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Blizzard [7]
3 years ago
12

Which expression is equivalent to 4(5 − 3) 9 − 3 8x 20 − 12 8 + 1

Mathematics
1 answer:
Ludmilka [50]3 years ago
4 0
The correct answer is 20- 12
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If f(x)=-7x-3 and g(x)=√x-16 what is (f °g)(-2)
schepotkina [342]

Answer:

Not possible

Step-by-step explanation:

The notation (f °g)(-2) means f(g(-2)). You will substitute -2 into g(x) then substitute the value or equation that results into f(x).

g(-2) = √x - 16 = √-2 - 16

This is not possible because the value of -2 cannot be found in a square root. Square roots do not compute real roots for negative numbers.

3 0
4 years ago
The Reunion Tower is one of the most recognizable landmarks in Dallas, Texas due to the giant sphere that sits atop the structur
ValentinkaMS [17]
The volume of a sphere uses the following formula:

V = \frac{4}{3}\pi r^{3}

Because the question asks to use 3.14 in place of pi, the formula will now look like this:

V = (\frac{4}{3})(3.14)r^{3} = 4.18\overline{66} r^{3}

We are given a diameter of 118 feet. The radius is half of the diameter, so divide the diameter by 2 to find the radius:

118 \div 2 = 59
r = 59

Plug this value into the formula, and solve with a calculator:

4.18\overline{66} \times 59^3 = 4.18\overline{66} \times 205379 = 859853.413

Although our result is one cubic foot off, the answer is <span>A. 859,852ft^3.

(859,852 is the result if the constant in the given formula is 4.18666, but the result with infinitely repeating numbers is 859,853.)</span>
6 0
3 years ago
If f(x) = 4x + b and f(2) = 13, then what is the y-intercept? Consider that b is a constant​
Ivanshal [37]

Answer:

Step-by-step explanation:

f(x) = 4x + b

f(2) = 4·2 + b  =  13

b = 13-8 = 5

y-intercept = 5

3 0
3 years ago
an archaelogist in turkey discovers a spear head that contains 63% of its original amount of c-14. find the age of the spear hea
Akimi4 [234]
I got 4,620 years............
4 0
3 years ago
What is the answer?? I need help
timurjin [86]

Answer:

∠EFD

Step-by-step explanation:

Δ ABC similar ΔDEF

Trick is to keep the letters in the same order. A for D, B for E, and C for F

∠BCA

Where is the B?

second.

What's the second letter in other triangle?

E.

C is the third. F is the third in the other.

A is first. D is first.

8 0
3 years ago
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