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3 years ago

15

a 4-digit password is a number that begins with a 3 and does not contain a zero or nine. if digits can be repeated, how many pos

sible passwords are there?

1 answer:

stellarik [79]3 years ago

4 0

Hello,
it remainds 8 digits: 1,2,3,4,5,6,7,8

8*8*8=512 possibilities;

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Please can someone help me please

Tomtit [17]

You can use variables to solve this problem. Lets say that m is men, w is women, and c is children. m+w+c=266
four times as many men as children in ‘math words’ would be 4c=m
twice as many women as children would be 2c=w
what we can do now is plug those in to make everything easier with one variable
4c+2c+c=266
7c=266
c=38 now we have how many children, and we need to plug it back into what we have for women and men.
4c=m 4(38)=m m=152
2c=w 2(38)=w w=76

152 men, 76 women, and 38 children

7 0

3 years ago

Bonami High School has 82 juniors at its school. There are 29 students enrolled in Spanish class and 31 enrolled in history. The

Softa [21]

Answer:

73%

Step-by-step explanation:

6 0

2 years ago

Roughly estimate the volume of a tennis ball in cubic cm by using 6 cm for diameter and 3 for pi. round the answer to the neares

galben [10]

The volume of ball is 113.04 cubic centimeter

<em><u>Solution:</u></em>

Given that we have to find the volume of tennis ball

Since the ball is of sphere shape, we can use the sphere formula

<em><u>The volume of sphere is given by formula:</u></em>

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

Where, "V" is the volume and "r" is the radius

Given that,

Diameter = 6 cm

Therefore,

$Radius = \frac{diameter}{2}\\\\Radius = \frac{6}{2}=3$

<em><u>Substituting in formula, we get</u></em>

$V = \frac{4}{3} \times 3.14 \times 3^3\\\\V = 4 \times 3.14 \times 3^2\\\\V = 12.56 \times 9\\\\V = 113.04$

Thus volume of ball is 113.04 cubic centimeter

3 0

3 years ago

Point A is one vertex of triangle ABC. Point B is the x-intercept of 6x-4y=-12 and point C is the y-intercept. What are points

Oksana_A [137]

Answer: point b=(-2,0) point c=(0.3)

triangle graph= c at the top b on the left side bottom and a on the right side botton

Step-by-step explanation:

7 0

3 years ago

14) write the equation to the line parallel to y=3x-5 that goes through the point (-2,-7) using any form

xeze [42]

Answer:

The equation of this line would be y = 3x - 1

Step-by-step explanation:

In order to find this equation we must first find the slope of the original line. The original slope (the coefficient of x) is 3, which means the new slope will also be 3 because parallel lines have the same slope. Now, we can use this slope along with the point in point-slope form to find the equation of the line.

y - y1 = m(x - x1)

y + 7 = 3(x + 2)

y + 7 = 3x + 6

y = 3x - 1

3 0

3 years ago