3 years ago

Type the correct answer in each box. Use numerals instead of words.

Mathematics

2 answers:

oksano4ka [1.4K]3 years ago

6 0

Answer:

Step-by-step explanation:

Luda [366]3 years ago

6 0

Answer:

3x^2-12x+8

Step-by-step explanation:

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What is the solution to the equation 4x - 6 = 22

alexandr402 [8]

x=7 because if you replace x with 7 then 4 times 7 is 28 and 28 minus 6 is 22

3 0

3 years ago

A toy manufacturer wants to know how many new toys children buy each year. A sample of 601 children was taken to study their pur

Lilit [14]

Answer:

The confidence interval is 6.6<μ<6.8.

Step-by-step explanation:

We have:

Number of observations = 601

Mean = 6.7

Standard deviation σ = 1.5

The z-score for a 95% confidence interval is 1.96.

The limits of the confidence interval can be calculated as

$X \pm z*\frac{\sigma}{\sqrt{n}}\\\\LL=X-z*\frac{\sigma}{\sqrt{n}}=6.7-1.96*\frac{1.5}{\sqrt{601} } =6.7-0.1199=6.6\\\\UL=X+z*\frac{\sigma}{\sqrt{n}}=6.7+1.96*\frac{1.5}{\sqrt{601} } =6.7+0.1199=6.8$

The confidence interval is 6.6<μ<6.8.

7 0

3 years ago

Which graph does NOT represent a function?

d1i1m1o1n [39]

Answer:

The circle graph does not represent a function because it doesn't pass the vertical line test.

Step-by-step explanation:

3 0

3 years ago

Solve.<br> 10x^2 - 6 = 9x

grin007 [14]

Answer:

Step-by-step explanation:

use quadratic formula: (-b ±√b²-4ac) ÷ 2a

a = 10, b = -9, c = -6

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2 years ago

PLEASE HELP!!!

Paladinen [302]

Answer:

d (w) = 0.1w² – w+ 5

Step-by-step explanation:

d(w) = c(w) - a(w)

= -0.3w²+2w+13 -(-0.4w²+3w+8)

= -0.3w²+0.4w²+2w-3w+13-8

= 0.1w²-w+5

4 0

3 years ago