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what is 1028-3(8*5)

Answers

Answer 1

Answer: Let's break it down quick

since (8*5) is in parenthesis, you have to do it first which would equal 40. 10*2=20*8 is 160. Since there is a negative in between that and 3*40 you must solve 3*40 first, which equals 120. Now,

160-120= 40

The answer to the question is 40.

Answer 2

Answer: Hey and thanks for giving me the chance to serve u

10*2=20*8 is 160. then this

160-120= 40
So we get 40(:

Hope l helped

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Alder cut 3 pieces of fabric from a roll. Each piece of fabric she cut is 11/2 yd. long. she has 2 yards of fabric left on the roll. How much fabric was on the roll before she cut it

Answers

1 piece = 11/2 yards long
3 pieces = 11/2 x 3 = 33/2 yard long

She still has 2 yards left,
so the roll has 33/2 + 2 = 37/2 = 18 1/2 yards.

Answer: 18 1/2 yards

Answer:

Step-by-step explanation:

3 One-fourth yd pieces of fabric from a StartFraction 6 Over 8 EndFraction yd piece of fabric.

60 % of 80 ASAP pls bruuh

Answers

Answer:

Step-by-step explanation:

just ask siri

I need help with this! thanks

Answers

Answer:

it should be about 6. try measuring the the 3 line with paper or something then put it on the other line

Step-by-step explanation:

A parabola has a minimum value of 0, a y-intercept of 4, and an axis of symmetry at x = -2.Select the graph that matches the description.

Answers

Answer:

Graph represented by option D is the correct choice.

Step-by-step explanation:

We have been given that a parabola has a minimum value of 0, a y-intercept of 4, and an axis of symmetry at $x=-2$ .

Since the minimum value of our given parabola is 0, so y-coordinate of vertex of parabola would be 0. This means that vertex of parabola will be at x-axis.

Since Since the minimum value of our given parabola is 0, so our parabola will be upward opening.

We are also told that parabola has an axis of symmetry at $x=-2$ . This means that parabola will be symmetric about line $x=-2$ .

The y-intercept of parabola is 4. This means that parabola will intersect y-axis at point $(0,4)$ .

Upon looking at our given choices, we can see that option D is the correct choice as it meets all the given conditions.

The answer is d. The y-intercept is at 4, the parabola is at 0 and the axis of symmetry is x=-2.

NBC News reported on May 2, 2013, that 1 in 20 children in the United States have a food allergy of some sort. Consider selecting a random sample of 15 children and let X be the number in the sample who have a food allergy. Then X ~ Bin(15, 0.05). (Round your probabilities to three decimal places.) (a) Determine both P(X ≤ 3) and P(X < 3). P(X ≤ 3) = P(X < 3) = (b) Determine P(X ≥ 4). P(X ≥ 4) = (c) Determine P(1 ≤ X ≤ 3). P(1 ≤ X ≤ 3) = (d) What are E(X) and σX? (Round your answers to two decimal places.) E(X) = σX = (e) In a sample of 90 children, what is the probability that none has a food allergy?

Answers

Answer:

a) P(X ≤ 3) = 0.9946

P(X < 3) = 0.9639

b) P(X ≥ 4) = 0.0054

c) P(1 ≤ X ≤ 3) = 0.5313

d) E(X) = 0.75

σX = 0.84

e) P(X=0) = 0.0099

Step-by-step explanation:

We have x: number in the sample who have a food allergy. As the sample is of n=15 and p=0.05, we have:

$X \sim Bin(15, 0.05)$

a) We have to determine P(X ≤ 3) and P(X < 3)

We can calculate P(X ≤ 3) as the sum of P(0), P(1), P(2) and P(3).

$P(x\leq 3)=\sum_(k=0)^3P(k)\n\n\nP(x=0) = \binom{15}{0} p^(0)q^(15)=1*1*0.4633=0.4633\n\nP(x=1) = \binom{15}{1} p^(1)q^(14)=15*0.05*0.4877=0.3658\n\nP(x=2) = \binom{15}{2} p^(2)q^(13)=105*0.0025*0.5133=0.1348\n\nP(x=3) = \binom{15}{3} p^(3)q^(12)=455*0.0001*0.5404=0.0307\n\n\nP(x\leq 3)=0.4633+0.3658+0.1348+0.0307=0.9946$