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
VLD [36.1K]
3 years ago
8

Solve using the guess-and-test strategy. . . The math club has 57 members who are in sixth or seventh grades. There are twice as

many sixth graders as seventh graders. . . How many sixth graders are in the club?. . A.. 38. . B.. 37. . C.. 19. . D.. 18
Mathematics
1 answer:
REY [17]3 years ago
8 0
The guess-and-test strategy may be made easier by using the choices.
A. 38 sixth graders   ----> 57 - 38 = 19 . There are 19 seventh graders. This option already satisfy the condition that the number of sixth graders should be twice that of the seventh graders. There is no need to test for the remaining choices. The answer is letter A. 
You might be interested in
DeSean throws a ball up with an initial vertical velocity of 30 ft/s from a platform that is at ground level. How long will the
max2010maxim [7]

h=h+vi t-4.9t^2

h=h=0

0=vi t-4.9t^2= t(vi-4.9t)

t= 30/4.9 m/s

5 0
3 years ago
Read 2 more answers
Is 1.23 repeating rational or irrational
AleksAgata [21]
Looks like a irrational answer because it has a meaning
8 0
4 years ago
Read 2 more answers
What is the equation has intercepts at x(1, 0, 0), y(0, -1,0), and z(0, 0, 2)
bulgar [2K]

In intercept form, the plane that has these intercepts is ...

... x/(x-intercept) + y/(y-intercept) + z/(z-intercept) = 1

... x/1 + y/(-1) + z/2 = 1

... 2x -2y +z = 2 . . . . . in standard form

3 0
4 years ago
Match the following equation to the correct situation.
uranmaximum [27]

Answer:

The equation given in the question matches the situation C.

Step-by-step explanation:

A. The amount that Cindy paid for books was 15% of p i.e. it is only \frac{15p}{100} = 0.15p

B. The amount is given to a charity after saving 15% of p. That means if p is the amount of charity, then there were a savings of 15% of p.

Therefore, the total charity payment after savings = p - 15% of p = p - \frac{15p}{100} = p - 0.15p = 0.85p

C. The amount that Sandy paid for a shirt with 15% tax on p.

Therefore, if the price of a shirt is p, then total payment of Sandy after tax is = p + 15% of p = (p + \frac{15p}{100}) = p + 0.15p = 1.15p

Hence, the equation given in the question matches the situation C. (Answer)

8 0
4 years ago
Solve the system of equations -5x – 2y = 13 and 3x-y = 12 by combining the equations
Ne4ueva [31]

Answer:

x=1 y =15

Step-by-step explanation:

hopefully correct

-5x-2y=13 (i)

3x-y=12

-y=12-3x

y=-12+3x (ii)

substitute ii into i

-5x-2(-12+3x)=13

-5x +24-6x=13

-11x=-11

x=1

substitute x into ii

y=-12+3(1)

y=15

.

. . x=1 and y =15

4 0
3 years ago
Other questions:
  • Can the division expression 4÷15 be shown as a fraction? Why?
    15·2 answers
  • Can someone help me on questions 6 and 7 plz
    8·1 answer
  • My WiFi won’t woooorrrkk please help
    10·2 answers
  • Based on the number line below, which statement is true?
    12·2 answers
  • Determine whether lines L1 and L2 passing through the pairs of points are parallel, perpendicular, or neither. L1 : (–5, –5), (4
    7·1 answer
  • Can somebody please help i’ve posted this 1 time and people just used it for points
    9·1 answer
  • Whats an example of a quadratic equation that cannot be factored with a real solution?
    8·1 answer
  • Write the equation of the line in standard form that has slope m= -4 and through the point (3,-7).
    14·1 answer
  • QS and RT are diagonals of parallelogram QRST. RT = 21, SU = 9, and angle RQT = 101. Find RU and QS.
    14·1 answer
  • What is the classification of the triangle by its angles and by its sides?
    12·2 answers
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!