All categories

2 years ago

May someone help me with this question

Mathematics

1 answer:

Dafna11 [192]2 years ago

3 0

X + 13 = -4
x = -4 - 13
x = - 17
I am thinking it is the first one..solution is -17

You might be interested in

In each of the following ,make y the subject and hence find the value of y when a=2, b=3 ,and c=4.

zvonat [6]

Part i

$\dfrac{2a-7}{6y} = \dfrac{3b-5}{2c}$

$y = \dfrac{ 2c(2a-7)}{6(3b-5)} = \dfrac{c(2a-7)}{9b-15}$

Substituting,

$y = \dfrac{4(2(2)-7)}{9(3)-15} = \dfrac{ -12}{12} = -1$

Answer: -1

Part ii

I'm not sure that one's typed in correctly but I'll solve it as written.

$3-34y + 2a = \dfrac{3b-5}{2c + 1}$

$34y = 3+2a-\dfrac{3b-5}{2c + 1}$

$y = \frac 1 {34}\left(3+2a-\dfrac{3b-5}{2c + 1} \right)$

We're not asked to simplify it so I wont. Substituting,

$y = \frac 1 {34}\left(3+2(2)-\dfrac{3(3)-5}{2(4) + 1} \right) = \frac 1 {34}(7-4/9) = \dfrac{59}{306}$

Answer: 59/306

3 0

3 years ago

F(x) = 3x^2+7<br> Find f(f(x)

Scrat [10]

Hhhhhjjuhyhyhgtgtgrgrgrfrfrfrf

3 0

2 years ago

Is (x+4)^2 equivalent to 2x^2+8x+8? Explain or show your reasoning.

Zolol [24]

Answer:

It's wrong because the y intercepts are different

Step-by-step explanation:

The box method is OP for these kind of questions

If I don't do a good job explaining it then I reccomend you consult the internet

8 0

2 years ago

Last week, a candle store received $355.60 for selling 20 candles. Small candles sell for $10.98 & large candles sell for $2

muminat

The answer is B. They sold 8

7 0

1 year ago

Show work and solve for √ ( 5 x − 9 ) − 1 = x.

Mandarinka [93]

sqrt (5x - 9) - 1 = x

sqrt(5x - 9) = x + 1

Square both sides:_

5x - 9 = x^2 + 2x + 1

x^2 - 3x + 10 = 0

(x - 5)(x + 2) = 0

x = 5 or -2.

Lets look for for any extraneous solutions:-

x = 5 ; sqrt (5*5-9) - 1 = sqrt16 - 1 = 3 and x = 3 (right hand side of equation)

so x = 5 is a solution

x = -2: sqrt(5*-2 - 9) - 1 = sqrt (-19) - 1 and x = -2 so this is extraneous

Answer:- One solution x = 5

4 0

3 years ago

Read 2 more answers