All categories

2 years ago

write an expression to represent multiplying twice the difference of 9 and 7 PLS HELP TYSM ASAP TOO PLS

Mathematics

1 answer:

MrMuchimi2 years ago

8 0

Answer:

2*3

Step-by-step explanation:

multiplying 2 the difference subtraction of 9-7 your answer is 2*3

You might be interested in

What is the answer for this ?

vodka [1.7K]

Answer:

1/9

Step-by-step explanation:

1/9 fills faster than

1/27

1/18

5 0

3 years ago

At a carnival, contestants are asked to keep rolling a pair of dice until they roll snake eyes. The number of rolls needed has a

Stells [14]

Answer:

The two numbers of rolls are 25.2 and 46.8.

Step-by-step explanation:

The Chebyshev's theorem states that, if X is a r.v. with mean µ and standard deviation σ, then for any positive number k, we have

$P (|X -\mu| < k\sigma) \geq (1-\frac{1}{k^{2}})$

Here

$(1-\frac{1}{k^{2}})=0.75\\\\\Rightarrow \frac{1}{k^{2}}=0.25\\\\\Rightarrow k=\sqrt{\frac{1}{0.25}}\\\\\Rightarrow k=2$

Then we know that,

$|X - \mu| \geq k\sigma,\\\\ \Rightarrow \mu - k\sigma \leq X \leq \mu + k\sigma$ .

Here it is given that mean (µ) = 36 and standard deviation (σ) = 5.4.

Compute the two values between which at least 75% of the contestants lie as follows:

$P(\mu - k\sigma \leq X \leq \mu + k\sigma)=0.75\\\\P(36 - 2\cdot\ 5.4 \leq X \leq 36 + 2\cdot\ 5.4)=0.75\\\\P(25.2\leq X\leq 46.8)=0.75$

Thus, the two numbers of rolls are 25.2 and 46.8.

8 0

2 years ago

Let f(x) = 1/ x-4 and g(x) = 1/x -2, evaluate the following.

musickatia [10]

Step-by-step explanation:

Key : Plug in the numbers given in the parenthesis into the x values of the corresponding functions.

f(1/2) = 1/ 1/2 - 4 = 1/-7/2 = -2/7

g(1/2) = 1/1/2 - 2 = -3/2

f(-1/4) = 1/-1/4-4 = 1/-17/4 = -4/17

g(-1/4) = 1/-1/4 - 2 = 1/-9/2 = -2/9

7 0

1 year ago

Can you help me solve this question

Serggg [28]

Answer:

t = 32

Step-by-step explanation:

The given equation is :

$24=\dfrac{3}{4}t$ ....(1)

Where

t is the number of guests attending the catered event.

The reciprocal of $\dfrac{3}{4}$ is $\dfrac{4}{3}$ .

Multiplying both sides by the reciprocal of $\dfrac{3}{4}$ .

$24\times \dfrac{4}{3}=\dfrac{3}{4}\times \dfrac{4}{3}t\\\\t=8\times 4\\\\t=32$

Hence, 32 guests will attend the catered.

3 0

2 years ago

3. Sybrina jogged 2 miles in 30 minutes. At

Kryger [21]

Answer:

6 miles

Step-by-step explanation:

30+30+30=90=3 times =2 miles

2x3=6 miles

6 0

2 years ago