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3 years ago

Pls helppppp,,,,,.....

Mathematics

2 answers:

Simora [160]3 years ago

7 0

Answer:

18 = 2x-14

or, 2x =18+14

or, 2x =32

or, x=32/2

x=16

2(6x-7)=10

or, 12x-14=10

or, 12x=10+14

or, x=24/12

x=2

ryzh [129]3 years ago

3 0

Answer:

yall do school right now???and i forgot how to do these sorry

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. Carol earns $16.00 for 1/2 of an hour. Peter earns $15.00 for 1/3 of an hour. How much do Carol and Peter earn for 3 hours of

ale4655 [162]

Answer:

231.00

Step-by-step explanation:

Carol earns 16 for 30 minutes, so $32 an hour, 32 * 3 = 96.

Peter earns 15 every 20 minutes, so 20 * 3 = 60 minutes, and 15 * 3 = 45,

so he earns 45 dollars an hour. 45 * 3 = 135

135+96 = 231.00

U shall not fail .w.

3 0

3 years ago

Please view picture. Also please tell mehow you got the answer

Cerrena [4.2K]

Have a look at the image attachment. I've added the points A, B, C, D such that
A = base of the diving board pole, or location of the pool deck
B = the location 1.6 meters directly above point A
C = location of the person's eyes
D = diving board location
The goal is to find the length of segment AD

We are given
AB = 1.6
BC = 3.67
what we want to find is
BD = x

Due to the fact we have similar right triangles ABC and CBD, we can form the proportion below and solve for x
AB/BC = BC/BD
1.6/3.67 = 3.67/x
1.6*x = 3.67*3.67
1.6*x = 13.4689
1.6*x/1.6 = 13.4689/1.6
x = 8.4180625

So BD is 8.4180625 meters
Use this to find the length of AD
AD = AB + BD
AD = 1.6 + 8.4180625
AD = 10.0180625
which rounds to 10.0 meters when rounding to the nearest tenth (one decimal place)

------------------------------------------------------------------------------------------

Answer: choice D) 10.0 m

7 0

4 years ago

What is the largest number ??

stellarik [79]

Answer:

Step-by-step explanation:

x = 1st number

x+2 is the next consecutive odd number

x+ x+2 = 164

Combine like terms

2x+2 = 164

Subtract 2 from each side

2x= 162

Divide by 2

2x/2 =162/2

x = 81

x+2 = 83

The largest number is 83

8 0

3 years ago

If a-b = 7 and ab = 8. Find the value of a^3 - b^3 (a cube - b cube)

Leto [7]

Answer:

511

Step-by-step explanation:

a-b = 7 ____eq 1

ab = 8 ____eq 2

a = 7 + b ___eq 3

a = 8/b ___eq 4

using simultaneous equations :

7 + b = 8/b

7b + b^2=8

b^2 + 7b - 8 =0

factorize it

b^2 + 8b - b - 8 = 0

b(b+8) -1(b+8)=0

b = 1 , -8

then a = 8/1 = 8

a =8/-8 = -1

a = 8, -1

so,

a^3 - b^3

= (8)^3-(1)^3

= 511

7 0

3 years ago

The maker of an automobile advertises that it takes 12 seconds to accelerate from 20 kilometers per hour to 65 kilometers per ho

sp2606 [1]

Answer:

The acceleration is 1.0416 m/ $s^{2}$

Step-by-step explanation:

In order to solve this problem we first need to know the formula for acceleration which is the following.

$acceleration = \frac{final.velocity - initial.velocity}{final.time - initial.time}$

Since the time acceleration is calculated as $m/s^{2}$ we need to convert the km/h into m/s. Since 1km = 1000m and 1 hour = 3600 seconds, then