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
shutvik [7]
3 years ago
7

Please solve all the questions or at least one thanks. Help!

Mathematics
2 answers:
azamat3 years ago
7 0
4. 10 and 5 are the dimensions
Stels [109]3 years ago
7 0
X = apples and y = oranges
3x + 2y = 9.93...multiply by 2
2x + 3y = 9.82...multiply by -3
------------------
6x + 4y = 19.86 (result of multiplying by 2
-6x - 9y = - 29.46 (result of multiplying by -3)
-----------------add
-5y = - 9.6
y = -9.6 / -5
y = 1.92 <==== cost per kg for oranges

2x + 3y = 9.82
2x + 3(1.92) = 9.82
2x + 5.76 = 9.82
2x = 9.82 - 5.76
2x = 4.06
x = 4.06/2
x = 2.03 <== cost per kg per apples
========================
P = 2(L + W)
P = 30
L = 2W

30 = 2(2W + W)
30 = 2(3W)
30 = 6W
30/6 = W
5 = W <=== width is 5 cm

L = 2W
L = 2(5)
L = 10 <== length is 10 cm
=======================
x = first number and y = second number
4x + 3y = 15....multiply by 2
3x - 2y = 7...multiply by 3
-----------------
8x + 6y = 30 (result of multiplying by 2)
9x - 6y = 21 (result of multiplying by 3)
----------------add
17x = 51
x = 51/17
x = 3 <=== first number

3x - 2y = 7
3(3) - 2y = 7
9 - 2y = 7
-2y = 7 - 9
-2y = -2
y = -2/-2
y = 1 <=== second number
======================
x = sons age and y = fathers age
2x + y = 95
x + y = 70...multiply by -1
-------------
2x + y = 95
-x - y = -70 (result of multiplying by -1)
------------add
x = 25 <== sons age

2x + y = 95
2(25) + y = 95
50 + y = 95
y = 95 - 50
y = 45 <=== fathers age
=====================
sorry but I dont know the last one...never was good at those kinds of problems

You might be interested in
For any positive numbers a, b, and d, with b. 1, logo(ag=
goldenfox [79]
Pretty sure it’s b BBbBBhVvbBbBBUVVVbBhHh
3 0
3 years ago
Given a point on a line and the equation of a parallel or perpendicular line, write the equation of the line in point-slope form
Arlecino [84]

Answer: y - 5 = 0(x - 1)

==================================================

Explanation:

Recall that point slope form in general is written as such

y - y1 = m(x - x1)

where,

m is the slope

(x1,y1) is the point the line goes through

The given equation y = 7 can be written as y = 0x+7. So we see that this line has a slope of m = 0

Plug m = 0 along with the given point (x1,y1) = (1,5) into the point slope equation and we get

y - y1 = m(x - x1)

y - 5 = 0(x - 1)

which is the final answer

note: the equation in bold can be rearranged and simplified to get y = 5; however your teacher seems to want the answer in point-slope form, so we leave it as such.

6 0
3 years ago
Find the average rate of change for the given function from x = −1 to x = 2.
Mashutka [201]

the \: average \: rate \: of \: change =  \frac{f(x2) - f(x1)}{x2 - x1}  \\  \frac{f(2) - f( - 1)}{ 2 -  - 1}  =  \\  \frac{ - 3(2) + 2 - ( - 3( - 1) + 2)}{3} =   \\  \frac{ - 6  + 2 - 3 - 2}{3}  =  \frac{ - 9}{3}  =  - 3
3 0
3 years ago
Read 2 more answers
Solve pleasee<br><br> x(7-x)&gt;8
maks197457 [2]

I forgot about this one!! I lbew but I lost it!! Sorry :(

3 0
3 years ago
John is driving around town. When he reaches the gas station, he notes that he has traveled 20 miles. He reaches home 2 hours la
Troyanec [42]

Answer:

d=5t+20

Step-by-step explanation:

The equation that will model this situation will be of the form

d=mt+b

where t is the time in hours john has traveled since the gas station, and  d is the distance.

Now we know that John has already traveled 20 miles when he is at the gas station, this means at t=0, d=20; or

20=m(0)+b

\boxed{b=20}

Thus we have

d=mt+20.

Now we need to figure out m.

When John reaches home 2 hours later he notes that he has traveled 30 miles, which means he has traveled 30 - 20 = 10 miles; thus we have

m= \frac{\Delta d}{\Delta t} =\frac{10 miles}{2hours} =5

\boxed{m=5}

Now we have the full equation:

\boxed{d=5t+20}

8 0
3 years ago
Other questions:
  • What is .5333 as a fraction?
    12·1 answer
  • Caroline bald 20 shares of stock at 10 1/2 and after 10 months the value of the stock was 11 one fourth if Caroline was to sell
    5·1 answer
  • If all the beads in a jar are either orange or purple and the ratio of orange to purple beads is 6 to 5, what is the ratio of th
    6·1 answer
  • Ortencia made the following grades on her tests: test #1, 90; test #2, 80; test #3, 95; test #4, 90; test #5, 85. She wants to p
    11·1 answer
  • Can you solve?<br><br> 24 = 7/8 g<br><br> A. 3/7<br> B. 21<br> C. 23 1/8<br> D. 37 3/7
    8·2 answers
  • Solve the equation: <br> - 5 = 5x + 7
    10·2 answers
  • Tom has a comic book with 85 pages. He has read 30 of the pages so far. What percentage of the book has Tom read?
    8·1 answer
  • Find the area. Answer ASAP pls pls
    12·1 answer
  • Write the equation that shows the relationship in the table
    14·1 answer
  • Select the expression that is equivalent to m(y + o).
    7·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!