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3 years ago

Which expression shows a way to find 2,813 x 7?

Mathematics

1 answer:

sergey [27]3 years ago

8 0

Answer: C）14,000 + 5,600 + 70 + 21

Step-by-step explanation:

2813=2000+800+10+3

2000*7=14000

800*7=5600

10*7=70

3*7=21

i hope it help ο(=•ω＜=)ρ⌒☆

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The cost of 6 cups is £7.80 Work out the cost of 10 of these cups,

Nostrana [21]

Answer:

Step-by-step explanation:

For 6 cups is 7.80

For 10 cups is??

7.80×10=78

78/6=13

7 0

3 years ago

Is 3399 a rational number

Marrrta [24]

Yes it is yes yes yes yes it is

5 0

3 years ago

$700 at 8% for 6 years

Elena-2011 [213]

700•0.08•6=$336 is your answer

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3 years ago

(1 point) Consider the function f(x)=2x3−9x2−60x+1 on the interval [−4,9]. Find the average or mean slope of the function on thi

OlgaM077 [116]

Answer: c = 4.97 and c = -1.97

Step-by-step explanation: Mean Value Theorem states if a function f(x) is continuous on interval [a,b] and differentiable on (a,b), there is at least one value c in the interval (a<c<b) such that:

$f'(c) = \frac{f(b)-f(a)}{b-a}$

So, for the function f(x) = $2x^{3}-9x^{2}-60x+1$ on interval [-4,9]

$f'(x) = 6x^{2}-18x-60$

f(-4) = $2.(-4)^{3}-9.(-4)^{2}-60.(-4)+1$

f(-4) = 113

f(9) = $2.(9)^{3}-9.(9)^{2}-60.(9)+1$

f(9) = 100

Calculating average:

$6c^{2}-18c-60 = \frac{100-113}{9-(-4)}$

$6c^{2}-18c-60 = -1$

$6c^{2}-18c-59 = 0$

Resolving through Bhaskara:

c = $\frac{18+\sqrt{1740} }{12}$

c = $\frac{18+41.71 }{12}$ = 4.97

c = $\frac{18-41.71 }{12}$ = -1.97

Both values of c exist inside the interval [-4,9], so both values are mean slope: c = 4.97 and c = -1.97

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4 years ago

Can someone please help <3

Nimfa-mama [501]

Answer:

number (c)

Step-by-step explanation:

I am not sure about this

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3 years ago