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2 years ago

Help Please!!!!. I need help with this assignment.

Mathematics

1 answer:

Akimi4 [234]2 years ago

5 0

Find the slopes of each line.

We can use rise/run or m= (x2-x1)/(y2-y1)

But, before going on, the green line is completely straight. A slope is a level of decreasing or increasing value. It is constant, it is the same.

The slope of L3 (green) = 0. (B. m=0)

Let's find the slopes of the other two.

First, blue. Find two points. (3,-2) (5,-1)

m= (-1-(-2))/ (5-3)

m= (-1+2)/(5-3)

m= (1/2) or 0.5

L1= 0.5 (A. m=0.5)

So, It takes a while to find slope- so I won't solve the last one. But, we know that...

L2= C. m= -1.6

I hope this helps!
~kaiker

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Which expression is equivalent to -7(y - 2)

Neko [114]

The expression equivalent to -7(y - 2) is -7y + 14

<h3>Which expression is equivalent to -7(y - 2)?</h3>

Given the expression; -7(y - 2)

We expand the expression by multiplying each element inside the parentheses the element out i.e -7

-7(y - 2)

[ -7 × y and -7 × -2 ]

-7y + 14

Therefore, the expression equivalent to -7(y - 2) is -7y + 14.

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1 year ago

A study was recently conducted to estimate the mean cholesterol for adult males over the age of 55 years. From a random sample o

Komok [63]

Answer: Correct critical value = 2.2622

Step-by-step explanation:

Confidence interval for population mean when population standard deviation is unknown:

$\overline{x}\pm t_{\alpha/2}\dfrac{s}{\sqrt{n}}$ , where $\overline{x}$ = sample mean, n= sample size, s= sample standard deviation, $t_{\alpha/2}$ = two-tailed t value.

As per given: n= 10

degree of freedom : df = n-1=9

$\overline{x}=242.6\\\\s=73.33\\\\\alpha=5\%=0.05$

Critical t-value : $t_{\alpha/2,df}=t_{0.05/2,9}=t_{0.025,9}=2.2622$

So, the 95 percent confidence interval estimate for the mean :

$242.6\pm (2.2622)\dfrac{73.33}{\sqrt{10}}\\\\=242.6\pm (2.2622)(23.19)\\\\\approx242.6\pm52.46\\\\=(242.6-52.46,\ 242.6+52.46)\\\\=(190.14,\ 295.06)$

The 95 percent confidence interval estimate for the mean:(190.14, 295.06)

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2 years ago

Marco is making three tiles pictures. he uses 310 green tiles to make each picture. he uses 50 fewer red tiles than green tiles

Anettt [7]

Hi there!

To solve this problem, we need to first find the amount of red tiles he used by subtracting 50 from 310, and then finding the sum of the two numbers.

310 - 50 = 260

Now, we know that there are 260 red tiles.

3 * 310 = 930
3 * 260 = 780

930 + 780 = 1710

So, the answer is 1710 tiles total.

Hope this helps!

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3 years ago

Help me with this!!! What is x

romanna [79]

Answer:

58º

Step-by-step explanation:

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2 years ago

Read 2 more answers

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