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nataly862011 [7]
3 years ago
9

HELPPPP PLEASEEE MATH $0.57 $1.75 $5.50 $6.50

Mathematics
1 answer:
lubasha [3.4K]3 years ago
5 0
3.5 / 2 = $1.75

answer is B
cost of one pen: $1.75
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I don’t know what the answer to this question is , help
ipn [44]

Answer:

(4, 0)

Step-by-step explanation:

given the 2 equations

y = x - 4 → (1)

- 4x - 6y = - 16 → (2)

substitute y = x - 4 into (2)

- 4x - 6(x - 4) = - 16

- 4x - 6x + 24 = - 16

- 10x + 24 = - 16 ( subtract 24 from both sides )

- 10x = - 40 ( divide both sides by - 10 )

x = 4

substitute x = 4 into (1) for corresponding value of y

y = 4 - 4 = 0

solution is (4, 0)

3 0
4 years ago
Pleeeeeaseeee HELPP
ElenaW [278]

Answer:

A

Step-by-step explanation:

8 0
3 years ago
Brooklyn began her school day with 25 pieces of gum and gave x amount away. Amy
malfutka [58]

Answer:15

Step-by-step explanation:

3 0
3 years ago
For Tran Please help is appreciate it
Ostrovityanka [42]

Answer:

A = 38°

Step-by-step explanation:

We are going to use cosine law to find angle A where

a = 4.7

b = 3.9 m

c = 2.9 m

{c}^{2}  =  {a}^{2}  +  {b}^{2}  - 2ab \cos(  \alpha )

or

\cos( \alpha  )  =  \frac{ {a}^{2}  +  {b}^{2} -  {c}^{2}  }{2ab}

cos A = [(4.7)^2 + (3.9)^2 - (2.9)^2]/2(4.7)(3.9)

= 28.89/36.66

= 0.788

A = arccos(0.788) = 38°

6 0
3 years ago
PLS HELP!! this is due today pls help me thank u so much.
riadik2000 [5.3K]

Answer:

23.3

Step-by-step explanation:

Use phyth. Thm.

a^2 + b^2 = c^2

A and B are the side lengths, and C is the hypotenuse. The hypotenuse is across the right angle.

Since you only have one side length and the hypotenuse this what your equation will look like:

30^2 + x^2 = 38^2

900 + x^ = 1444

544 = x^2

x = roughly 23.3

8 0
3 years ago
Read 2 more answers
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