Please help with this

Answer:

I dont know

Step-by-step explanation:

I need to know what questions you need done because all of them is a lot.

Answer:

5 minutes

Step-by-step explanation:

if one lap is 2/5 km then you  would need to run 2.5 laps to run a km and if it takes 2 minutes to run a lap then you multiply 2 minutes by the number of laps aka 2.5 so 2 times 2.5=5

Answer:

a = - 17

Step-by-step explanation:

5+2a = -29

2a = -29-5

2a = - 34

a = -34/2

a = -17

Answer:

200 seats

Step-by-step explanation:

Let s = numbers of seats

1/5s = children

3/4 s = adults

10 = empty

The total number of seats = children + adults + empty

s = 1/5s + 3/4s + 10

Subtract 1/5s and 3/4s from each side

s -1/5s -3/4s= 1/5s-1/5s + 3/4s-3/4s + 10

s - 1/5s - 3/4s = 10

Get a common denominator

20s/20 - 4s/20 -15s/20 = 10

Combine like terms

1s/20 = 10

Multiply each side by 20

s/20 *20 = 20*10

s = 200

Answer:

19 seats

Step-by-step explanation:

you take the denominators: 5,4, and 9

then you add them to get 19.

Answer:

68+72+85=225

plus 79 =304 divided by 4 = 76

plus 89 =314 divided by 4 = 78.5

plus 91=316 divided by 4 = 79

so the answer is C

plz brainlest

Answer:

91%

Step-by-step explanation:

(0.68 + 0.72 + 0.85 + x)/4 = 0.79

(2.25 + x)/4 = 0.79

0.5625 + 1/4x = 0.79

1/4x = 0.2275

x = 0.91 = 91%

This is a word problem for 12.

Laura decided to throw a party. The DJ charged 2 dollars an hour and 4 dollars to use lights and fog. How long did the DJ play?

This one is for 11.

Kate wanted to go skating. When she got there it was 4 dollars an hour. The total cost was 12 dollars. How many hours did she skate?

Answer:

-1

Step-by-step explanation:

4+(-2)-(-3)-6 = 4-2+-6

simplify 4- into 2

2+3-6

5-6

-1

Answer:

population: 8th grade

sample: 70

Population of middle school is 8th grade and sample is 70.

Here, 70 students from 8th grade are randomly chosen to answer the poll questions for find out what student want to eat at lunch.

What is population?

Population is known as a group of individuals, objects, events, organizations etc.

In middle school 70 students are chosen to answer the poll question.

So sample of middle school is 70 and population is 8th grade.

Learn more about the Population visit:

https://brainly.com/question/13799939

#SPJ1

Answer:

The answer to this question is B

Step-by-step explanation:

I hope it helps

Thanks bro, i appreciate it :]

Answer:

x = 1.2

Step-by-step explanation:

Essentially, because ABCDE and JKLMN are similar, their corresponding sides have a common ratio. To find x, we can simply the ratio between NJ and its corresponding side equal to the ratio of another pair of corresponding sides.

[tex]\frac{BA}{KJ}=\frac{AE}{JN}[/tex]

[tex]\frac{3}{1.8}=\frac{2}{x}[/tex]

3x = 3.6

x = 1.2

T-T this took waaaaaay too long to be helpful but I hope it is anyways!

Answer:

36

Step-by-step explanation:

Answer:

In total there are 36 girls.

Step by step explanation:

We apply the proportion.

for every 2 boys there are 3 girls, therefore the rule of three simple applies.

2 boys 3 girls

  Boys ??? girls

it is multiplied crossed where both ends have data, and the result is divided by the remaining number, being:

3 x 24 = 72

72/2 = 36

Answer:

1. 0 2. 8

Step-by-step explanation:

Answer:

1. 0

2. 8

Step-by-step explanation:

Answer:

a=3/4

Step-by-step explanation:

1. Get 2/3a by itself.

•Turn 1/3 to 2/6 by multiplying 1/3 by 2/2.

•Because you only add and subtract like denominators

This will make it look like:

2/3a - 1/6 = 2/6

Then, add 1/6 to both sides to get 2/3a by itself.

It'll look like this:

2/3a = 3/6

2. Get a by itself.

•Multiply the reciprocal (opposite) of 2/3 to get a alone.

This will look like:

(3/2) • 2/3a = (3/2) • 3/6

a = 18/24

3. Simplify.

Find the largest number that can simplify the equation.

For example, 18 ÷ 3 = 6, and 24 ÷ 3 = 8.

But the largest number you can divide both sides by is 6.

18 ÷ 6 = 3 and 24 ÷ 6 = 4.

3/4.

Step-by-step explanation:

not sure for the answer but take how many triangles there are if they are all same same size then use this equation x÷t=a x is 360° t is how many triangles in the octagon and a is ur answer

Answer:

Step-by-step explanation:

980

Answer:

ac and d are simluar to each other

Step-by-step explanation:

they all have a length that is a multiple of 4 and a width with a multipe of 5

Answer:

Figure A, B, and C are all similar.

Step-by-step explanation:

4/5 is the simplest length and width here. The other figures have the larger lengths that increase at the same rate.

Answer:

117

Step-by-step explanation:

13x9

Answer:

there is a 1/2 chance to get heads again

Step-by-step explanation:

im not entirely sure tho

Answer:

Median and mode because it is the digit in the middle aka the median and because it is the number that it is the most repeated aka the mode

Step-by-step explanation:

Answer:

a, b

the equation is the same

These expressions represents the cost of the overnight trip because an hotel room is  100 dollars, the food is 25n which means 25 dollars per person and the cost of going to the musuem is 35n which is 35 dollars per person.

page 2

n=2                 n=3                  n=4

220                280                  340

220                280                  340

320                480                  640

Step-by-step explanation:

Answer:

the answer is -49

Step-by-step explanation:

........................................

Answer:

is the answer 7/25 ? i got 7/25

Answer:

7/25 is the answer

Step-by-step explanation:

sin ○ = opp/ hyp

sin ○ = 7 /25

Answer:

[tex]{ \tt{2b {}^{3} + 5}} \\ = { \tt{2 {(3)}^{3} + 5 }} \\ = { \tt{59}}[/tex]

Answer:

59

Step-by-step explanation:

We know, b=3

So, 2b³+5

= 2×3³+5

=54+5

=59/ (Ans.)

Answer:

A 22

Step-by-step explanation:

mark me brainlest

Answer:

ok dscaad

Step-by-step explanation:

ok rgeddx