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3 years ago

Best explained/correct answer gets brainliest.

Mathematics

1 answer:

Nuetrik [128]3 years ago

5 0

3, 15, 75, 375, and here's why:
Basically, it's asking you to take 3, and multiply it by five each time to get a pattern.

1: 3
2: 3*5 = 15
3: 15*5 = 75
4: 75*5 = 375

Add these together:
3 + 15 + 75 + 375 = 468

Your answer is "A)", 468.

You might be interested in

Sa se gaseasca numerele a si b a caror medie aritmetica este 200 si care sunt invers proportionale cu 8 si respectiv 4,5.

Olenka [21]

Bonjour, (as you write in roumain)

Soient a et b les 2 nombres

(a+b)/2=200==>a+b=400

8/a=4.5/b==>16b=9a

a+9a/16=400
==> 25a/16=400
==>a=400*16/25
==>a=256
et b= 9*256/16; b=144

3 0

2 years ago

The ratio of boys to girls in the

9966 [12]

Answer:

Answer : 52 girls

Step-by-step explanation:

Your ratio of boys to girls is 3:4

Set up a fractional proportion and cross multiply

3/4 = 39/x

cross multiply

3x = 4(39)

3x = 156

x = 156/3

x = 52 girls

Hope this was helpful!❤

5 0

3 years ago

What is the volume of the composite figure?

sertanlavr [38]

Look at the picture.

We have 3 cuboids. The formula of a volume of a cuboid is:

V = Length × Width × Height = lwh

The cuboid 1 are congruent to the cuboid 2.

l = 9 in, w = 10 in, h = 10 in

V = (9)(10)(10) = 900 in³

l = 6 in, w = 10 in, h = 10 in

V = (6)(10)(10) = 600 in³

The volume of the composite prism:

V = 2(900) + 600 = 1800 + 600 = 2400 in³

8 0

2 years ago

The diameter of a human red blood cell is 0.000009 m. The diameter of a cold virus is 0.00000003 m Approximately how many times

krek1111 [17]

Answer:

D. 3*10^2

Step-by-step explanation:

Given the diameter of human red blood cell = 0.000009 m

diameter of a cold virus = 0.00000003 m

To know how many times as large is the diameter of a red blood cell as the diameter of a cold virus, we will take the ratio of the diameter of human red blood cell to that of a cold virus as shown;

diameter of human red blood cell/diameter of a cold virus = 0.000009 m/0.00000003 m

= 9*10^-6/3*10^-8

= 9/3 * 10^-6-(-8)

= 3 * 10^(-6+8)

= 3*10^2

Hence the diameter of a red blood cell is 3*10^2 larger than that of the cold virus

8 0

2 years ago

2. Twenty-four fourth graders are going on a field trip to the Academy of Science. They need to form 3 groups of students for th

Tatiana [17]

Answer:

8persons/group

Step-by-step explanation:

Give parameters:

Number fourth graders = 24

Number of groups = 3 groups

Unknown:

Number of students in each group = ?

Solution:

Solving this problem involves finding the number of persons per group.

Number of persons per group = $\frac{number of fourth graders}{number of groups}$

Insert the parameters and solve;

Number of persons per group = $\frac{24}{3}$ = 8persons/group

7 0

2 years ago