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inna [77]
2 years ago
10

Which expression is equivalent to 13 - (-21) ?

Mathematics
2 answers:
kifflom [539]2 years ago
5 0
The answer is 'Choice A'
BaLLatris [955]2 years ago
4 0

Answer:

Choice A

Step-by-step explanation:

Negative times negative equals positive, is -21 would change to positive 21

Hope this helps!

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PLEASE HELP! SEE THE IMAGES BELOW! 30 POINTS
Mkey [24]

Answer:

d for the first and c for the second

Step-by-step explanation:

1. both are solid lines so it is or equal to something. the first line is going down by -3 and crosses the y axis at -3 so it is _>_ - 3x-3

the second line is going down at -1/2 and crosses the y axis at 2 so it is       _<_ -1/2x+2


2. The point where the two lines cross is at (2.5, -6.5)

6 0
3 years ago
What is i^15 for imaginary numbers
allochka39001 [22]

Answer:

1^15 is 15

Step-by-step explanation:

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3 years ago
Sebastian is going to choose the color pattern
jeka94

Answer:

use blue red blue red

Step-by-step explanation:

5 0
3 years ago
Can someone explain/show me how to do this?Absolute Value Functions
dedylja [7]
Domain: -∞<x<∞
Range: -∞<x<∞
X-Intercept: x=0
Y-Intercept: y=0
Increasing on the interval of 0<x<∞
<span>Decreasing on the interval of -∞<x<0


</span>When A=0, the graph equals y=0
- When A is greater than 1, it makes the graph skinnier than <span>f(x)=|x|
- When A is less than 1 but greater than 0, it makes the graph fatter than </span><span>f(x)=|x|
- When A turns negative, it flips the graph upside down. 

-When B is greater than 0, it translates the graph to the right
- When B is less than 0, it translates the graph to the left

When C is greater than 0, the graph moves upwards
When C is less than 0, the graph moves downwards</span>

3 0
3 years ago
Find the measures of the angles of a triangle if the measure of one angle is twice the measure of a second angle and the third a
guapka [62]

Answer:

<h2><em> 38°, 66° and 76°</em></h2>

Step-by-step explanation:

A triangle consists of 3 angles and sides. The sum of the angles in a triangle is 180°. Let the angle be <A, <B and <C.

<A + <B + <C = 180° ...... 1

If the measure of one angle is twice the measure of a second angle then

<A = 2<B ...... 2

Also if the third angle measures 3 times the second angle decreased by 48, this is expressed as <C = 3<B-48............ 3

Substituting equations 2 and 3 into 1 will give;

(2<B) + <B + (3<B-48) = 180°

6<B- 48 = 180°

add 48 to both sides

6<B-48+48 = 180+48

6<B = 228

<B = 228/6

<B =38°

To get the other angles of the triangle;

Since <A = 2<B  from equation 2;

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Also <C = 3<B-48 from equation 3;

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<C = 114-48

<C = 66°

<em>Hence the measures of the angles of the triangle are 38°, 66° and 76°</em>

4 0
3 years ago
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