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3 years ago

Expand (–5a^2+2a+3)(4a^2–2a+1)

Mathematics

1 answer:

fiasKO [112]3 years ago

6 0

Answer:

Step-by-step explanation:

a • (a - 2) • (2a - 1)

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Jada walks to school. The function D givers her distance from school, in meters, t minutes since she left home. Which equation t

kolbaska11 [484]

Answer:

t(5)=600.................

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3 years ago

Depreciation is the decrease or loss in value of an item due to age, wear, or market conditions. We usually consider

kiruha [24]

Answer:

Part A) $V(t)=-5,750t+101,250$

Part B) $\$55,250$

Step-by-step explanation:

Part A) Express the value of the bulldozer, V, as a function of how many years old it is, t.

Let

V ----> the value of the bulldozer (dependent variable or output value)

t ----> the number of years (independent variable or input value)

we know that

The linear function in slope intercept form is equal to

$V(t)=mt+b$

we have the ordered pairs

(0,101,250) and (15,15,000)

Find the slope

The formula to calculate the slope between two points is equal to

$m=\frac{y2-y1}{x2-x1}$

substitute

$m=\frac{15,000-101,250}{15-0}$

$m=-\$5,750\ per\ year$ ----> is negative because is a decreasing function

The value of b is the initial value

$b=\$101,250$

substitute

$V(t)=-5,750t+101,250$

Part B) The value of the bulldozer after 8 years is

For t=8 years

substitute the value of t in the linear equation

$V(t)=-5,750(8)+101,250=\$55,250$

4 0

3 years ago

Please help and explain how you got the answer. Im giving out brainliest. || Q4

rosijanka [135]

Answer: 32

Step-by-step explanation:

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3 years ago

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What is the answer for this ?

REY [17]

Answer:

-2 < x ≤ 3 (All x values between -2 and 3; excluding -2 and including 3)

Step-by-step explanation:

I feel the answer is A because from what we know, domain is the x-intercept or x. So both C and D are not the answer because the y-intercept is not the domain, the y-intercept is the range. Next I looked at both A and B, well, if you look closely answer choice A says "excluding -2 and including 3" and choice B says "including -2 and excluding 3". I also seen on the graph that the point of (3,3) has a filled in dot and the point at (-2,-1) has an opened dot. A filled in dot always means you either have a ≥ (greater than or equal to sign) or a ≤ (less than or equal to sign). While an opened dot always means you just have < (greater than) or a > (less than) sign. So the correct answer is A!! Hope you have a fantastic rest of your day! :)))

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3 years ago

Is the square of 4 a rational number?

Natalka [10]

Answer:

Yes, 4 squared is a rational number.

Step-by-step explanation:

4 squared = 4 x 4 = 16

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3 years ago

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