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
yarga [219]
3 years ago
9

Help me with 4-9pleasw

Mathematics
1 answer:
stira [4]3 years ago
8 0

Answer:

4. d= =  -0.5

9.  b= -2.2


You might be interested in
Which galaxy is the farthest from Earth?<br>galaxy a<br>galaxy b<br>galaxy c<br>galaxy d​
harina [27]
Galaxy c is the farthest
5 0
3 years ago
The perimeter of a rectangle is about 13.9 cm. If you double the width of the rectangle the perimeter is about 17.8 cm. Find the
fredd [130]

Answer:

5cm by 1.95cm

Step-by-step explanation:

Let the length of the rectangle be x

Let the width be y

Perimeter of a rectangle = 2x + 2y

If the initial perimeter of a rectangle is about 13.9 cm, then;

13.9 = 2x + 2y ..... 1

If when the width is double the perimeter is 17.8cm, then;

17.8 = 2x + 4y ..... 2

Subtract 1 from 2;

13.9 - 17.8 = 2y - 4y

- 3.9 = -2y

y = 3.9/2

y = 1.95 cm

Substitute y = 1.95 into 1 to get x;

From 1;

13.9 = 2x + 2y

13.9 = 2x + 2(1.95)

13.9 = 2x + 3.9

2x = 13.9-3.9

2x = 10

x = 5 cm

Hence the dimension of the smaller triangle is 5cm by 1.95cm

7 0
2 years ago
Rate of change for y= 2/3x-48
tangare [24]

Answer:

2/3

Step-by-step explanation:

The rate of change is the same thing as the slope of a line

4 0
2 years ago
I need the answer fore both plsss
grandymaker [24]

Answer:  6i) 6a² - 2ab

               6ii) -2b³

               6iii) b³ + 7b² - 49b

<u>Step-by-step explanation:</u>

6i)   (a + b)(5a - 3b)             +    (a - 3b)(a - b)

=    5a² - 3ab + 5ab - 3b²   +    a² - ab - 3ab + 3b²

=    5a² + 2ab - 3b²             +   a² - 4ab + 3b²

= 6a² - 2ab

6ii)    (a - b)(a² + b² + ab)              -  (a + b)(a² + b² - ab)

=   a³ + ab² + a²b - ab² - a²b - b³ -  (a³ + ab² - a²b -ab² + a²b + b³)

=   a³ - b³                                      -  (a³ + b³)

=   a³ - b³                                      - a³ - b³

= -2b³

6iii) (b² - 49)(b + 7)             +     343

=     b³ + 7b² - 49b - 343    +    343

=     b³ + 7b² - 49b

You are allowed a maximum of 3 questions.

Please post #7 on a different question.

5 0
3 years ago
Which expression is equivalent to the given expression? 99pts giveaway
storchak [24]
3x(1.05) = 3.15x

1.05x + 1.05x + 1.05x = 3.15x
6 0
3 years ago
Read 2 more answers
Other questions:
  • What’s the Final answer
    7·1 answer
  • Create a number sentence that results in -14​
    5·1 answer
  • If u(x)=-2x^2+3 and v(x)=1/x, what is the range of (uov)(x)
    5·2 answers
  • A rectangular Persian carpet has a perimeter of 192 inches. The length of the carpet is 18 inches more than the width. What are
    7·2 answers
  • What is the scale factor of the dilation
    13·2 answers
  • Weight of a parakeet customary unit
    6·1 answer
  • PLS MY GRADE IS LOW!! IVE BEEN ASKING SINCE YESTERDAY!! LITTERALLY!!! EXTREAMLY EASY I AM JUST AFRAID TO GET THIS WRONG SO IF YO
    10·1 answer
  • If a roadrunner bird can run 14 miles per hour, that's 7 times faster than an ostrich can walk. How fast does an ostrich walk?
    10·1 answer
  • Penny makes 5 liters of applesauce. She saves 0.24 liter for dinner and puts the rest in jars. If each jar holds 0.68 liter, how
    5·2 answers
  • Solve the equation for all values of x.<br> ∣4x + 4 ∣- 10 = 3x
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!