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3 years ago

Can someoene help with this please?

Mathematics

1 answer:

Natalija [7]3 years ago

6 0

Put them all in an equation where (m<1)+(m<2)+(m<3)=180 because all the angles of a triangle added together equals 180. From there, solve for x using algebra. Combine like terms and then isolate x. For the second part, use the value you found for x and find the measurement of angle 3. angle 4 is supplemental to angle 3 because angle 3 plus angle 4 is equal to 180 degrees. subtract the measurement of angle 3 from 180 to find angle 4. let me know if you have any trouble. i will find a computer to better explain if needed. im using a mobile phone, so communication is a bit limited

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Multiply these polynomials.

maksim [4K]

When we multiply the polynomials we will get:
(5x^2+2x)(3x^2-7x+4)
=5x^2(3x^2-7x+4)+2x(3x^2-7x+4)
=15x^4-35x^3+20x^2+6x^3-14x^2+8x
=15x^4+(6x^3-35x^3)+(20x^2-14x^2)+8x
=15x^4-29x^3+6x^2+8x
The correct answer is C

4 0

3 years ago

What is the totale of the recta square meter

yan [13]

Answer:

Step-by-step explanation:

7 0

2 years ago

Compare the number of friends at the beginning of a month and at the end of that month if it decreased by 60 and increased by 80

inn [45]

Answer:

plus 20 or positive

Step-by-step explanation:

-60+80= 20

positive

3 0

3 years ago

At the city Museum child admission is $6.40 in adult admission is $9.70 on Sunday 149 tickets were sold for a total sales of $11

Law Incorporation [45]

Answer:

Adult=58

Step-by-step explanation:

c=child, a=adult

6.4c+9.7a=1145 equation 1

c+a=149 equation 2

a=149-c modified equation 2 to isolate a

6.4c+9.7(149-c)=1145 substitute value of a from equation 1 into equation 2

6.4c+1445.3-9.7c=1145

-3.3c=-300.3

c=91

solve for a

c+a=149

91+a=149

a=58

Check answer:

6.4c+9.7a=1145

6.4(91)+9.7(58)=1145

582.40+562.60=1145

1145=1145

8 0

3 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

7 0

4 years ago