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pychu [463]
3 years ago
7

What is the value of the expression below when y 8 and z = 8? 9y + 3z​

Mathematics
1 answer:
aleksley [76]3 years ago
6 0

Answer:

96

Step-by-step explanation:

8y+3z

9(8)+3(8)

72+24

96

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THIS IS WORTH 50 POINTS WILL MARK BRAINLYEST PLEASE HELP
zloy xaker [14]
Since the first equation says y= x-4, substitution that for the y value in x + y = 6

x + x - 4 = 6

add up the x’s to get 2x - 4 = 6

add 4 to both sides to get 2x = 10

divide both sides by 2 to get x = 5

the x value is 5

then, to figure out the y value, substitute 5 for the x value in y = 5-4

the y value is 1

final answer: x = 5 and y = 1

hope this helped!!
8 0
2 years ago
A particle is moving along the curve y=22x+1−−−−−√y=22x+1. As the particle passes through the point (4,6)(4,6), its xx-coordinat
Ahat [919]

Answer:

the rate of change of the distance from the particle to the origin at this instant = 3.33unit/secs

Step-by-step explanation:

The approach to solve the question involves , concept of rate of change in differentiation, implicit differentiation and appropriate substitution were made to get the rate of change of distance.

The steps are as shown in the attached file.

3 0
3 years ago
Which of the expressions are equivalent to the one below? Check all that
USPshnik [31]
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6 0
3 years ago
Read 2 more answers
A batting machine uses an automatic baseball feeder. During baseball
Inessa05 [86]

The feeders in battling machine are represented in proportions and fractions.

  • The equation that represents the problem is: \mathbf{\frac 16x + 15 = \frac 23x}
  • The feeder can hold <em>30 baseballs</em>, when full

The given parameters are:

<em />\mathbf{Initial = \frac 16x}<em> ------ 1/6 full</em>

<em />\mathbf{Additional = 15}<em> --- baseballs added</em>

<em />\mathbf{Final = \frac 23x}<em> ---- 2/3 full</em>

<em />

So, the equation that represents the problem is:

\mathbf{Initial + Additional = Final}

So, we have:

\mathbf{\frac 16x + 15 = \frac 23x}

The number of baseballs it can hold is calculated as follows:

\mathbf{\frac 16x + 15 = \frac 23x}

Multiply through by 6

\mathbf{x + 90 = 4x}

Collect like terms

\mathbf{4x - x = 90 }

\mathbf{3x = 90 }

Divide through by 3

\mathbf{x = 30 }

Hence, the feeder can hold 30 baseballs, when full

Read more about proportions and fractions at:

brainly.com/question/20337104

5 0
2 years ago
If 3 is added to a number and the sum is multiplied by 7,gives 91 as result. Find the number.​
WINSTONCH [101]

Answer:

10

Step-by-step explanation:

10+3 = 13

13 x 7 = 91

4 0
3 years ago
Read 2 more answers
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