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N76 [4]
3 years ago
12

Evaluate the function f (x)  4 • 7x for x  1 and x = 2. Show your work

Mathematics
1 answer:
SashulF [63]3 years ago
5 0
The function and the first value stated for x are confusing.

Doing some research, I found that the problem is to evaluate the function   f(x)=4.7^x    for x = - 1 and x  2.

The solution is:

1) For x = - 1

f(-1)=4. 7^{-1} =4. (1/7)=4/7

2) For x = 2

f(2)=4.7^2=4(49)=196
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Sue has 18 sweets.
NARA [144]

Step-by-step explanation:

Find out the expressions for the number of sweets sue and tony have now .

To proof

As given

Sue has 18 sweets. tony has 18 sweets.sue gives tony x sweets

thus

sue sweets = 18 - x

Tony sweets = 18 + x

As given

Sue then eats 5 sweets. Tony then eats half of his sweets

sue sweets becomes = 18 -5 -x

= 13 - x

Tony sweets become= 18 + x /2

= 9+ x/2

hence proved.

Hence proved

5 0
3 years ago
Which is equivalent to 16 Superscript three-fourths x?
brilliants [131]

Answer:

h

Step-by-step explanation:

3 0
3 years ago
Approximately 26% of people have Rh negative blood. We will check the blood tests of the next 12 people to enter an emergency cl
Pachacha [2.7K]

Answer:

Step-by-step explanation:

Let X be the number of persons out of 12 who have RH negative blood.

X is binomial since each person is independent of the other to have Rh negative blood.

n =12

a) What is the probability that exactly 5 of those patients will have Rh negative blood?

P(X=5) =12C5 (0.26)^5 (1-0.26)^7\\= 0.1143

b) What is the probability that at least 3 of them will have Rh negative blood?

P(X\geq 3) = \Sigma_3^{12} 12Cr (0.26)^r (1-0.26)^{12-r}=0.6397

c) What are the expected number and standard deviation of the number of these patients with Rh negative blood?

E(X) = np = 12(0.26) = 3.12

Var(x) = npq = 3.12 *0.74

Std dev = \sqrt{Varx} \\=1.5195

4 0
4 years ago
Savannah is making a quilt with squares that have side lengths of 15/16 foot each. Are the side lengths of the squares closer to
alekssr [168]

Answer:

1 foot long

Step-by-step explanation:

If this fraction is closer to one it will be close to 16/16. And since 8 is half of 16, any fraction that is around 8/16 is closer to 1/2. 15 is closer 16 so this fraction is closer to one.

8 0
3 years ago
Read 2 more answers
-3 3/5÷2 7/10 what is the simplest form ​
rjkz [21]

Answer:

answer the problem then see how many times the top number goes into bottom then, find the lcd of the numerator and denominator

7 0
3 years ago
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