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4 years ago

98 POINTS EASY

Mathematics

2 answers:

irina [24]4 years ago

3 0

Answer:

11x+4+5=180 ok first we have to put all the naked numbers on one side and the x's number on one side, and by doing that a easier way to do that is you switch the spots but their symbols - and + change so if its negative - its going to turn into a + positive and + to a -

11x = 180 - 5 - 4

11x = 171 and since theres mutliplication 11 times x which is 11x, were going to divide

x = 171/11 and the out come is with decimals (15.54545...etc)

x=11 is incorrect

~batmans wife dun dun dun....

OLEGan [10]4 years ago

3 0

Answer: x = 15.55

Step-by-step explanation:

Add the like terms together first.

11x + 9 = 180

Subtract 9

11x = 171

x = $\frac{171}{11}$ ≈ 15.55

I don't know if there was a typo in your original problem or not.

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Riko wants to find the distance between the points (−2, −3) and (2, −5). His work is shown. Riko correct? Explain why or why not

nadya68 [22]

Answer:

I'm guessing you want to know the distance I think so the distance is √20

Step-by-step explanation:

Distance formula

√(x2-x1)^2+(y2-y1)^2

√(2-(-2)^2+(-5-(-3)^2

√16+4= 20

√20

finding the square root gives you a long decimal which is 4.472135954999 and so on

4 0

4 years ago

Read 2 more answers

Researchers are studying two populations of sea turtles. In population D, 30 percent of the turtles have a shell length greater

jeka57 [31]

Answer:

a. 0.1917

b. 0.0914

d. 0.1580

Step-by-step explanation:

(a)

$P^D = \frac{15}{40} = 0.375$

$P^E = \frac{11}{60} =0.8133$

Mean, $\sigma_{P^D-P^E} = P^D-P^E$ = 0.375 -0.1833 = 0.1917

(b) sample prop ? Show your work and label each value.

Mean, = = 0.1917

Standard deviation = $\sqrt{\frac{P^D(1-P^D)}{N_D} +\frac{P^E(1-P^E)}{N_E} }$

Standard deviation = $\sqrt{\frac{0.375(1-0.375)}{40} +\frac{0.1833(1 - 0.1833)}{60} }$

Standard deviation = 0.0914

(c)

Normality condition:

np ≥ 10 and n(1-p) ≥ 10

Both the samples satisfy the normality condition.

(d)

The probability is obtained by calculating the z score,

$z = \frac{(P^D-P^E)-(P^d-P^e)}{\sigma_{P^D - P^E}}$

$z = \frac{0.1917-0.1}{0.0914}$ = 1.0029

P(z > 1.0029) = 1 - P(z ≤ 1.0029)

The probability is obtained from the z distribution table,

P(Z > 1.0029) = 1 - 0.8420 = 0.1580

3 0

3 years ago

Please help pls pls help pls belp

Delvig [45]

Answer:

After 1 second, the ball will reach a maximum height of 16 feet

Step-by-step explanation:

The height of the ball after t seconds: h(t) = -16t^2 + 32t

The graph of this quadratic function is parabola which opens downwards. The vertex of a quadratic equation is the maximum or minimum point on the equation's parabola

t = -b/2a = -(32)/2(-16) = -32/-32 = 1 second

then

h(t) = -16(1)^2 + 32(1) = -16 + 32 = 16

After 1 second, the ball will reach a maximum height of 16 feet

8 0

2 years ago

Explain the term least significant bit (LSB).

vivado [14]

Answer:

the bit in a binary number which is the lowest numerical value

6 0

3 years ago