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4 years ago

5

Drag each tile to the correct box. Match the expression to the exponent property that you use first to simplify the expression

1 answer:

amid [387]4 years ago

5 0

Do you have the tiles and stuff

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You might need: Calculator

Fudgin [204]

Answer:

Area = 153.8 cm/ m

Step-by-step explanation:

Area of circle = 22 ÷ 7 × r²

= 22 ÷ 7 × (7²)

= 22 ÷ 7 × 49

= 3.14 × 49

= 153.8 cm/ m

8 0

3 years ago

A study found that the average stopping distance of a school bus traveling 50 mph was 264 feet. a group of automotive engineers

lutik1710 [3]

Answer:

Step-by-step explanation:

Given that a study found that the average stopping distance of a school bus traveling 50 mph was 264 feet.

Sample taken showed the following results

$n=40\\\bar x =262.3 feet\\Std dev = \sigma= 3 ft$

Since population std deviation is known and sample size is large, z test can be used.

$H_0: \bar x=264\\H_a: \bar x$

(Left tailed test)

Mean difference = $264-262.3 = 1.7$

Std error = $\frac{\sigma}{\sqrt{n} } \\=\frac{3}{\sqrt{40} } \\=0.474$

Z = test statistic = mean diff/std error

= $\frac{1.7}{0.474} \\=3.584$

p value = 0.00017

Since p < alpha our 0.05 we reject null hypothesis

There is evidence to show that mean is less than 264 feet

(Assumptions:

Sample are randomly drawn

Sample represents the population

4 0

3 years ago

At one basketball game there were 1207 people. At the next game they were 958 people how many people were at two games?

LenKa [72]

2165 people were at the two basket ball games.

8 0

4 years ago

2+2=?<br><br><br><br><br> ........................................

BlackZzzverrR [31]

Answer:

4

Step-by-step explanation:

I have evidence look at the image

3 0

3 years ago

Verify a÷(b+c)not equal(a÷b)+a÷c for each of the following values of a, b and c

just olya [345]

Answer:

a) and b) satisfied the condition of the given equation.

Step-by-step explanation:

Given: $\frac{a}{(b + c)}$ ≠ $\frac{a}{b}$ + $\frac{a}{c}$

Then,

$\frac{a}{(b + c)}$ ≠ $\frac{(ac + ab)}{bc}$

a) For a = 21, b = 4 and c = -2, then we have;

$\frac{21}{(4 + (-2))}$ ≠ $\frac{(21*-2 + 21*4)}{4*-2}$

$\frac{21}{4 - 2}$ ≠ $\frac{(-42 + 84)}{-8}$

$\frac{21}{2}$ ≠ $\frac{42}{-8}$

$\frac{21}{2}$ ≠ $-\frac{21}{4}$

Therefore the condition of the given equation is satisfied.

b) For a = 1, b = 10 and c = 1, then we have:

$\frac{1}{(10 + 1)}$ ≠ $\frac{(1*1 + 1*10)}{10*1}$

$\frac{1}{11}$ ≠ $\frac{(1 + 10)}{10}$

$\frac{1}{11}$ ≠ $\frac{11}{10}$

Therefore the condition of the given equation is satisfied.

5 0

3 years ago