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hodyreva [135]
3 years ago
13

Porfa es para un examen

Mathematics
1 answer:
lakkis [162]3 years ago
4 0

Answer:

Tu examen es para potos

Step-by-step explanation:

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Solve the equation using the Properties of Equality.<br><br> 64 = −3d + 7<br><br> d =
LuckyWell [14K]

Answer:

d = -19

Step-by-step explanation:

64 = -3d + 7

Subtracting 7 on both sides,

64-7 = -3d

57 = -3d

Divide both sides by -3,

d = -19

4 0
2 years ago
Please help.The question and the answer choices are in the picture.
Marianna [84]
Total mass = 6.7134  * 10^-1

= 0.67 grams
5 0
3 years ago
Solve this problem: -282-(1017)=
azamat
The negative before parenthesis gonna multiply to the number in the parenthesis so we will have : -282-1017 so we can add them together and we gonna have : 
-282-1017 = - 1299 :))) thats the answer 
i hope this be helpful 
3 0
3 years ago
Read 2 more answers
Assume the heights in a female population are normally distributed with mean 65.7 inches and standard deviation 3.2 inches. Then
siniylev [52]

Answer:

0.620

Step-by-step explanation:

We know that 1 feet = 12 inches, so, 5 feet is equivalent to 60 inches. Then, we are looking for the probability that a typical female from this population is between 60 inches and 67 inches. We know that

\mu = 65.7 inches and

\sigma = 3.2 inches

and the normal density function for this mean and standard deviation is

\frac{1}{\sqrt{2\pi } 3.2}exp[-\frac{(x-65.7)^{2}}{2(3.2)^{2}} ]

The probability we are looking for is given by

\int\limits^{67}_{60} {\frac{1}{\sqrt{2\pi } 3.2}exp[-\frac{(x-65.7)^{2}}{2(3.2)^{2}} ] } \, dx =0.620

You can use a computer to calculate this integral. You can use the following instruction in the R statistical programming language

pnorm(67, 65.7, 3.2)-pnorm(60, 65.7, 3.2)

7 0
3 years ago
Factor the perfect square trinomial 25x^2-60x+36
zaharov [31]

Since it is a perfect square trinomial, it is of the form:

a^2x^2-2abx+b^2 which simplifies to (ax-b)^2

Therefore:

sqrt(a)=sqrt(25)=5

sqrt(b)=sqrt(36)=6

Plug in a and b:

(ax-b)^2

(5x-6)^2

Test to make sure it did fit the formula:

-2abx=-60   (where x is 1)

-2(5)(6)=-60

-2(30)=-60

-60=-60

Answer:

(5x-6)^2

4 0
3 years ago
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