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4 years ago

To make dough, Reba needs 2 cups of

Mathematics

2 answers:

arsen [322]4 years ago

5 0

Answer:

Step-by-step explanation:

$1 \:dough = 2\frac{1}{2} \:cups\:of\:flour\\5 \:batches=x$

Cross multiply

$x = 5\times 2\frac{1}{2} \\\\2\frac{1}{2}=\frac{2\times 2+1}{2}\\\\x=5\times \frac{5}{2}\\\\x=\frac{5\times \:5}{1\times \:2}\\\\x=\frac{25}{2}\\\\x=12\frac{1}{2}\:cups$

brilliants [131]4 years ago

3 0

Answer:

The answer would be D.

Step-by-step explanation:

D. 10 1/2

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Engineers want to design seats in commercial aircraft so that they are wide enough to fit 99% of all males. (Accommodating 100

Nezavi [6.7K]

Answer:

p99 = 16.4 inches

Step-by-step explanation:

Normal Probability Distribution:

Problems of normal distributions can be solved using the z-score formula.

In a set with mean $\mu$ and standard deviation $\sigma$ , the z-score of a measure X is given by:

$Z = \frac{X - \mu}{\sigma}$

The Z-score measures how many standard deviations the measure is from the mean. After finding the Z-score, we look at the z-score table and find the p-value associated with this z-score. This p-value is the probability that the value of the measure is smaller than X, that is, the percentile of X. Subtracting 1 by the p-value, we get the probability that the value of the measure is greater than X.

Men have hip breadths that are normally distributed with a mean of 14.3 in. And a standard deviation of 0.9 in.

This means that $\mu = 14.3, \sigma = 0.9$

Find p99.

This is the value of X when Z has a p-value of 0.99, so X when Z = 2.327. Then

$Z = \frac{X - \mu}{\sigma}$

$2.327 = \frac{X - 14.3}{0.9}$

$X - 14.3 = 0.9*2.327$

$X = 16.4$

p99 = 16.4 inches

8 0

4 years ago

Please help with my math 25 points

Sladkaya [172]

the vertex is at (4,3)

Choice D

5 0

3 years ago

If s(x) = 2x2 + 3x - 4, and t(x) = x + 4 then s(x) · t(x) =

Paladinen [302]

Answer:

$\large\boxed{s(x)\cdot t(x)=2x^3+11x^2+8x-16}$

Step-by-step explanation:

$s(x)=2x^2+3x-4,\ t(x)=x+4\\\\s(x)\cdot t(x)\\\\\text{use the distributive property:}\ a(b+c)=ab+ac\\\\s(x)\cdot t(x)=(2x^2+3x-4)(x+4)\\\\=(2x^2+3x-4)(x)+(2x^2+3x-4)(4)\\\\=(2x^2)(x)+(3x)(x)+(-4)(x)+(2x^2)(4)+(3x)(4)+(-4)(4)\\\\=2x^3+3x^2-4x+8x^2+12x-16\\\\\text{combine like terms}\\\\=2x^3+(3x^2+8x^2)+(-4x+12x)-16\\\\=2x^3+11x^2+8x-16$