3 years ago

Find the difference (d - 9) - (3d - 1)

Mathematics

1 answer:

Neko [114]3 years ago

7 0

Answer:

-2d-8

Step-by-step explanation:

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Use multiplication to find 5% of 180

jenyasd209 [6]

180×0.05=9
So 5% of 180 is 9

3 0

3 years ago

7x + 10y = 96; 5x - 2y = 32

Andrew [12]

Answer:

x=8, y=4

Step-by-step explanation:

7x + 10y = 96

5(5x - 2y = 32)

7x + 10y = 96

25x - 10y = 160

32x = 256

x = 8

7(8) + 10y = 96

56 + 10y = 96

10y = 40

y = 4

3 0

3 years ago

Find the area of the equilateral triangle. Round to the nearest tenth.

vekshin1

Answer:

the correct answer is 36cm2

5 0

3 years ago

Which statements are correct about the following expression? Select TWO that apply. <br> 2y + 1

Marina86 [1]

Answer:

Step-by-step explanation:

2y + 1 is a binomial, in that it has two terms.

If we set 2y + 1 equal to x, then 2y = x - 1, or

x - 1

y = -----------

3 0

3 years ago

The vertices of triangle PQR are given in the standard (x,y) coordinate plane below. What is the area, in the square coordinate

alekssr [168]

Answer:

Area = 12

Step-by-step explanation:

Given

See attachment

Required

Area of $\triangle PQR$

From the attached image, we have:

$P = (6,10)$

$Q = (10,8)$

$R = (6,4)$

The area is then calculated as:

$A = \frac{1}{2}|(x1y2 - x2y1) + (x2y3 - x3y2) + (x3y1 - x1y3)|$

So, we have:

$A = \frac{1}{2}|(6*8 - 10*10) + (10*4 - 6*8) + (6*10 - 6*4)|$

Using a calculator:

$A = \frac{1}{2}|-24|$

Remove absolute bracket

$A = \frac{1}{2} * 24$

$A = 12$

8 0

3 years ago