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2 years ago

A board is 3.5 m long. Four pieces, each.4 m long, are cut off. How much is left?

Mathematics

1 answer:

lys-0071 [83]2 years ago

8 0

Answer:

1.9 m

Step-by-step explanation:

3.5 - (4*0.4)

3.5 - 1.6 = 1.9

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Victor drew trapezoid PQRS on a coordinate plane p(7,4) q(10,4) r(13,-1) s(8,-1) what is length in units of side ps

olga nikolaevna [1]

Answer:

PS= $\sqrt{26}units$

Step-by-step explanation:

Given : PQRS is a trapezoid on a coordinate plane P(7,4) Q(10,4) R(13,-1) S(8,-1).

To find:: Length of the side PS

Solution : Using the distance formula, we can find the length of the side PS, therefore

PS= $\sqrt{(y_{2}-y_{1})^2+(x_{2}-x_{1})^2}$

PS= $\sqrt{(-1-4)^{2}+(8-7)^2 }$

PS= $\sqrt{(-5)^2+(1)^2}$

PS= $\sqrt{25+1}$

PS= $\sqrt{26}units$

which is the required length of the side PS.

5 0

3 years ago

13 - (n • 6) = 50<br> Pls help what would be the equation

olya-2409 [2.1K]

Answer:

n=-17/3

Step-by-step explanation:

16-(n.6)=50

16-6n=50

-6n=34

n=34/-6

n=-17/3

5 0

2 years ago

NEED HELP PLEASE!

USPshnik [31]

Answer:

$(x + (3+5i))^2 = x^2 + 6x + (10x+30)i - 16$

Step-by-step explanation:

Complex numbers identity:

The complex numbers identity is:

$i^2 = -1$

Square of the sum:

$(x + y)^2 = x^2 + 2xy + y^2$

In this question:

$(x + (3+5i))^2$

$x^2 + 2x(3+5i) + (3+5i)^2$

$x^2 + 6x + 10xi + 9 + 30i + 25i^2$

$x^2 + 6x + 9 + (10x+30)i - 25$

$x^2 + 6x + (10x+30)i - 16$

$(x + (3+5i))^2 = x^2 + 6x + (10x+30)i - 16$

5 0

3 years ago

What is the product of (x + 5)(x + 5)?

77julia77 [94]

Answer:

x^2 + 25

Step-by-step explanation:

3 0

3 years ago

The town librarian bought a combination of new-release movies on DVD for $20 and classic movies on DVD for $8. Let x represent t

IRISSAK [1]

answer: could be both (B)and(C)

Step-by-step explanation:

4 0

3 years ago

A board is 3.5 m long. Four pieces, each.4 m long, are cut off. How much is left?​

A board is 3.5 m long. Four pieces, each.4 m long, are cut off. How much is left?