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3 years ago

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li writes the expression “half of the sum of 9 and a number.” Write an algebraic expression that is equivalent to Ali’s expressi

on. Write a second algebraic expression that is different from, but equivalent to, your first expression. Respond in the space provided.

1 answer:

Kazeer [188]3 years ago

8 0

Answer:

Step-by-step explanation:

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Hi can someone please help me?

marshall27 [118]

Both can be right because if the function goes up, turns and goes down, between x = -2 and x = 2, it can happen that f(-2) = f(2) and then the average rate of change is [f(2) - f(-2)] / [2-(-2)] which is 0/4 = 0.

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3 years ago

Without drawing the graphs, find the points of intersection of the lines: a 7x+4y=23 and 8x–10y=19

emmainna [20.7K]

Answer:

(3,0.5)

Step-by-step explanation:

The given system has equations:

$7x + 4y = 23 \\ 8x - 10y = 19$

Let us multiply the second equation by 4 and the first equation by 10.

$70x + 40y = 230 \\ 32x - 40y = 76$

We add both new equations to get:

$102x = 306 \\ x = \frac{306}{102} = 3$

Put x=3 into the first equation and solve for y.

$7(3) + 4y = 23 \\ 21 + 4y = 23 \\ 4y = 23 - 21 \\ 4y = 2 \\ y = \frac{1}{2}$

The point of intersection is the solution to the system of equation which is (3,0.5)

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3 years ago

What is the value of e^infinity and e^-infinity

valentinak56 [21]

E^(∞): This is defined as 'e' being raised to a huge value. Hence the result will definitely be a large number which is also infinity (∞), i.e. e^(∞) = ∞. e^(- ∞) = 1/e^(∞) = 1/∞ = 0.

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3 years ago

The mean of six test scores is 83.what is the sum of the six test scores?

Fittoniya [83]

Mean = total score : frequency
mean x frequency = total score

so
83 = total score : 6
83 × 6 = total score
498 = total score

so the sum of the 6 test scores is 498

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3 years ago

Am gonna give branliest!!!

blagie [28]

The answer is B. -12°f

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3 years ago

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