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2 years ago

What would be the answer to .99x=.89x-10

Mathematics

2 answers:

brilliants [131]2 years ago

4 0

Subtract .89x from both sides to isolate the variable
.10x = -10 divide by .10
X = 100

Stels [109]2 years ago

3 0

.99x=.89x-10 subtract .89x from both sides to isolate the variable

.10x=-10 divide by .10

x=100 final answer

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Find the slope of a line that passes through the points (3, -1) and (-2, -5)

aleksklad [387]

Yo sup??

slope of a line=m

m=y2-y1/x2-x1

=-2-3/-5-(-1)

=1/4

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3 years ago

Given: PRST is a square

xxTIMURxx [149]

Answer:

$(1-\sqrt{2})a^2$

Step-by-step explanation:

Consider irght triangle PRS. By the Pythagorean theorem,

$PS^2=PR^2+RS^2\\ \\PS^2=a^2+a^2\\ \\PS^2=2a^2\\ \\PS=\sqrt{2}a$

Thus,

$MS=PS-PM=\sqrt{2}a-a=(\sqrt{2}-1)a$

Consider isosceles triangle MSC. In this triangle

$MS=MC=(\sqrt{2}-1)a.$

The area of this triangle is

$A_{MSC}=\dfrac{1}{2}MS\cdot MC=\dfrac{1}{2}\cdot (\sqrt{2}-1)a\cdot (\sqrt{2}-1)a=\dfrac{(\sqrt{2}-1)^2a^2}{2}=\dfrac{(3-2\sqrt{2})a^2}{2}$

Consider right triangle PTS. The area of this triangle is

$A_{PTS}=\dfrac{1}{2}PT\cdot TS=\dfrac{1}{2}a\cdot a=\dfrac{a^2}{2}$

The area of the quadrilateral PMCT is the difference in area of triangles PTS and MSC:

$A_{PMCT}=\dfrac{(3-2\sqrt{2})a^2}{2}-\dfrac{a^2}{2}=\dfrac{(2-2\sqrt{2})a^2}{2}=(1-\sqrt{2})a^2$

5 0

2 years ago

Solve by using substitution<br> x=3y−2<br><br> 2x-5y=-22x−5y=−2

lys-0071 [83]

jehbwiwjwnenejsinwjwja

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3 years ago

HELP MEEEE!<br> 7th gradeeee

Brilliant_brown [7]

Answer:

0=0

Step-by-step explanation:

Add zero

0+2=2

2=2

Subtract 2 from both sides of the equation

2=2

2−2=2−2

Simplify

Combine like terms

2−2=2−2

0=2-2s

0=2s-2

0=0

Answer 0=0

8 0

2 years ago

A washer and a dryer cost $1029 combined. The washer costs $79 more than the dryer. What is the cost of the dryer?

Darina [25.2K]

X = dryer
(X+79) = washer
X + (X+79) = $1029
Therefore, x+x+79= 1029 or 2x+79=1029
Solve for x

2x = 1029-79
2x = 950

2x/2 = 950/2

X= $475 The price of the dryer is $475

4 0

2 years ago

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