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Mariulka [41]
3 years ago
11

Use the elimination method to solve the system of equations. Choose the

Mathematics
1 answer:
zvonat [6]3 years ago
7 0

Answer:

x = 5

y = 7

Step-by-step explanation:

See the image that I have added to you above to get the whole working.

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A large open meadow near your city is shrinking in size because developers have started building new homes there.
valentinak56 [21]

Answer:

    t=-10\log 0.32

Explanation:

<u>Equation:</u>

         A=1,562.5\times 10^{(-0.1t)}

This is a decaying exponential function, because the exponent is negative.

Then, the larger the value of t (number of months), the smaller A (the number of hectares).

The factor 1,562.5 is the initial number of hecares, when t = 0.

You must find the value of t when A equals 500, thus solve the equation:

     500=1,562.5\times 10^{(-0.1t)

Divide both sides by 1,562.5

     \dfrac{500}{1,562.5}=10^{(-0.1t)}

    0.32=10^{(-0.1t)}

Take base-10 logarithms on both sides:

    \log 0.32=-0.1t

    t=-\dfrac{\log 0.32}{0.1}\\\\\\t=-10\log 0.32

Note that the logarithm of a number decimal number is negative number, thus t will be positive. When you compute that, it is about 4.9 months.

8 0
3 years ago
* ANSWER PLS * What is the value of x?
uysha [10]

Answer: 21°

Step-by-step explanation:

Since angles DAE and CBE are inscribed on arc AC, they r equal

Hence angle CBE = 42°

So angle DAE = 42/2 = 21°

8 0
3 years ago
Find X<br> Please help I’m not exactly sure how to do it
Step2247 [10]

9x+1 = 2x+15

Subtract 1 from both sides.

9x=2x+14

Subtract 2x from both sides.

7x=+14

Divide 7 on both sides.

x=2

8 0
4 years ago
over the weekend and mom went out with her family they went to the morning Cafe while there they spent $44 her mom had a discoun
Jobisdone [24]

price after discount- $44-$11=$33

amount of tip- $4.95

bill after discount and tip- $37.95

amount of tax- $2.83

total bill- $40.78

5 0
4 years ago
A video store sells used DVDs for $9.65, tax included .About how many could you buy with the $130 you got for selling your textb
lukranit [14]

Answer:

13

Step-by-step explanation:

7 0
3 years ago
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