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3 years ago

If 60% of people said that they like

Mathematics

2 answers:

PilotLPTM [1.2K]3 years ago

7 0

Answer:

40%

Step-by-step explanation:

I am Lyosha [343]3 years ago

3 0

Answer:

130

Step-by-step explanation:

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Sum of × +1 and × + 2

ikadub [295]

Step-by-step explanation:

X +1 + X + 2

X + X + 1 + 2

2x + 3

Therefore it's 2x + 3

3 0

2 years ago

Read 2 more answers

7. A number of minor automobile accidents occur at various high-risk intersections in Teton County despite traffic lights. The T

Anit [1.1K]

Answer:

Modification has not reduced the number of accidents.

Step-by-step explanation:

$H_0: \mu\geq0\\H_a:\mu$

A B C D E F G H

Before modification 5 7 6 4 8 9 8 10

After modification 3 7 7 0 4 6 8 2

Difference -2 0 1 -4 -4 -3 0 -8

Mean of differences $M_d = \frac{sum}{8}=\frac{2+0-1+4+4+3-0+8}{8}=2.5$

Standard deviation of differences = $\sqrt{\frac{\sum(x-\bar{x})^2}{n}}=2.9277$

Formula of paired t test :

$t=\frac{M_d}{\frac{s}{\sqrt{n}}}\\t=\frac{2.5}{\frac{2.9277}{\sqrt{8}}}\\t = 2.4152$

Df = n-1 = 8-1 =7

$t critical = t_{(df, \alpha)}=t_{7,0.01}=2.998$

t critical> t calculated

So, We failed to reject null hypothesis

Hence modification has not reduced the number of accidents.

6 0

2 years ago

Emma went to a salon to get her hair cut. The price of the haircut is $65. She wants to leave a 20% tip. What is the total amoun

Alina [70]

Answer:

$78

Step-by-step explanation:

$65 x 1.20 = $78

$65 x 0.20 = $13

$65 + $13 = $78

8 0

3 years ago

Multiply (2x-3) (3x+5)

murzikaleks [220]

Answer:

A, or $+10x$

Step-by-step explanation:

$(2x-3)(3x+5)\\6x^2+10x-9x-15\\6x^2+x-15$

Step two would've been

$2x*5$

Which equals

$+10x$

5 0

3 years ago

Read 2 more answers

PLEASE HELP ASAP WILL DO BRAINLIEST!!!!!!! Part A: Three equations that all represent the same function f are shown. Select the

Serga [27]

Answer:

A: f(x)=2x^2 +12x +10

B: f(0) = 10

Step-by-step explanation:

<u>Part A</u>:

f(0) is a constant in the equation if the form is such that for x=0, all terms are zero except one of them. Standard form is one such form. This is the equation in standard form:

f(x) = 2x^2 +12x +10

<u>Part B</u>:

f(0) = 0 + 0 + 10

f(0) = 10

7 0

3 years ago