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2 years ago

-18 subtracted from - 7

Mathematics

2 answers:

MaRussiya [10]2 years ago

8 0

Answer:

$-7-(-18)\\-7+18\\11$

Step-by-step explanation:

castortr0y [4]2 years ago

5 0

The answer is 11 my friend :)

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Simplify 10:11 as a ratio

BlackZzzverrR [31]

Answer:

10:11

Step-by-step explanation:

10/11 is a reduced fraction, no common factors between the numerator and denominator, so this ratio is already simplified as far as we can go.

8 0

3 years ago

Read 2 more answers

What is the solution set of the equation using the quadratic formula? x2+6x+10=0 {−3+2i,−3−2i} {−6+2i,−6−2i} {−3+i,−3−i} {−2i,−4

olga2289 [7]

Answer:

The solution set of the quadratic function $x^{2}+6\cdot x +10$ is $\{-3+i,-3-i\}$ .

Step-by-step explanation:

Let be a second-order polynomial (quadratic function) is standard form and equalized to zero:

$a\cdot x^{2}+b\cdot x + c = 0$

Its roots can be determined by the Quadratic Formula in terms of its polynomial coefficients, which states that:

$x_{1,2} = \frac{-b\pm\sqrt{b^{2}-4\cdot a\cdot c}}{2\cdot a}$

Given that $a = 1$ , $b = 6$ and $c = 10$ , the roots of the polynomial are, respectively:

$x_{1,2} = \frac{-6\pm \sqrt{6^{2}-4\cdot (1)\cdot (10)}}{2\cdot (1)}$

$x_{1,2} = -3\pm i$

$x_{1} = -3+i$

$x_{2} = -3 -i$

The solution set of the quadratic function $x^{2}+6\cdot x +10$ is $\{-3+i,-3-i\}$ .

8 0

3 years ago

union dues are deducted from a paycheck at a rate of 4.5% of the total earnings each week if a part time employee works 20 hours

romanna [79]

First, you want to find how much the employee is making per week

In this cause, you would multiply 20 × 6

20 × 6 = 120

The employee makes $120 per week.

Then you will need to find what is 4.5% of $120.

Before you multiply, you want to move the decimal place 2 times to the left. You would end up with .045

You would multiply those two numbers

0.45 × 120 = 5.4

$5.4 is the amount of money being deducted to your sub total

$5.4 would be the dues deducted

5 0

3 years ago

Suppose that 30% of students prefer to write with a mechanical pencil. suppose we sample students, one at a time, and stop as so

tia_tia [17]

Probability that first student prefers mechanical pen = 0.30
P(first student does not and second student does) = 0.70 * 0.3 = 0.21)

P( selecting 2 or fweer) = 0.30+ 0.21) = 0.51 or 51%

6 0

3 years ago

A flower bed in your yard is in the shape of a right triangle. The perpendicular sides of the bed measure 14 feet and 11 feet. C

aev [14]

The area of the flower bed is 77 square feet

<h3>How to determine the area?</h3>

The given parameters are:

Shape = Triangle
Perpendicular sides = 14 feet and 11 feet

The area of the flower bed is calculated as:

Area = 0.5 * Product of perpendicular sides

So, we have:

Area = 0.5 * 14 * 11

Evaluate

Area = 77

Hence, the area of the flower bed is 77 square feet