All categories

3 years ago

Please tell me the answer to #22

Mathematics

1 answer:

serg [7]3 years ago

4 0

$22) \quad \dfrac{x-5}{3}= 2 \\ \\ \\ x-5= 2*3 \\ \\ x= 6+5 \\ \\ \boxed{x= 11}$

You might be interested in

Need help , don’t understand !!

mixer [17]

Quadratic Formula is (-b ±√(b²-4ac))/2a

With that being said:

y=2x²-5x-1 is in the correct form of ax²+bx+c

Now just plug in:

5±√(25-4(2 x-1))

5± √25+8

(5±√33)/2(2)

Answer is D

100% Sure

Brainliest?

5 0

3 years ago

If P(x)=x^2-1 and q(x)=5(x-1), which expression is equivalent to (p-q)(x)

soldier1979 [14.2K]

All you need to do $p(x)-q(x)$ . So:

$(x^{2}-1)-(5)(x-1)$

That's it!

3 0

3 years ago

Read 2 more answers

The bottom of a cylindrical container has an area of 10 cm². The container is filled to a height whose mean is 5 cm, and whose s

disa [49]

Answer:

μv = $50 cm^{3}$

σv= $3 cm^{3}$

Step-by-step explanation:

Volume is found by multiplying the area and height. Since we're given both area and height of 10 and 5 cm respectively then

μv =A.h= 10*5= 50 cm^{3}

The standard deviation of the volume will be

σv= 0.3*10= $3 cm^{3}$

5 0

3 years ago

Please help!! I’m stuck on this

beks73 [17]

Answer:

B. $x = -4\,\lor \,x = -1$

Step-by-step explanation:

Let $\sqrt{-4-5\cdot x} = x$ , we solve for $x$ by algebraic means.

1) $\sqrt{-4-5\cdot x} = x$ Given

2) $-4-5\cdot x = x^{2}$ Definition of power/Symmetry of equality

3) $x^{2}+5\cdot x + 4 = 0$ Compatibility with addition/Commutative and associative properties/Existence of additive inverse/Modulative property

4) $(x+4)\cdot (x+1) = 0$ $x^{2}+(a+b)\cdot x +a\cdot b = (x + a)\cdot (x+b)$

5) $x = -4\,\lor \,x = -1$ Result

Hence, the correct answer is B.

7 0

3 years ago

The Yu family and the Sainz family went on vacation together and each family leased a car. The leasing company charged a flat re

Dafna11 [192]

Answer:

y = 0.15x+77 is the equation linear connecting total cost y and miles driven x

Step-by-step explanation:

Given that the leasing company charged a flat rental fee for the week, plus a charge for each mile driven.

Let flat rental fee be c and cost per mile driven = m and miles driven = x

Total cost =y

Then y = mx+C is the linear equation.

to find m and c, we use the fact that y =110.30 when x = 222

i.e. 110.30 = c+222x

and similarly 99.05 = c+147x

Subtract to eliminate c

11.25 = 75 x

0.15 =x

Substitute in I equation

110.30 = c+222(0.15)

c = 77

Hence y = 0.15x+77 is the equation linear connecting total cost y and miles driven x

7 0

3 years ago