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Dominik [7]
3 years ago
10

Help me pls this is hard

Mathematics
1 answer:
ohaa [14]3 years ago
5 0

Answer:

Opposite angles are right angles.

Step-by-step explanation:

There are no right angles in a parallelogram.

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In parallelogram DEFG, DH = x + 1, HF = 3y, G H = 3 x − 4 , and HE = 5y + 1. Find the values of x and y. The diagram is not draw
Nana76 [90]

Answer:

see explanation

Step-by-step explanation:

Using the property of parallelograms

• The diagonals bisect each other, hence

DH = HF and GH = HE

x + 1 = 3y and 3x - 4 = 5y + 1 ⇒ 3x = 5y + 5

Solving the 2 equations simultaneously

x + 1 = 3y → (1)

3x = 5y + 5 → (2)

rearrange (1) expressing x in terms of y

x = 3y - 1 → (3)

substitute x = 3y - 1 in (2)

3(3y - 1) = 5y + 5

9y - 3 = 5y + 5 ( subtract 5y from both sides )

4y - 3 = 5 ( add 3 to both sides )

4y = 8 ( divide both sides by 4 )

y = 2

substitute y = 2 into (3)

x = (3 × 2) - 1 = 6 - 1 = 5

Hence x = 5, y = 2



3 0
3 years ago
I need help with this slope question grade 10 math
Bingel [31]

Step-by-step explanation:

a) D=(-1,5) E=(-3,1)

b) you do it by adding B coordinates with each other and C coordinates with each other then comparing how its related to D coordinates and E coordinates. B=2+6=8

C= -2-2= -4 D= -1+5= -4 E=-3+1= -2.

or tou can try another method which is knowing the length of each line.

5 0
3 years ago
1# Mr. Sanchez bought 2 magazines for $9.95 each and 1 book for $14.95. If the sales tax is 6%, what is the total cost of Mr. Sa
8090 [49]

Answer:

#1: $36.94

#2: 4.9 continuous

#3?

#4 $18

#5 64in squared

Step-by-step explanation:

#1 2x9.95+19.9

$19.90+$14.95=34.85

6% of 34.85=2.09

$34.85+$2.09=

$36.94

#4 8 yards = 24 feet

432/24=

18

#5 4x2=8

8x8=64

remember to make sure it is squared because it is area

7 0
3 years ago
PLEASE HELP<br><br><br> Solve.<br><br> 5x+2/2 = 2x - 1<br><br> X = ________ ?
lakkis [162]
5x + 2/2 = 2x - 1
2/2 is basically 1 so
5x + 1 = 2x - 1
isolate the variable
5x + 1 = 2x - 1
      -1          -1
5x = 2x -2
-2x   -2x
3x = -2
solve
3x/3=-2/3
x=-2/3
4 0
4 years ago
How do you solve the compound inequality? 6 – x &gt; 15 or 2x – 9 ≥ 3
Masja [62]

Answer:

x < -9 or  x ≥ 6

Step-by-step explanation:

6 – x > 15 or 2x – 9 ≥ 3

Solve each inequality

6-x > 15

Subtract 6 from each side

6-x-6 > 15-6

-x > 9

Multiply by -1 remembering to flip the inequality

x < -9

Then the other inequality

2x – 9 ≥ 3

Add 9 to each side

2x -9+9≥ 3 +9

2x≥ 12

Divide by 2

2x/2 ≥ 12/2

x ≥ 6

Put back together

x < -9 or  x ≥ 6

4 0
3 years ago
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