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yan [13]
3 years ago
11

Write an equation: After withdrawing $7 from a checking account, Carla’s balance was $89

Mathematics
1 answer:
nevsk [136]3 years ago
8 0

Answer:

The initial Carla's balance was $96

The equation is x-7=89

Step-by-step explanation:

Let

x ----> initial Carla's balance

we know that

The linear equation that represent this problem is equal to

x-7=89

solve for x

Adds 7 both sides

x=89+7

x=$96

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Which three steps are correct when solving this quadratic equation by completing the square? X^2-10x=39
sergey [27]

Step-by-step explanation:

Any answer that involes,

Step 1: Complete the Square

{x}^{2}  - 10x = 39

( \frac{  - 10}{2} ) {}^{2}  = 25

{x}^{2}  - 10x + 25 = 64

Step 2: Turn the left side into a binomial

(x - 5) {}^{2}  = 64

Step 3: Solve for x.

x - 5 = +  -  8

x - 5 = 8

x = 13

OR

x - 5 =  - 8

x =  - 3

X=-3 or X=13

4 0
3 years ago
A scientist uses the equation shown below to predict the future population of a species. In the equation, y represents the estim
ololo11 [35]
Answer:

1200

Explanation:

y represents the estimated population

t represents the number of years.

The equation that predicts the population after t years is given as:

y=150\times4^t

Substitute t = 3/2 into the equation

\begin{gathered} y=150\times4^{\frac{3}{2}} \\ y=150\times2^{2(\frac{3}{2})} \\ y=150\times2^3 \\ y=150\times8 \\ y=1200 \end{gathered}

The closest valuie to the value of y is 1200

3 0
2 years ago
The shallowest section of an underground tunnel is -50 feet. The deepest section of the tunnel is -135 feet. How many feet below
lys-0071 [83]

Answer:

The answer would be c)85 FEET

Step-by-step explanation:You start with the deepest section(-135) and add the shallowest point(50). the result is an 85 foot difference.


3 0
4 years ago
Read 2 more answers
) You travel 220 km on 20 litres of petrol. How many km per litre?​
spayn [35]

Answer:

220km per 20litre, so 220/20 to get 11km/litre

Step-by-step explanation:

6 0
4 years ago
Draw the image of ∆ABC under the dilation with scale factor 4 and center of dilation (-3, -4).
castortr0y [4]

Answer:

ABC

Step-by-step explanation:

7 0
3 years ago
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