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3 years ago

X - 2y = -3 2x + y = -1

Mathematics

2 answers:

lianna [129]3 years ago

7 0

Answer:

it can only be simp[lified

so it will be

(x+2x)+(y+2y)=-3-1

3x+3y=-4

cannot be solved further

Step-by-step explanation:

bezimeni [28]3 years ago

3 0

Answer:

y = 1

x = -1

Step-by-step explanation:

x - 2y = -3, then x = 2y - 3

2x + y = -1

substitute for x:

2(2y - 3) + y = -1

4y - 6 + y = -1

5y = 5

y = 1

x = 2 - 3 = -1

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Find the area of the shape . ( exact answer )

tangare [24]

Answer:

84.78

Step-by-step explanation:

A=π r²

6*6(r²)=36

36*3.14(π)=113.04

113.04*3/4(it is 3/4 of a circle)=339.12/4

339.12/4=84.78

7 0

4 years ago

Use set builder notation to represent the following set. {... -3, -2, -1, 0} {x | x Z, x ≤ 0} {x | x N, x ≤ 0} {x | x R, x ≤ 0}

IceJOKER [234]

Answer:

$\boxed{\boxed{\left\{x\ |\ x\ \epsilon\ Z,\ x \le 0}\right\}}}$

Step-by-step explanation:

Set builder notation-

It is a notation for representing a set by enumerating its elements and stating the properties that its members must satisfy.

The given set is,

$\left \{.... -3, -2, -1, 0 \right \}$

This set is comprised of all negative integers. So symbol Z should be used in this case.

The set builder notation for this set is,

$\left\{x\ |\ x\ \epsilon\ Z,\ x \le 0}\right\}$

7 0

4 years ago

Solve for t. −3t≥39

lorasvet [3.4K]

-3t ≥39

-3t/-3 ≥39/-3

t≤-13

is your answer hope this helps

Note: only flip the sign when you are dividing a negative number

4 0

3 years ago

Read 2 more answers

How would you best describe the two students outside the circles?

ruslelena [56]

Answer:

A. They are boys who are not in sixth grade and don't wear glasses.

Explanation:

5 0

3 years ago

In AABC, MLA = 53, m4C = 84, and side a = 8 inches. Find the length of side b to the nearest tenth of an inch.

Cerrena [4.2K]

Answer:

6.8 inches

Step-by-step explanation:

Given data :

m∠ A = 53° , m∠ C = 84° , side a = 8 inches

therefor m ∠ B = ( 180 - (84 + 53 )) = 43°

<u>Find the length of side b </u>

we will apply sine rule here

$\frac{a}{sinA} = \frac{b}{sinB} = \frac{c}{sinC}$

= $\frac{8}{sin53}$ = $\frac{b}{sin43}$

∴ b = ( sin43° * 8 ) / sin53°

= ( 0.6819 * 8 ) / 0.7986

= 5.4552 / 0.7986 = 6.83 ≈ 6.8 inches

8 0

3 years ago