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tekilochka [14]

3 years ago

7

Marcos drove twice as far as Candice. Together, they drove 66 miles. Which equation can be used to find the number of miles Cand

ice drove?

1 answer:

galben [10]3 years ago

4 0

Candice drove 22 miles. 66 divided by 3 is 22. Which means Marcos drove 44 miles.

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BRAINLIEST ANSWER FOR FIRST Please help with the problem below

Sidana [21]

Answer:

$m\:$ ]

Step-by-step explanation:

The given inequality is ;

$\frac{2m+3}{2}-\frac{17}{4}\:$

Multiply through by 8 to clear the fraction;

$4(2m+3)-2(17)\:$

Expand;

$8m+12-34\:$

Group similar terms;

$8m-m\:$

$7m\:$

$m\:$

7 0

3 years ago

Read 2 more answers

HELP ASAP DUE TODAY PLZ HELP<br> Solve the equation for x.<br> 17=5+23x

LenKa [72]

Answer:

x=12/23

Step-by-step explanation:

Isolate the variable by dividing each side by factors that don't contain the variable.

5 0

3 years ago

Simplify (23)^–2 genuinely confused

statuscvo [17]

Answer:

1/529

Step-by-step explanation:

$23^{-2}\\\\\mathrm{Apply\:exponent\:rule}:\quad \:a^{-b}=\frac{1}{a^b}\\23^{-2}=\frac{1}{23^2}\\\\23^2=529\\\\=\frac{1}{529}$

7 0

3 years ago

In a class of 40 students, everyone has either a pierced nose or a pierced ear. The professor asks everyone with a pierced nose

viktelen [127]

Answer:

3 students

Step-by-step explanation:

If everyone in the class has either a pierced nose or ear, we just simply have to add up the total number of hands raised and minus the number of students in the class.

35+8=43

43-40=3

3 students have both a pierced nose and pierced ear.

6 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

3 years ago