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3 years ago

Is 5(x - 2) = 5x - 7 one solution

Mathematics

1 answer:

Neko [114]3 years ago

8 0

Answer:

no solution

Step-by-step explanation:

Hello,

$5(x-2)=5x-7\\ 5x-10=5x-7\\ -10=-7$

and this is always false so there is no solution

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1/2−3(1/2+1)^2<br><br><br> Enter your answer, as a simplified fraction

o-na [289]

Answer:

$- \frac{25}{4}$

Step-by-step explanation:

$\frac{1}{2} -3 (\frac{1}{2} + 1)$ ²

Calculate sum

$\frac{1}{2} -3x (\frac{3}{2})$ ²

To raise a fraction to a power raise numerator and denominator to that power

$\frac{1}{2}$ -3 x $\frac{9}{4}$

Calculate product

$\frac{1}{2}$ - $\frac{27}{4}$

Subtract fractions

- $\frac{25}{4}$

4 0

2 years ago

If the walls are 9' high, how much paint would I need to buy to paint the walls of all three bedrooms?

ludmilkaskok [199]

Answer:

The required paint for a total of $1.404\ ft^{2}$ is approximate 6 gallons

Step-by-step explanation:

we know that

To find how much paint would I need to buy to paint the walls of all three bedrooms, calculate the area of all three bedrooms

<em>Master Bedroom</em>

The area is equal to

$A1=(16+16+12+2+18)*9=576\ ft^{2}$

<em>2 Bedroom</em>

The area is equal to

$A2=(12+14+10+10)*9=414\ ft^{2}$

<em>3 Bedroom</em>

The area is equal to

$A3=(10+10+14+10+2)*9=414\ ft^{2}$

The total area is equal to

A=A1+A2+A3

$A=576+414+414=1.404\ ft^{2}$

Approximate one gallon of paint covers 250 square feet

$1.404/250=5.6\ gal$

7 0

3 years ago

Jonathan has 8 stamps.some are 3 cent stamps and some are 5 cent stamps.if the total value of the stamps is 36 cents. How many o

tatiyna

Let x= number of 3 cent stamps
let y=number of 5 cent stamps
x+y=8
3x+5y=36

3x+5y=36 3x-5y=36
-3(x+y=8) . -3y-3y=-24
2y=12
y=6

x+6=8
-6 . -6
x=2

There will be 2 3 cent stamps and 6 5 cent stamps

8 0

3 years ago

Please answer this in two minutes

ryzh [129]

Answer:

Step-by-step explanation:

To find Angle X we use sine

sin∅ = opposite/ hypotenuse

From the question

WY is the opposite

WX is the hypotenuse

So we have

sin X = WY/ WX

sin X = 6/7

X = sin-¹ 6/7

X = 58.99

X = 59° to the nearest tenth

Hope this helps you

8 0

3 years ago

Read 2 more answers

Simplify (4x + 2) x 3

Elza [17]

The answer should be 12x squared + 6x if not 12x+6

7 0

3 years ago