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3 years ago

20 is what percent of 52? Round your answer to the nearest tenth.

Mathematics

1 answer:

NARA [144]3 years ago

7 0

The answer is 10.4 because you multiply 0.2 by 52

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The safety inspector notes that Ray also needs to plan for a vertical ladder through the center of the coaster's parabolic shape

Pie

Answer:

vertex: (-5/8, 7/16)
axis of symmetry: x = -5/8

Step-by-step explanation:

For quadratic ax²+bx+c, the axis of symmetry is located at x=-b/(2a).

Here, we have a=4, b=5, so the axis of symmetry is ...

... x = -5/(2·4) = -5/8

_____

The vertex y-value will be f(-5/8).

... f(-5/8) = (4·(-5/8) +5)·(-5/8) +2 = (5/2)·(-5/8) +2 = -25/16 +32/16

... f(-5/8) = 7/16

_____

The axis of symmetry is x = -5/8; the vertex is (-5/8, 7/16).

3 0

3 years ago

PLLKEEASE HELPPPPPPP ASAPP

erica [24]

Answer:

x = 19

Step-by-step explanation:

(5x + 4)° + (x - 2)° + (3x + 7)° = 180°

(5x + x + 3x)° + (4 - 2 + 7)° = 180°

9x° + 9° = 180° → ÷9

x + 1 = 20

x = 20 - 1

x = 19

7 0

3 years ago

You are testing the claim that the proportion of men who own cats is significantly different than the proportion of women who ow

Nadya [2.5K]

Answer:

Test statistic =1.30

Step-by-step explanation:

Given that you are testing the claim that the proportion of men who own cats is significantly different than the proportion of women who own cats.

Men Women Difference

Sample size n 60 120

Proportion p_1, p_2 0.45 0.35 0.10

60 120 180

0.45 0.35 0.383333333

27 42 69

p = 0.3833

Std error for proportion difference = $\bar p (1-\bar p)(\frac{1}{n_1}+\frac{1}{n_2})\\=0.3833(0.6167)(\frac{1}{60}+\frac{1}{120})\\=0.0769$

Test statistic = $\frac{p_1-p_2}{\bar p (1-\bar p)(\frac{1}{n_1}+\frac{1}{n_2}) }$

= $1.3008$

=1.30

4 0

3 years ago

In the diagram below de and ef are tangent to o what is the measure of E

Andreyy89

Answer: 32

Step-by-step expanation:

7 0

3 years ago

Read 2 more answers

I need some help with these, I would appreciate it.

Anni [7]

The first one I think is B

6 0

3 years ago