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Fantom [35]
3 years ago
10

Solve the equation √x+9 - 9 = -4 show each step of your solution process

Mathematics
1 answer:
Serjik [45]3 years ago
3 0

Answer:

16

Step-by-step explanation:

Start by adding 9 to both sides, obtaining:  √(x + 9) = 5.

Square both sides, obtaining:   x + 9 = 25.

Subtract 9 from both sides:  x = 16

Note that √(16+9) - 9 = -4, as required.


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How much money do you have if you have 3 one-dollar bills, 2 half dollars, 5 quarters, 6 dimes, 2 nickels, and one penny.
Advocard [28]

Answer:

$5.91

Step-by-step explanation:

3+2*0.50+5*0.25+6*0.10+2*0.05+0.01=$5.91

7 0
4 years ago
Safara uses these steps to partition segment AB in a ratio of 9:4. why Safara's method works?
cluponka [151]

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Step-by-step explanation:

4 0
3 years ago
Emma has money into savings accounts. One rate is 8% and the other is 12%. If she has $450 more in the 12% account and the total
AveGali [126]

Let's say that the value invested in the account with a rate of 8% is "x", then the amount invested in the account with a rate of 12% is:

x+450

To calculate the total interest we need to calculate the interest of each individual account and sum them:

\begin{gathered} \frac{8}{100}\cdot x=0.08\cdot x \\ \frac{12}{100}\cdot(x+450)=0.12\cdot x+54 \end{gathered}

The total interest is the sum of the two expressions above:

\begin{gathered} 220=(0.08\cdot x)+(0.12\cdot x+54) \\ 220=0.08\cdot x+0.12\cdot x+54 \\ 220-54=0.2\cdot x \\ 166=0.2\cdot x \\ 0.2\cdot x=166 \\ x=\frac{166}{0.2} \\ x=830 \end{gathered}

The value invested in the account with 8% interest is 830, the one invested in the account with 12% interest is 1280.

7 0
1 year ago
What is the first step for multiplying decimal numbers?
dimulka [17.4K]
Read the question correctly
4 0
3 years ago
There is a ratio of 5 girls to 3 boys in the chorus. There are 24 boys in the chorus. How. many girls are in the chorus?
leva [86]

Answer:     40

Step-by-step explanation:

5/3    24/?

    divided by 8 =24 divided by 8 =3

                     5 x 8   =40  

Hope this helps :)

6 0
4 years ago
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