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mrs_skeptik [129]
3 years ago
9

During this year, Laura read four less than twice the number of books ready by Stacy. If together, they read a total of 26 books

, how many did Stacy read?
Mathematics
1 answer:
Luba_88 [7]3 years ago
6 0

Answer:

7.333333... or 22/3

Step-by-step explanation:

ok soo it goes like this

ok soo it goes like this - (first one) let 2x-4= laura

ok soo it goes like this - (first one) let 2x-4= laura - (second one) let x= stacy

ok soo it goes like this - (first one) let 2x-4= laura - (second one) let x= stacy soo Laura = 2x-4

ok soo it goes like this - (first one) let 2x-4= laura - (second one) let x= stacy soo Laura = 2x-4x + 2x + 4 = 26

ok soo it goes like this - (first one) let 2x-4= laura - (second one) let x= stacy soo Laura = 2x-4x + 2x + 4 = 263x + 4 = 26 ( add x & 2x)

ok soo it goes like this - (first one) let 2x-4= laura - (second one) let x= stacy soo Laura = 2x-4x + 2x + 4 = 263x + 4 = 26 ( add x & 2x)3x = 22 (subtract 4)

divide by 3

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The cost c, to produce b baseball bats per day is modeled by the function c(b)=0.06b^2 - 7.2b + 390. What number of bats should
Finger [1]
You have two choices.
The minimum possible cost to operate your bat factory for a day is $390,
and there are two quantities of bats that both cost that much.

One possibility: 
                   Produce no bats at all per day.  Zero.  Nada.  None.
                   Cost = 0.06(0)²  -  7.2(0)  +  390  =  $390 per day.

The other choice:
                   Produce  120 bats per day.
                   Cost = 0.06(120²)  -  7.2(120)  +  390
                          = 0.06(14,400)  -  7.2(120)  +  390
                          =      864          -      864      +  390
                          =      $390  per day.

If you produce any other number of bats in a day ... more than zero
but not 120 ... then it will cost you more than $390 to operate the factory
that day.
8 0
3 years ago
Find a set of parametric equations of the line with the given characteristics. (Enter your answer as a comma-separated list of e
emmainna [20.7K]

This question is incomplete, the complete question is;

Find a set of parametric equations of the line with the given characteristics. (Enter your answer as a comma-separated list of equations in terms of x, y, z, and t.) The line passes through the point (3, 1, 2) and is parallel to the line given by x  = y = z.

Answer:

the set of parametric equations of the line with the given characteristics are; x = t+3, y = t+1, z = t+2

Step-by-step explanation:

Given that;

line x = y = z and point ( 3, 1, 2 )

the given line can be written as;

[x-0 / 1] = [y-0 / 1] = [z-0 / 1]

if two lines are parallel directional ratios are equal.

so DIRECTIONAL RATIOS  of given line is ( 1, 1, 1 )

therefore required line is;

[x-3 / 1] = [y-1 / 1] = [z-2 / 1] = t

⇒ [x-3 / 1] = t

x = t+3

[y-1 / 1] = t

y = t+1

[z-2 / 1] = t

z = t+2

Therefore the set of parametric equations of the line with the given characteristics are; x = t+3, y = t+1, z = t+2

8 0
3 years ago
A piece of string that is 9.4 meters long is cut into two pieces. One piece is 3 times as long as the other. Find the length of
xenn [34]

9.4=3x+x

9.4=4x

=2.35

the shorter piece is 2.35 and <u>the longer piece is </u><u>7.05</u>

5 0
3 years ago
The blue figure is a translation of the black image. Write a rule to describe the translation.
4vir4ik [10]

it has gone up 4 lines and left -2 making it go for a (4,-2)

5 0
3 years ago
I need to solve for 3x+7=-x-1
Andrew [12]

3x+7=-x-1

move -x to the other side

sign changes from -x to +x

3x+x+7=-x+x-1

3x+x+7=-1

4x+7=-1

move 7 to the other side

sign changes from +7 to -7

4x+7-7=-1-7

4x=-8

Divide by 4 for both sides

4x/4=-8/4

Answer: x=-2

3 0
3 years ago
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