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3 years ago

Find the value of x and y

Mathematics

1 answer:

telo118 [61]3 years ago

6 0

Answer:

2x+10 // 2 • (x + 5)

Step-by-step explanation:

Final Result :

y + 10

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The y -intercept of the line whose equation is 2 x + 5 y = 8 is

Anastaziya [24]

Answer:

8/5

Step-by-step explanation:

4 0

3 years ago

Y=x+1 y=x^2-1 please help i don't understand

ololo11 [35]

ANSWER

The solution is

$(x=1,y=2),(x=2,y=3)$

EXPLANATION

We have

$y=x+1---(1)$

and

$y=x^2-1---(2)$

Let us substitute equation (1) in to equation (2). This gives us,

$x+1=x^2-1(2)$

We rewrite this as a quadratic equation as the highest degree is 2.

$x^2-x-1-1=0$

This implies that

$x^2-x-2=0$

we factor to obtain,

$x^2+x-2x-2=0$

$x(x-1)-2(x-1)=0$

$(x-1)(x-2)=0$

This means,

$(x-1)=0\:\: or\:\:(x-2)=0$

$x=1\:\: or\:\:x=2$

We substitute this values into any of the above equations, preferably equation (1)

When, $x=1$ , $y=1+1=2$

When, $x=2$ , $y=2+1=3$

The solution is

$(1,2),(2,3)$

8 0

4 years ago

6. A fish tank measures 19.5 inches long by 12 inches wide by 15 inches tall. The tank is filled with water to a point 2 inches

forsale [732]

9514 1404 393

Answer:

3042 in³

Step-by-step explanation:

The dimensions of the water are ...

19.5 in long × 12 in wide × 13 in tall

The volume in cubic inches is ...

V = LWH

V = (19.5 in)(12 in)(13 in) = 3042 in³

_____

At 231 cubic inches per gallon, that's about 13.17 gallons.

4 0

3 years ago

(8.9× 10^4)(4× 10^8) (SCIENTIFIC NOTATION)

Annette [7]

This is equal to:

(8.9*4)(10^4*10^8)

pertinent rule: (a^b)(a^c)=a^(b+c)

(8.9*4)(10^12)

35.6X10^12

3.56X10^13 (and if we kept only significant figures....)

3.6X10^13

5 0

3 years ago

Read 2 more answers

Pentagon PQRST is drawn on a coordinate plane below. what rule best represents a dilation to create pentagon PQRST with a scale

otez555 [7]

Answer: $(x,y) \to (\dfrac12 x, \dfrac12 y)$

Step-by-step explanation:

Dilation is a transformation, in which the size of the image gets changed but not shape.

The rule of dilation with scale factor k and wither origin as center of dilation :

(x,y) → (kx, ky)

Here , $k= \dfrac12$ , center of dilation = Origin

Then, the rule best represents a dilation to create pentagon PQRST will be :

$(x,y) \to (\dfrac12 x, \dfrac12 y)$

5 0

3 years ago