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3 years ago

5

At an assembly 7 out of the first 10 students who entered the gym were carrying a backpack. Based on this information, if 700 st

udents were already at the assembly, how many students can be expected to be carrying a backpack?

1 answer:

olganol [36]3 years ago

4 0

Answer:

I think 100, I could be wrong

Step-by-step explanation:

If it is a school then all of them should be carrying a backpack

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What is the binomial expansion of (m+2)^4

Alenkasestr [34]

(m+2)⁴ = ((m+2)²)²

= (m² + 4+ 2m)²

= m⁴ + 8 + 4m² + 8m² + 16m + 4m³ .........( (a+b+c)² = a²+b²+c²+2ab+2bc+2ac)

= m⁴ + 8 + 12m² + 16m + 4m³

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4 years ago

If BD = 4, AD = x-6, and CD = x, what is the length of CD?

emmainna [20.7K]

Answer:

The length of CD is 8 units

Step-by-step explanation:

<u><em>The complete question in the attached figure</em></u>

we know that

According to the Right Triangle Altitude Theorem,

$(BD)^2 = (AD)(CD)$

substitute the given values

$(4)^2 = (x-6)(x)$

$16=x^2-6x\\x^2-6x-16=0$

solve the quadratic equation by graphing

The solution is x=8 or x=-6

see the attached figure N 2

Discard the negative length.

therefore

The length of CD is 8 units

8 0

3 years ago

If 4 coins are tossed simultaneously what is the probability of getting exactly 3 heads

Alexus [3.1K]

No of outcomes =16
favourable outcome=4
<span>probability of getting exactly 3 heads=0.25</span>

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3 years ago

Keesha Thompsons cousin is 8 years older than keesha. Write an expression for the age of keesha's cousin

Oliga [24]

Answer:

y = 8 + x or

Keesha.cousin.age = 8 + Keesha.age

Step-by-step explanation:

II. When Keesha.cousin is older than Keesha 8 years

Give y = 8 + x, when y is Keesha cousin.age, x is Keesha.age

y = 8 + x

II. Prove by given Keesha is 10 years old.

y = 8 + 10

y = 18 or Keesha cousin is 18 years old.

Hope that help :)

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3 years ago

Factor 8y^2+17+2. Please

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It is A (8y + 1)(y + 2) because if you multiply it out you get 8y^2 + 16y + 1y + 2 which is equal to 8y^2 + 17y + 2

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3 years ago

Read 2 more answers