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sergeinik [125]
3 years ago
9

Need help will give brainliest!!!! answer Part A and B plzzz!!!

Mathematics
1 answer:
jek_recluse [69]3 years ago
4 0

Answer:

Part A. C     Part B.  D

Step-by-step explanation:

Part A: First, if you know you want to have equal than or more than 78 then you know it goes on the right side of the inequality. Next, you have to pay attention to the inequality and remember it's meaning. !!!Remember!!!!

This: 10<11 means 10 is less than 11, or you can read it as 11 is greater than 10. Use that to choose between C and D.

Part B: This question requires you to solve the inequality and then construct a graph. You can easily take off A and C because you know you already have positive 13 sold and therefore your total will be positive.

So, solve the inequality to find C and reread the question so you remember the goal of this coat drive (remember the sign you used in Part A); once you do that you can choose between B and D.

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Catherine used the two points and the right triangle shown to find the slope of the line Catherine found the slope to be 1/10. I
blagie [28]

Answer:

Catherine is not correct (see the explanation)

Step-by-step explanation:

<u><em>The picture of the question in the attached figure</em></u>

we know that

The formula to calculate the slope between two points is equal to

m=\frac{y2-y1}{x2-x1}

the two points from the graph are

(4,40) and (7,70)

substitute the values in the formula

m=\frac{70-40}{7-4}\\m=\frac{30}{3}\\m=10

therefore

Catherine is not correct

4 0
3 years ago
CAN SOMEONE HELP ME PLEASE ILL GIVE BRAINLEST..I need step to step equation thanks​
Dmitrij [34]

Answer:

The required co-ordinate is (-2, -5).

Step-by-step explanation:

For a given point, reflection of a point (x, y) across a horizontal line y = k, the reflected co-ordinates will be: $ R_{y = k} = (x, 2k - y) $.

Here, (x, y) = (-2, 7) then reflection along the line y = 1, we get:

$ R_{y = 1} (-2, 7) = (-2, 2(1) - 7) $

= (-2, -5)

The reflected point is (-2, -5).

5 0
3 years ago
The area of the above polygon is ?<br>the answer is not 44
vitfil [10]
Check the picture below.

you really have two rectangles, a 6x10 and a 6x5, and surely you know what those areas are, so sum them up, and that's the area of the polygon.

6 0
3 years ago
How many endpoints are needed to draw ten line segments
timama [110]
20, 10 line segments each with 2 ends = 20
5 0
3 years ago
What is the area of this triangle ?
oee [108]

Answer:

Area of triangle is 9.88 units^2

Step-by-step explanation:

We need to find the area of triangle

Given E(5,1), F(0,4), D(0,8)

We will use formula:

Area\,\,of\,\,triangle =\sqrt{s(s-a)(s-b)s-c)} \\where\,\, s = \frac{a+b+c}{2}

We need to find the lengths of side DE, EF and FD

Length of side DE = a = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

Length of side DE = a = =\sqrt{(5-0)^2+(1-8)^2}\\=\sqrt{(5)^2+(-7)^2}\\=\sqrt{25+49}\\=\sqrt{74}\\=8.60

Length of side EF = b = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

Length of side EF = b = =\sqrt{(0-5)^2+(4-1)^2}\\=\sqrt{(-5)^2+(3)^2}\\=\sqrt{25+9}\\=\sqrt{34}\\=5.8

Length of side FD = c = \sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}

Length of side FD = c = =\sqrt{(0-0)^2+(8-4)^2}\\=\sqrt{(0)^2+(4)^2}\\=\sqrt{0+16}\\=\sqrt{16}\\=4

so, a= 8.60, b= 5.8 and c = 4

s = a+b+c/2

s= 8.6+5.8+4/2

s= 9.2

Area of triangle==\sqrt{s(s-a)(s-b)s-c)}\\=\sqrt{9.2(9.2-8.6)(9.2-5.8)(9.2-4)}\\=\sqrt{9.2(0.6)(3.4)(5.2)}\\=\sqrt{97.5936}\\=9.88

So, area of triangle is 9.88 units^2

4 0
3 years ago
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