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solmaris [256]
2 years ago
14

What is the solution of 15=-4+z/3

Mathematics
2 answers:
Bess [88]2 years ago
6 0
Z = 57
Hope this helps!
lana [24]2 years ago
4 0
15=-4+z/3

+4 +15 = +4 -4 +z/3
cancels the 4 on the right side

19 = z/3

3 x 19 = z/3 x 3
cancels 3 on the right side

I think the answer is z = 57
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Which of the following illustrates the truth value of the given statements?
Amiraneli [1.4K]

hey i think TT- T but im not sure tell if im right

3 0
3 years ago
Read 2 more answers
At the Foremost State Bank the average savings account balance in 2012 was $1900. A random sample of 45 savings account balanes
lakkis [162]

Answer:

The calculated  |t| = |-26.517|=26.517 > 2.326 at 0.01 level of significance

Null hypothesis is rejected at 0.01 level of significance

There is difference between mean savings account balance in 2013 is different from the mean savings account balance in 2012

Step-by-step explanation:

<u><em>Step(i)</em></u>:-

Mean of the Population = 1900

Given random sample size 'n' =  45

Mean of the sample x⁻ = 1000

Standard deviation of the sample = 225

<u><em>Null Hypothesis</em></u>:-

There is no difference between mean savings account balance in 2013 is different from the mean savings account balance in 2012.

<u><em>Alternative Hypothesis</em></u> :-

There is difference between mean savings account balance in 2013 is different from the mean savings account balance in 2012

<u><em>Step(ii</em></u>):-

Test statistic

        t = \frac{x^{-}-mean }{\frac{S.D}{\sqrt{n} } }

        t = \frac{1000-1900 }{\frac{225}{\sqrt{45} } }

       t = -900 /33.54 = -26.517

      |t| = |-26.517|=26.517

Degrees of freedom

                       γ = n-1 = 45-1 =44

t₍₀.₀₁ , ₄₄₎ = 2.326

The calculated  |t| = |-26.517|=26.517 > 2.326 at 0.01 level of significance

Null hypothesis is rejected at 0.01 level of significance

There is difference between mean savings account balance in 2013 is different from the mean savings account balance in 2012

4 0
2 years ago
The instructions for building a kite tell you to begin by cutting a strip of wood to 45 cm in length, but your ruler only measur
Phantasy [73]
If one inch = 2.54 centimeters, then 45 centimeters divided by 2.54 centimeters will give you the amount of inches the piece of wood needs to be.

45/2.54 = 17.72  ---- Rounded to the nearest quarter, would be 17.75 inches.
6 0
3 years ago
Read 2 more answers
C
mario62 [17]

Answer:

since the sum of interior angles of hexagon is 720 °

you add the known angles

ie 115 +90+145+160

you get 510

subtract it from 720

you get 210

divide 210 by 3

you get 70

angle cde is 140

6 0
2 years ago
Read 2 more answers
AYUDAAAA PLIS ES PARA HOYYY<br><br> Determina un procedimiento para sumar nueve numeros consecutivos
muminat

Answer:

9x + 36, donde x es el primer número

Step-by-step explanation:

Sea "x" un número cualquiera, el consecutivo o sucesor, corresponde al número que va después, se representa como: (x + 1)

Primer número: x

Segundo número: x + 1

Tercer número: x + 2

Cuarto número: x + 3

Quinto número: x + 4

6th número: x + 5

Séptimo número: x + 6

Octavo número: x + 7

Noveno número: x + 8

La suma de 9 números consecutivos, es:

x + (x + 1) + (x + 2) + (x + 3) + (x + 4) + (x + 5) + (x + 6) + (x + 7) + (x + 8)

9x + 36

Espero que esto ayude!!!

6 0
2 years ago
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