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
AnnZ [28]
3 years ago
12

Can anyone please help me with problems 81, 83, and 86? PLeASE and THaNK YOU!

Mathematics
1 answer:
IgorC [24]3 years ago
8 0
81.
x \times 1.5 + x \times 2.5 +  \frac{x}{2}  \times 4 + ( \frac{x}{2}  + 1) \times 3 = 78 \\ 4 \times x + 4 \times  \frac{x}{2}  + 3 \times  \frac{x}{2}  + 3 = 78 \\ 4 \times x + 7 \times  \frac{x}{2}  = 75
multiply everything with 2
8 \times x + 7 \times x = 150 \\ 15 \times x = 150 \\ x =  \frac{150}{15}  \\ x = 10

x is the number of 1.50 and 2.50 wrenches he bought. do the calculations for the rest of them

83.
(x  + 2)\times  \frac{1}{4}  + x \times  \frac{1}{2}  = 11.75
multiply with 4
x + 2 + 2 \times x = 47 \\ 3 \times x = 47 - 2 \\ 3 \times x = 45 \\ x =  \frac{45}{3}  \\ x = 15
x is the amount of half dollars in the pile of coins. do the calculations for the quarters.

86.
3 \times x + 2 \times x + x = 24 \\ 6 \times x = 24 \\ x =  \frac{24}{6}  \\ x = 4
x is the amount of peaches cans, do the calculations for the rest.
You might be interested in
Segment AB is all points on the line between the endpoints A and B<br><br> True or false
fredd [130]
False because if it is a segment, it would only have two points at the ends so if there is points between the ones at the ends then it is multiple segments
4 0
3 years ago
Can someone write a story for a ration number 3:4 pls i really need some help on this
lianna [129]

Answer:

on a tabel there are 3 dogs and 4 cats

Step-by-step explanation:

8 0
3 years ago
Read 2 more answers
What are the next three terms in the sequence 2.0, 3.5, 5.0, 6.5, ... ?
Vaselesa [24]
U add 1.5 everytime
so the next 3 terms: 8, 9.5 and 11
5 0
3 years ago
Tucker and Blanca both went bowling last weekend, but not together. Tucker went during open bowling time, paying $1 for shoe ren
baherus [9]
They bowled for 3 hours and spent $7.
(I have no Idea how to make a graph on this website, so I can't help you there, sorry)
Let x = number of hours
Tucker: 2x+1
Blanca: x+4

2x+1 = x+4
x=3

For the graphs your lines should have equations like this:
y= 2x+1
y=x+4

The point of intersection of these lines should be at point (3,7)
8 0
3 years ago
Match the information on the left with the appropriate equation on the right.
solmaris [256]

Answer:

Step-by-step explanation:

1). Equation of a line which has slope 'm' and y-intercept as 'b' is,

y = mx + b

If slope 'm' = 1 and y-intercept 'b' = -3

Equation of the line will be,

y = x - 3

x - y = 3

2). Equation of a line having slope 'm' and passing through a point (x', y') is,

y - y' = m(x - x')

If the slope 'm' = 1 and point is (-1, 2),

The the equation of the line will be,

y - 2 = 1(x + 1)

y = x + 1 + 2

y = x + 3

x - y = -3

3). Equation of a line passing through two points (x_1, y_1) and (x_2,y_2) will be,

y-y_1=\frac{(y_2-y_1)}{(x_2-x_1)}(x-x_1)

If this line passes through (-2, 3) and (-3, 4),

y-3=\frac{(4-3)}{(-3+2)}(x+2)

y - 3 = -1(x + 2)

y = -x - 2 + 3

y = -x + 1

x + y = 1

4 0
3 years ago
Other questions:
  • An electrician cuts a 136 foot long piece of cable. One piece is 16 feet less than 3 times the length of the other piece. Find t
    6·1 answer
  • What is the sum of the reciprocal of 1/-13 and the reciprocal of -1/2
    6·1 answer
  • A school had an election where the candidates received votes in the ratio 1:2:3. If the winning candidate received 210 votes, ho
    6·1 answer
  • 6x + 5y = 4<br> - 6x + y = 20
    15·2 answers
  • A local city collects 8% sales tax. If the
    8·1 answer
  • 4x + y = -1<br> 4x - 3y = 7<br> Solve the simultaneous equation.<br><br> x=__<br> y=__
    9·1 answer
  • Please please help me this will go in my grade book and I'm failing rn pls pls pls and thank you​
    9·2 answers
  • At a local restaurant the amount of time that customers have to wait for their food is normally distributed with a mean of 26 mi
    6·1 answer
  • Graph the line<br> y= -2x - 4
    5·1 answer
  • Simplify.Your answer should contain only positive exponents.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!