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sleet_krkn [62]
3 years ago
11

4x + 3z for x=7 and z=2​

Mathematics
2 answers:
Katen [24]3 years ago
5 0

Answer:

34

Step-by-step explanation:

plug 7 into 4x

plug 2 into 3z

do the math so...

4 X 7 =28

2 X 3 = 6

add 28 + 6 = 34

lora16 [44]3 years ago
4 0
The answer is 36!!! Hope it helps
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M% of n is what percent of p?<br> FIND FOR PERCENT
makvit [3.9K]

Answer:

m*p/n = percent

Step-by-step explanation:

m% of n is what percent of p?

We can use ratios

m             percent

------- =  ---------------

n                    p

Using cross products

m*p = n * percent

Divide each side by n

m*p/n = percent

5 0
3 years ago
Help please who ever correct brainliest
Otrada [13]

Answer:

Step-by-step explanation:

  5

3  _

    18

7 0
3 years ago
PLEASEEEE
belka [17]

Answer:

The answer to your questions is: 25 new teachers

Step-by-step explanation:

Data

# of students = 2000

ratio = 3:80 teachers to students

New teachers = ?

Process

I suggest to use rule of three to solve this problem

                     3 teachers ----------------  80 students

                      x                ----------------  2000 students

                  x = (2000 x 3) / 80 = 75 teachers

               Number of initial teachers = 75

The ratio change to 1:20

                     1 teacher -------------------  20 students

                     x             -------------------   2000 students

                     x = (2000 x 1) / 20

                    x = 100 teachers

Number of new teachers = 100 - 75 = 25

3 0
3 years ago
Please Help me!!!
drek231 [11]

Step-by-step explanation:

The displacement of a particle d (in km) as a function of time t (in hours) is given by :

d=2t^3+5t^2-3

Displacement at t = 4 hours,

d(4)=2(4)^3+5(4)^2-3=205\ km

Velocity of particle is given by :

v=\dfrac{dd}{dt}\\\\v=\dfrac{d(2t^3+5t^2-3)}{dt}\\\\v=6t^2+10t

Velocity at t = 4 hours,

v=6(4)^2+10(4)=136\ km/h

Acceleration of the particle is given by :

a=\dfrac{dv}{dt}\\\\a=\dfrac{d(6t^2+10t)}{dt}\\\\a=12t+10

At t = 4 hours,

a=12(4)+10=58\ km/h^2

Therefore, the displacement, velocity and acceleration at t = 4 hours is 205 km, 136 km/h and 58 km/h² respectively.

7 0
3 years ago
52 plus what equals 180
Pavlova-9 [17]

Answer:

128

Step-by-step explanation:

180-52= 128

7 0
3 years ago
Read 2 more answers
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