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Ksenya-84 [330]
3 years ago
15

HELP PLEASE QUICKLY!!!!!!!!!

Mathematics
1 answer:
Gennadij [26K]3 years ago
8 0
Side angle side or SAS
if you have any problems with my answer, write a comment and I will try to fix it.
Thanks!
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-27+ 20w=73? plsssssssssssssssssssssssssssss
Aloiza [94]

Answer:

w = 5

Step-by-step explanation:

-27 + 20w = 73

add 27 to both sides

-27 + 27 + 20w = 73 + 27

20w = 100

divide both sides by 20

20w/20 = 100/20

w = 5

6 0
3 years ago
Read 2 more answers
The coordinates of quadrilateral PQRS are P(–3, 0), Q(0, 4), R(4, 1), and S(1, –3). What best describes the quadrilateral?
denis-greek [22]

Answer:

Square

Step-by-step explanation:

Plot the vertices of the quadrilateral PQRS on the coordinate plane (see attached diagram). The diagram shows that this is a square. Let's prove it.

1. Find all sides lengths:

PQ=\sqrt{(-3-0)^2+(0-4)^2}=\sqrt{(-3)^2+(-4)^2}=\sqrt{9+16}=\sqrt{25}=5\\ \\QR=\sqrt{(0-4)^2+(4-1)^2}=\sqrt{(-4)^2+(3)^2}=\sqrt{16+9}=\sqrt{25}=5\\ \\RS=\sqrt{(4-1)^2+(1-(-3))^2}=\sqrt{(3)^2+(4)^2}=\sqrt{9+16}=\sqrt{25}=5\\ \\SP=\sqrt{(1-(-3))^2+(-3-0)^2}=\sqrt{(4)^2+(-3)^2}=\sqrt{16+9}=\sqrt{25}=5

All sides have the same lengths.

2. Find the slopes of all lines:

PQ:\ \dfrac{4-0}{0-(-3)}=\dfrac{4}{3}\\ \\QR:\ \dfrac{1-4}{4-0}=-\dfrac{3}{4}\\ \\RS:\ \dfrac{-3-1}{1-4}=\dfrac{4}{3}\\ \\SP:\ \dfrac{0-(-3)}{-3-1}=-\dfrac{3}{4}

Since the slopes of PQ and RS are the same, lines PQ and RS are parallel. Since the slopes of QR and SP are the same, lines QR and SP are parallel.

The slopes \frac{4}{3} and -\frac{3}{4} have the product of

-\dfrac{3}{4}\cdot \dfrac{4}{3}=-1,

then lines are pairwise perpendicular.

This means PQRS is a square.

4 0
3 years ago
Solve the equation n/10 + 5 =9. The solution is (Type the value of n.)​
natita [175]

Answer:

40

Step-by-step explanation:

n/10+5=9

n/10=9-5

n/10=4

n=4*10

n=40

3 0
3 years ago
NO LINKS HELP PLEASE PLEASE EXPLAIN ​
Iteru [2.4K]

Answer:  1,278

Step-by-step explanation: 2(18x18)+2 1/2(18x14)

p.e.m.d.a.s. 18x18= 324       18x14= 252

2x324= 648      2.5x252=630

648+630 =1,278

4 0
2 years ago
The _______ form of a quadratic equation is written y = a(x - h)2 + k.
uranmaximum [27]

its wrong

Step-by-step explanation:

5 0
3 years ago
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