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2 years ago

Can someone plz help me plz I beg uuuu plz I will really appreciate it

Mathematics

2 answers:

charle [14.2K]2 years ago

8 0

X is equal to 45 because the whole thing is supposed to equal 180

melisa1 [442]2 years ago

7 0

Answer:

x=45

Step-by-step explanation:

(2x+10) + 30 + 50 = 180

2x+10+30+50 = 180

2x+90=180

2x=90

x-45

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Komok [63]

Answer:

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3 years ago

Use the pythagorean Theorem to find the value of m A) 16 B) 12 C) 20 D) 256

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2 years ago

Read 2 more answers

Eighty, decreased by three times a

Marina86 [1]

Answer:

The number is 9.

Step-by-step explanation:

Lets write this as an equation first. We'll substitute the number for the variable x.

80 - 3x = 5x + 8

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80 - 3x + 3x = 5x + 3x + 8

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2 years ago

0 A maker of a certain brand of low-fat cereal bars claims that the average saturated fat content is 0.5 gram. In a random sampl

balandron [24]

Answer:

The first step is to determine the average

$x= \frac{0,6+0,7+ 0,7+0,3+0,4+ 0,5+ 0,4 +0,2}{8}\\\ x= 0,475$

The exercise says it’s a normal distribution: (n=8)

$s^{2}= \frac{1}{n-1} ((0,6.x)^2+2(0,7-x)^2+(0.3-x)^2+2(0.4-x)^2+(0.5-x)^2+(0.2-x)^2)\\\ \frac{1}{7}*0,235 = 0,0336 \\\\ s= 0183$

According to the exercise, the mean is equal to 0,5 then the value of t of the distribution can be obtained

$t= \frac{x-u}{\frac{s}{\sqrt{n} }}\\\ t= \frac{0,475 - 0,5}{0,183}\\\ t= -0,3860$

The variable t has 7 grade to liberty, we calculate the p-value as:

$2* P(t < - 0,3860)= \\\ 2* 0,3554 = 0,7108$

This value is very high, therefore the hypothesis is not rejected

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3 years ago

Which of the following inequalities matches the graph? PLZ HELP DUE TODAY

balandron [24]

Answer:

A. 2x + y < 7

Step-by-step explanation:

the slope is negative and the y-intercept is positive

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2 years ago