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Mnenie [13.5K]
2 years ago
9

Is (0,0) a solution to this system? y ≥ x^2 + x - 4, y> x^2 + 2x + 1

Mathematics
2 answers:
DochEvi [55]2 years ago
5 0

Answer:

(0,0) is not a solution of the given system.

Step-by-step explanation:

we have to find is (0,0) a solution to the system below

y\geq x^2 + x - 4\\\\y> x^2 + 2x + 1

Substitute (0,0) in above

If point (0,0) satisfy the above system then it becomes a solution.

0≥0^2+0-4=-4   True

0>0^2+2(0)+1=1   False

⇒ (0,0) is not a solution of the given system.

Ipatiy [6.2K]2 years ago
3 0
Y≥x²+x-4
y>x²+2x+1

Substitute (0,0):

0≥-4 true
0>1 false

(0,0) is not a solution of the system.
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Pls help I’ll brainlest and add extra points
Phoenix [80]

Answer:

26. D) $252

27. A) -6.7 + 6.8

Step-by-step explanation:

26. 400 * 0.3 = 120

400 - 120 = 280

280 * 0.1 = 28 (because the 10% is additional, cannot add it to the original 30%)

280 - 28 = 252

27. -4.5 + 4.4 = -0.1

- 6.7 + 6.8 = 0.1

-0.1 + 0.1 = 0

6 0
2 years ago
Which defines a circle
SIZIF [17.4K]
Circle<span> is the locus of points equidistant from a given point, the center of the </span>circle<span>. The common distance from the center of the </span>circle<span> to its points is called radius. Thus a </span>circle<span> is completely </span>defined<span> by its center (O) and radius (R): C(O, R) = O(R) = {x: dist(O, x) = R}.
Easier explanation: </span><span>A </span>circle<span> is a plane figure contained by one line such that all the straight lines falling upon it from one point among those lying within the figure are equal to one another.</span>
4 0
3 years ago
Which expression is 5 times as large as the expression 345+23
natima [27]

Answer:

1840

Step-by-step explanation:

345+23=368*5

3 0
2 years ago
Read 2 more answers
Using your knowledge of exponential and logarithmic functions and properties, what is the intensity of a fire alarm that has a s
Ierofanga [76]

Option B:

I=1.0\times\ 10^{0} \ \text {watts}/ \text m^2}

Solution:

Given sound level = 120 decibel

To find the intensity of a fire alarm:

$\beta=10\log\left(\frac{I}{I_0} \right)

where I_0=1\times10^{-12}\ \text {watts}/ \text m^2}

Step 1: First divide the decibel level by 10.

120 ÷ 10 = 12

Step 2: Use that value in the exponent of the ratio with base 10.

10^{12}

Step 3: Use that power of twelve to find the intensity in Watts per square meter.

$10^{12}=\left(\frac{I}{I_0} \right)

$10^{12}=\left(\frac{I}{1\times10^{-12}\ \text {watts}/ \text m^2} \right)

Now, do the cross multiplication,

I=10^{12}\times1\times\ 10^{-12} \ \text {watts}/ \text m^2}

I=1\times\ 10^{12-12} \ \text {watts}/ \text m^2}

I=1\times\ 10^{0} \ \text {watts}/ \text m^2}

I=1.0\times\ 10^{0} \ \text {watts}/ \text m^2}

Option B is the correct answer.

Hence I=1.0\times\ 10^{0} \ \text {watts}/ \text m^2}.

5 0
3 years ago
In triangle JKL, the length of side JK is 12 feet, and the length of side KL is 15 feet. Which of the following could be the len
Andrei [34K]

Answer:

D

Step-by-step explanation:

every 2 sides of a triangle has to be bigger than the 3rd side

8 0
2 years ago
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