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2 years ago

HELP ASAP 2 and 3!! please :)

Mathematics

1 answer:

damaskus [11]2 years ago

5 0

Answer:

2. D. division property of equality

3. B. transitive

Step-by-step explanation:

2. well, we divide both sides by the same factor 3.

3. the same reason as for 4. we are using that if A = B, and B = 30, then A =30 in both lines.

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An engineer is going to redesign an ejection seat for an airplane. the seat was designed for pilots weighing between 130lb and 1

Vlad [161]

Answer: 0.4758

Step-by-step explanation:

Given : Mean : $\mu=137\text{ lb}$

Standard deviation : $\sigma =28.9\text{ lb}$

Also, the new population of pilots has normally distributed .

The formula to calculate the z-score :-

$z=\dfrac{x-\mu}{\sigma}$

For x=130 lb .

$z=\dfrac{130-137}{28.9}=-0.2422145\approx-0.24$

For x=171lb.

$z=\dfrac{171-137}{28.9}=1.1764705\approx1.18$

The p-value = $P(-0.24$

$=0.8809999-0.4051651=0.4758348\approx0.4758348\approx0.4758$

Hence, the required probability : 0.4758

6 0

2 years ago

Answer these questions please please

Natalka [10]

Answer:

Step-by-step

i) a² - 2ab + b² = (a + b)²

a² = p² ; a = p

b² = 16 = 4² ; b = 4

2ab = 2*p*4 = 8p

p² - 8p + 16 = (p - 4)²

ii) a² + 2ab + b² = (a +b)²

a² = 121x² = (11x)² ; b² = 4y² = (2y)²

2ab = 2 * 11x * 2y = 44xy

121x² + 44xy + 4y² = (11x + 2y)²

4 0

2 years ago

Write the equation for the circle with center (1, 1) and radius 5.

zepelin [54]

The answer is C
(x-h)^2 + (y -k)^2 =r^2
Center (h,k) r = radius

4 0

3 years ago

What is the greatest common factor of 65 and 91

Sedbober [7]

So,

First, we find the prime factored form (P.F.F.) of 65 and 91.

P.F.F. of 65: 5 * 13

P.F.F. of 91: 7 * 13

Find the common numbers
13

13 = G.C.F.

Note: This method works for finding any G.C.F. (find common primes)

4 0

3 years ago

Read 2 more answers

PLEASE HELP ITS GEOMETRY ILL GIVE BRAINLIEST

Rom4ik [11]

Pretty certain it would be the first answer - X = 6 square root of 2
Y = 6

3 0

2 years ago