4 years ago