MATHEMATICS MIDDLE SCHOOL

Combine the like terms to create an equivalent expression:
4z-(-3z)

Answers

Answer 1
Answer:

4z- (-3z) is 7z because two negative signs make a positive sign.

Answer 2
Answer:

Answer:

4z+3z=7z

Step-by-step explanation:

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The number of miles Abigail’s boat travels, m, varies directly with the amount of time Abigail spends boating, t. If she spends 2 h in her boat, she travels 19 mi. Which direct linear variation equation models the information?A.
m = 4.5t

B.
m = 9.5t

C.
m = 17t

D.
m = 21t

Answers


B. m = 9.5t

Hope this helps

the answer is B m=9.5t because you have to CONVERT the equation into M=K/T  then youll solve from there.

James wants to compete in the international speed texting competition next year where participants compete on text speed and accuracy. James’s current text speed is 2 characters per second. James has found that his texting speed increases at a rate of 1⁄2 a character per second for each month that he practices. What is James’s new texting speed if he practices for only 1 month? __________
b. What is James’s new texting speed if he practices for 2 months? ____________
c. What is his new texting speed if he practices for 3 months? _____________
d. Write an algebraic equation that gives James’s texting speed s for m months of
practice.

Answers

Answer:

A. 2.5 b. 3 c. 3.5 d. 2 + .5m = CPS ( character per second)

Step-by-step explanation:

If the Campbell Candy company can produce Sarah's special candy bars at 100 for $165 and 600 for $195 write the cost function for the production process?

Answers

so we see that it is x and y
x is number of candy bars
y is cost

so the numbers are
100,165 and 600,196

first we want to make it into slope inercept form
y=mx+b m=slope, b=y inercept

slope= (y1-y2)/(x1-x2)=(165-196)/(100-600)=-31/-500=31/500

slope is 31/500

y=31/500x+b
subsitute
165=31/500(100)+b
165=31/5+b
subtract b from both sides
165-b=31/5
multiply both sides by 5
5(165-b)=31
325-5b=31
add 5 b to both sides
325=31+5b
subtaract 31 from both sides
294=5b
divide both sides by 5
48 and 4/5=b=48.8

y=31/500x+48.8

Which of the following is an equation of the circle with its center at (0,0) that passes through (3,4) in the standard (x,y) coordinate plane?F. x – y = 1
G. x + y = 25
H. x^2 + y = 25
J. x^2 + y^2 = 5
K. x^2 + y^2 = 25

Answers

The distance from the origin to the point (3,4) is the radius of the circle.

That distance is √(3² + 4²) = √(9 + 16) = √25 = 5 .

The equation of a circle centered at the origin is

x² + y² = (radius)²

So this circle is [ x² + y² = 25 ]

That's Choice-'K'.

What is the sale price of a toy rocket originally priced at $92?

Answers

What is the mark down

Answer:

$69

Step-by-step explanation:

1 - 0.25 = 0.75

original price * (1 - markdown) = sale price

$92 * 0.75 = sale price = $69

What is the formula for finding the area of a triangle

Answers

Answer:

A=1/2(b)(h)

Step-by-step explanation:
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