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Stells [14]
3 years ago
7

How Can I Solve -15 + n = -9

Mathematics
2 answers:
Greeley [361]3 years ago
7 0

Answer:

-6

Step-by-step explanation:

-15 - - 9 = - 6

gavmur [86]3 years ago
6 0

Answer:

N=6

Step-by-step explanation:

First, you move the -15 to the other side along with -9 so you have like terms in the same side. This will make it easier for you to solve for the answer.

To move -15 to the other side, you simply move it over next to -9 and change the sign. Since it was -15, it becomes positive 15. So the equation should look like n= -9 + 15.

Now, the equation looks much easier, right? All you need to do to find the answer is do -9+15, which equals 6. That's it!

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Examine the figure below. If ABC is similar to the DEF, determine the measure of
DerKrebs [107]

Answer:

22 degrees is the answer

Step-by-step explanation:

6 0
3 years ago
Simplify <br><br> (1/2)^2 -6(2-2/3)
Kruka [31]

Answer:

= −31/4

(Decimal: -7.75)

Step-by-step explanation:

5 0
3 years ago
Read 2 more answers
Question is shown in image below. Thank you in advance for your time today.
KengaRu [80]

Alloy #13 contains 7% gold, if means that if we need 2.7kg of this alloy, we will have to use a certain amount of gold. Multiply the percent of gold times the mass of alloy to find how much gold we need:

2.7kg\cdot7\%=0.189kg

It means that we need 0.189kg of gold.

The alloy we have contains 21% of gold. That means that for every 100kg of alloy there are 21kg of gold, use this ratio to find the mass of alloy we need:

0.189kgGold\cdot\frac{100kgAlloy}{21kgGold}=0.9kgAlloy

It means that we need 0.9kg of that alloy.

To find how much magic steel we need, we just have to substract this mass from the mass of Alloy #13:

2.7kg-0.9kg=1.8kg

It means that we need 1.8kg of magic steel.

The answer is: The dwarves need 1.8 kg of magic steel and 0.9 kg of their alloy in order to get 2.7 kg of Dragon Alloy #13.

7 0
1 year ago
Help!!! how do i solve this
Anastaziya [24]

Answer:

  (a) 7.1

  (b) (5/2, 3/2)

  (c) 2

  (d) y = -x +4

Step-by-step explanation:

<h3>(a)</h3>

The length of AC is found using the distance formula:

  d = √((x2 -x1)² +(y2 -y1)²)

  d = √((5 -(-2))² +(-1 -0)²) = √(49 +1) = 5√2 ≈ 7.1

The length of AC is about 7.1.

__

<h3>(b)</h3>

The midpoint has coordinates that are the average of the end point coordinates.

  midpoint BC = (B + C)/2 = ((0, 4) +(5, -1))/2 = (5, 3)/2

  midpoint BC = (5/2, 3/2)

__

<h3>(c)</h3>

The slope is found using the slope formula.

  m = (y2 -y1)/(x2 -x1)

For points A(-2, 0) and B(0, 4), the slope of the segment between them is ...

  m = (4 -0)/(0 -(-2)) = 4/2 = 2

The slope of AB is 2.

__

<h3>(d)</h3>

The slope of line BC is found in the same was as for AB.

  m = (-1 -4)/(5 -0) = -5/5 = -1

The y-intercept of the line is point B, at y=4. So, the equation of line BC is ...

  y = mx +b . . . . . where m is the slope, and b is the y-intercept

  y = -x +4

8 0
2 years ago
Move the numbers to the lines to order them from least to greatest
Yanka [14]

Answer:

-3/2, 1.25, |-9/4|, 2.5, 121

Step-by-step explanation:

Convert all numbers to a decimal

-3/2 = -1.5

|-9/4| = 2.25

2.5 = 2.5

121 = 121.0

1.25 = 1.25

Now put them in order from least to greatest.

-3/2, 1.25, |-9/4|, 2.5, 121

7 0
4 years ago
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