1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
sweet-ann [11.9K]
3 years ago
5

Please help and show work if you can​

Mathematics
1 answer:
krok68 [10]3 years ago
4 0

Answer:

7.  x = 5

8. x = 2, y = 6

9. x = 21, y = 39

Step-by-step explanation:

For a parallelogram, the lengths across intersection are equal.

7. For a parallelogram, the lengths across intersection are equal.

So that,

3x = 4x - 5

4x - 3x = 5

 x = 5

8. For a parallelogram, the lengths across intersection are equal.

So that,

2x = 4

x = \frac{4}{2}

x = 2

and

y - 1 = 2y -7

7 - 1 = 2y - y

y = 6

x = 2, y = 6

9. For a parallelogram, opposite angles have equal value.

Thus,

3x = (4x - 21)

3x = 4x - 21

x = 21

and

3y = (y + 78)

3y = y + 78

3y - y = 78

2y = 78

y = \frac{78}{2}

  = 39

y = 39

x = 21, y = 39

You might be interested in
4x3 + 12x2 = 40x<br> How to solve by factoring
8090 [49]

Answer:

x=0    x=-5      x=2

Step-by-step explanation:

4x3 + 12x2 = 40x

Subtract 40x from each side

4x3 + 12x2 - 40x=0

Factor out 4x from each term

4x( x^2 +3x-10) =0

Factor the term insdie the parentheses

What 2 numbers multiply to -10 and add to 3

5*-2 =-10

5+-2 =3

We have (x+5) (x-2)  

Replace that in the equation

4x ( x+5) (x-2) =0

Using the zero product property

4x= 0  x+5 =0   x-2 =0

x=0    x=-5      x=2

6 0
3 years ago
Read 2 more answers
Find friends went to a baseball game three of the friends each bought a ticket for X dollars and a soda for eight dollars the ot
elixir [45]
If the other two friend also bought tickets for x dollars as the first three, than: 3x+3•8+2x=5x+24
If other two friends bought tickets for y dollars,different amount than x, than: 3x+3•8+2y=3x+24+2y=3x+2y+24
7 0
3 years ago
What is the mean of the data set? 12 18 26 12 32 A. 12 B. 18 C. 20 D. 22
Alexeev081 [22]
The mean of n numbers is the sum of these numbers divided by n.

12, 18, 26, 12, 32 \\ \Downarrow \\&#10;\hbox{the mean: } \frac{12+18+26+12+32}{5}=\frac{100}{5}=20

The mean of the data set is 20.
4 0
4 years ago
PLEASE HELPPPPPP 65 points
quester [9]

Answer:

x + 2y ≤ 12

x + 2y = 12

Step-by-step explanation:

The teachers can not give more than 12 hours of homework so this is the answer. those are the 2 equations you can use. It under 12 hours or equal to 12 hours.

7 0
4 years ago
Read 2 more answers
What is the probability that the first spinner will land on B, the second spinner will land on 3, and the third spinner will lan
Gemiola [76]
1 50-50
2 1/4
3 1/3 this is all about fractions
7 0
3 years ago
Other questions:
  • Caleb draws the prism shown here and calculates the volume. He then draws a second prism in which the dimensions are doubled. Wh
    6·1 answer
  • On october 14, bob has $20
    9·1 answer
  • Find the volume for the cylinder with the given measurement.
    6·2 answers
  • Based on the given angle measures what is the measure of QRS
    11·1 answer
  • ok so i know the answer is 96 but it won’t give me a mark because i haven’t wrote it properly?? someone tell me how i should wri
    13·1 answer
  • A figure is translated horizontally 4 units. Which drawing shows a correct translation? A B C D
    12·1 answer
  • Trigonometry help please show work. Due soon please help
    10·1 answer
  • Do y’all know the answer ?
    15·2 answers
  • Anybody can help me for BRAINLIST ? 6th grade math .. plz help
    12·2 answers
  • Find the measure of angle x in the figure below: (1 point)
    8·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!