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Scilla [17]
4 years ago
13

Use the quadratic formula to solve the equation x2+7x​

Mathematics
1 answer:
monitta4 years ago
4 0

The solution of the equation x2+7x​ is 0, -7 using the quadratic formula.

Step-by-step explanation:

x2 + 7x = 0

-b  ± √ b2 - 4(ac)/ 2a

substitution,

a = 1, b = 7, c = 0

= -7  ± √(7)2 - 4(1 x 0) / 2 x 1

= - 7   ± 7 / 2

x = 0 , -7

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A rectangular garden has dimensions of 100 feet by 10 feet. Next season, the garden is decreased to 2/5 of its size what is the
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Answer:

4 and 40

Step-by-step explanation:

2/5 of 10 is 4

2/5 of 100 is 40

3 0
3 years ago
A population of deer inside a park has a carrying capacity of 200 and a growth rate of 3%. If the initial population is 80 deer,
otez555 [7]

Answer:

The population of deer at any given time = 200(e^0.03t)  ÷ (1.5 + (e^0.03t))

Step-by-step explanation:

This is an example of logistic equation on population growth

carrying capacity, k = 200

Rate, r = 3% = 0.03

Initial Population, P1 =  80

P(t) =?

P(t) = (P1 (k)(e^rt)) ÷ (k- P1 + P1(e^rt))

P(t) = (80 (200)(e^0.03t)) ÷ (200 - 80 + 80(e^0.03t))

     = (16000(e^0.03t))  ÷ (120 + 80(e^0.03t))

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8 0
3 years ago
Here is the histogram of a data distribution.
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Answer:

Step-by-step explanation:

Some form of symetric i think....

4 0
3 years ago
Dave bought 4 cookies at a bake sale if each cookie cost 0.85 and he paid with a twenty dollar bill how much change should he ge
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Answer:

$16.60

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4 x 0.85 = $3.40

20 - 3.40 = 16.6

Dave should get back $16.60 in change.

5 0
3 years ago
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A stem and leaf plot titled High Temperatures in degrees Fahrenheit. The stems are 4, 5, 6, 7. The first column of leaves are 9,
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Answer:

The temperature with the highest frequency is 54

Step-by-step explanation:

Given

The above data

Required

The temperature with the highest frequency

The first step, is to plot the stem and leaf plot.

\begin{array}{cc}{4} & {9\ \ } & {5} & {2\ 4\ 4\ 6\ 8} & {6} & {0\ 1\ } & {7} & {2\ 3\ }  \ \end{array}

Next, is to identify the leaf with the highest frequency.

The leaf is 4 (with frequency 2)

Next, is to identify the accompanying stem of the leaf

The stem is 5

<em>Hence, the temperature with the highest frequency is 54</em>

5 0
3 years ago
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