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chubhunter [2.5K]
3 years ago
9

Is < on a number line a closed or open circle?​

Mathematics
1 answer:
Nimfa-mama [501]3 years ago
6 0

Answer:

it is open

Step-by-step explanation:

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7.8+ (x-18)=31 <br>Please Help Asap<br>ty​
lidiya [134]

Answer:

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Step-by-step explanation:

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Olin [163]

Answer:

The graph has only one x-intercept

Step-by-step explanation:

we have

f(x)=-4x^2+12x-9

we know that

The discriminant of a quadratic equation of the form

ax^{2} +bx+c=0

is equal to

D=b^{2}-4ac

in this problem we have

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substitute

D=12^{2}-4(-4)(-9)

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D=0

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3 years ago
(-13xy+2y)+(2x-5xy-15y)
Arturiano [62]

Answer:-18xy+2x-13y

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2 years ago
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87g of sugar is needed to make 10 cakes. How much sugar is needed for 7 cakes?
nataly862011 [7]
87g divided by 10 = 8.7
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What can you conclude from her work? Check all that apply.
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first, third and last one

Step-by-step explanation:

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