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mestny [16]
3 years ago
15

CAN SOMEONE HELP ME WITH THESE TWO???!??!? PLEaSE????

Mathematics
1 answer:
Rzqust [24]3 years ago
7 0

Answer:

7.A

8.D

Step-by-step explanation:

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How is Addy 4+ -4 similar to adding 4+4 how is it different use the words and models to explain
Margarita [4]

4- (+) (-4) is similar to 4+4 by the rule of addition in integers that is if Negative + Negative then Add the number and put the sign of greater number.

<h3>What is integer?</h3>

Zero, a positive natural number, or a negative integer denoted by a minus sign are all examples of integers. The inverse additives of the corresponding positive numbers are the negative numbers. An integer, pronounced "IN-tuh-jer," is a whole number that can be positive, negative, or zero and is not a fraction. Integer examples include: -5, 1, 5, 8, 97, and 3,043. 1.43, 1 3/4, 3.14, and other numbers that are not integers are some examples. Three categories of integers exist: Zero (0) (0) Good integers (Natural numbers) Integer Negatives (Additive inverse of Natural Numbers).

The rules of addition in integers says,

- + -  = +

by this,

4-(-4)=8

by concept of addition,

4+4=8

To know more about integer,

brainly.com/question/15276410?referrer=searchResults

#SPJ13

3 0
1 year ago
Step by step explaination<br> 2x + 4 &lt; 8
Andrei [34K]

Answer:

X<2

Step-by-step explanation:

2x+4<8

subtract 4 from both sides

2x+4-4<8-4

simplify

2x<4

divide both by 2

2x/2<4/2

x<2

5 0
3 years ago
Show an example where the product of two irrational numbers is a rational number.
romanna [79]

Answer:

√2 x √2 = 2

Step-by-step explanation:

Square roots that aren't perfect squares are irrational.

For Ex: √2 is irrational.

But √2 x √2 = √4 = 2.  2 is rational

Ex. 2 : √8 x √2 = √16 = 4.  4 is rational

4 0
3 years ago
Ethan ordered 4 sub sandwiches for a party.Each 1/2 sandwich is one serving.Does he have enough to serve 7 friends? How much is
soldi70 [24.7K]
He has enough bc if he has 7 friends and 4 subs and u multiply 4 times 2 bc there cut in half he's gonna have 8 pieces 7 for the friends and 1 for him
7 0
3 years ago
Read 2 more answers
A point x is 34m due to east of a point Y . The bearing of a flagpole from x and Y are N18°W And N40°E respectively .
Murljashka [212]

Answer:

The distance of flag post from Y is 38.13 m

Step-by-step explanation:

Consider point Y at the intersection of both lines as shown below. Now the point X lies 34 meter from point Y in east direction.  

Now flag pole at point X lies at a bearing of N18°W. That is at point X from north, flag post makes an angle of 18° towards west.  

Similarly flag pole at point Y lies at a bearing of N40°E. That is at point Y from north, flag post makes an angle of 40° towards east.  

Consider ∆ AXY as right angle triangle. Therefore measure of angle FXY is,  

\angle AXY=\angle AXF+\angle FXY

\therefore 90 \degree=18\degree+\angle FXY

\angle FXY=72\degree

Consider ∆ BYX as right angle triangle. Therefore measure of angle FYX is,  

\angle BYX=\angle BYF+\angle FYX

\therefore 90 \degree=40\degree+\angle FYX

\angle FYX=50\degree

Refer attachment 1.  

From diagram consider the triangle FYX. To find the third angle that is ∠YFX can be calculated by using angle sum property of triangle.

∠YFX+∠FYX+∠FXY=180°

∠YFX+50°+72°=180°

∠YFX=58°

Refer attachment 2.  

Now the distance FY can be calculated using sin rule as follows,  

\frac{\sin X}{FY}=\frac{\sin F}{YX}=\frac{\sin Y}{FX}

Substituting the values,

\frac{\sin 72}{FY}=\frac{\sin 58}{34}=\frac{\sin 50}{FX}

Simplifying first two terms,

\frac{\sin 72}{FY}=\frac{\sin 58}{34}

Cross multiplying,

34\times\sin 72=FY\times \sin 58

\dfrac{34\times\sin 72}{\sin 58}=FY

FY=38.13 m

7 0
3 years ago
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