All categories

3 years ago

PLEASE HELP FOR BRAINLIEST! ;)

Mathematics

1 answer:

netineya [11]3 years ago

4 0

Answer:

The answer for 7 is 525

the answer for 8 is a) yes its a random sample and b) the question is not biased because the question is a wide topic with many possible answers.

Step-by-step explanation:

for 7 cross multiply 3000 over x and 200 over 35 and divide the fraction.

for 7, it's a random sample because a) you didn't ask all the boys and b) it's a wide topic with many answers.

You might be interested in

Make a Factor Tree with these numbers 1,000 256 288 192 999

4vir4ik [10]

Answer:

1000256288192999 is too big.

Step-by-step explanation:

Ex.: 6, 9, 26, 256, etc.

This calculator accepts big numbers up to 100,000 or more.

Results:

1000256288192999 is too big.

Factor tree for 1000256288192999

3 0

3 years ago

Need help due at midnight!!

likoan [24]

Your answer is 5.

On the first triangle ABC, the answers are all divided by 7, to the triangle DEF. So 35/7 is 5. Hope this helps.

3 0

3 years ago

4x + 3 = -5x -7 cual es el Valor de x ?

yan [13]

4x + 3 = -5x - 7 Add 5x to both sides.
4x + 3 + 5x = -5x - 7 + 5x
9x + 3 = -7 Subtract 3 from both sides.
9x + 3 - 3 = -7 - 3
9x = -10 Divide both sides by 9
9x / 9 = -10 / 9
Your answer can either be 1.11111... or it would be x = -10/9

7 0

4 years ago

What is the period for the function y = -4 cos (5x +3)? (4.3)

BlackZzzverrR [31]

The periodicity of function is $\frac{2 \pi}{5}$

Solution:

Given that we have to find the period of function

Given function is:

$y = -4 + cos(5x+3)$

Use the below formula:

$\mathrm{Periodicity\:of\:}a\cdot \cos \left(bx\:+\:c\right)\:+\:d=\frac{\mathrm{periodicity\:of}\:\cos \left(x\right)}{|b|}$

Thus,

$Peridocity\ of\ cos(5x + 3) - 4 = \frac{\text{periodicity of cos(x)}}{5}$

Now find the periodicity of cos(x)

We know that,

periodicity of cos(x) = $2 \pi$

Therefore,

$Peridocity\ of\ cos(5x + 3) - 4 = \frac{2 \pi}{5}$

Thus the periodicity of function is $\frac{2 \pi}{5}$

4 0

3 years ago

Last one Please show your work

statuscvo [17]

Mean = (Sum of values)/(Number of values)

$Mean\\ \\ =\frac { 55+62+61+54+68+72+59+61+70 }{ 9 } \\ \\ =\frac { 562 }{ 9 } \\ \\ =62.4\quad mph\quad (1\quad d.p)\\ \\$

Range = Highest Value - Lowest Value

$Range\\ \\ =72-54\\ \\ =18\\ \\$

8 0

3 years ago