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4 years ago

Can someone help me with these question?

Mathematics

2 answers:

vesna_86 [32]4 years ago

7 0

You can only ask one question per post. I will do question number 1. If segment AB is divided into a ratio of 2:3, that means point M is found 2/5s of the way down the segment AB (starting from point A).

So if the change in the x-direction from point A to point B +20, then point M is found 2/5 of 20 away from point A, which is 8. So x-value of point M is 8.

And if the change in the y-direction from point A to point B is -15, then point M is found 2/5 of -15 away from point A, which is -6. So -6 from 15 is the y-value of 9. So the y-value of point M is 9.

So point M is (8,9). The answer is A.

PtichkaEL [24]4 years ago

4 0

Ummm these aren't really shown properly

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If a triangle has angles measuring 15 degrees and 45 degrees what is the measure of the triangle's third angle?

enot [183]

Answer:

120 degrees

Step-by-step explanation:

Remember that the interior angles of a triangle always add up to 180 degrees. We know that two of the angles (45 and 15) add up to 60 degrees. Now we just have to subtract the 60 degrees we have from the 180 degree total in order to get the measure of the missing angle.

180 - 60 = 120

Therefore... the answer is 120 degrees

3 0

3 years ago

NEED HELP ASAP!! FIRST ONE TO GET THE ANSWER RIGHT GETS THE MOST BRAINLIEST

kobusy [5.1K]

Answer:

125

Step-by-step explanation:

Add all the angles then subtract by 360.

4 0

3 years ago

Read 2 more answers

A scatter plot is shown below: A graph shows numbers from 0 to 10 on the x axis at increments of 1 and the numbers 0 to 15 on th

Mrrafil [7]

Answer:

B (0, 14) and (10, 1)

Step-by-step explanation:

Option A: (0, 14) and (10, 14)

Equation of line using two point slope form .

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

$(x_1,y_1)=(0,14)$

$(x_2,y_2)=(10,14)$

Substitute values in formula :

$y-14=\frac{14-14}{`10-0}(x-0)$

$y-14=0(x-0)$

$y=14$

Option B : (0, 14) and (10, 1)

Equation of line using two point slope form .

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

$(x_1,y_1)=(0,14)$

$(x_2,y_2)=(10,1)$

Substitute values in formula :

$y-14=\frac{1-14}{`10-0}(x-0)$

$y-14=\frac{-13}{10}(x-0)$

$y=\frac{-13}{10}x+14$

Option C: (0, 7) and (7, 0)

Equation of line using two point slope form .

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

$(x_1,y_1)=(0,7)$

$(x_2,y_2)=(7,0)$

Substitute values in formula :

$y-7=\frac{0-7}{`7-0}(x-0)$

$y-7=\frac{-7}{7}(x)$

$y= -x+7$

Option D: (0, 7) and (3, 0)

Equation of line using two point slope form .

$y-y_1=\frac{y_2-y_1}{x_2-x_1}(x-x_1)$

$(x_1,y_1)=(0,7)$

$(x_2,y_2)=(3,0)$

Substitute values in formula :

$y-7=\frac{0-7}{`3-0}(x-0)$

$y-7=\frac{-7}{3}(x)$

$y=\frac{-7}{3}(x)+7$

Now after plotting all the lines of given options on the graph of scatter plot we can see that the blue line $y=\frac{-13}{10}x+14$ of Option B the is the line of best fit for this scatter plot Since it is covering almost all ordered pairs of scatter plot.

Hence two ordered pairs can be joined to best draw the line of best fit for this scatter plot are (0, 14) and (10, 1)

Option B is correct.

5 0

3 years ago

Read 2 more answers

You are volunteering to help with the soccer team fundraiser for Valentine's Day. Your team promised to deliver one 16 ounce bag

icang [17]

The student, who suggests that if we do half and half of each bag, we will be giving them at least 60%,<u> is correct</u>.

<h3>What is the implication of the phrase "at least"?</h3>

The phrase "at least" means the minimum that is true or possible.

Mathematically, by "at least," we mean 'equal to or greater than.'

<h3>Data and Calculations:</h3>

Since each bag of nuts contain 16 ounces,

The 1st bag contains x/2 ounces (50%) of plain nuts and x/2 ounces (50%) of chocolate-covered nuts.

The 2nd bag contains x/5 ounces (20%)of plain nuts and 4x/5 ounces (80%) of chocolate-covered nuts.

If half of the 1st bag is mixed with half of the 2nd bag, each bag will contain only 65% (that is, 25% (50%/2) from the 1st bag and 40% (80%/2) from the 2nd bag).

Thus, the student, who suggests that if we do half and half of each bag, we will be giving them at least 60%, <u>is correct</u> since they will not be given less than 60% of chocolate-covered nuts inside.

Learn more about proportions at brainly.com/question/870035

#SPJ1

7 0

2 years ago

Help pls !! Im awful with math and I already failed and this is a makeup test >-<

ahrayia [7]

Answer:

29.4 degrees

Step-by-step explanation:

a = 53 cm = opposite side to the angle

b = 94 cm = adjacent side to the angle $\alpha$

tan = opp/adjacent = 53/94 = 0.5638

$\alpha$ = inverse tangent of .5638 = tan⁻¹ (.5638) = 29.4₋⁰

5 0

3 years ago