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jeka94
3 years ago
13

??????? Help please

Mathematics
2 answers:
nordsb [41]3 years ago
7 0

Answers:

a) 5x=5(6)=30

b) 3y=3(-7)=-21

c) 10z=10(0.8)=8

Using the substitution method

Ad libitum [116K]3 years ago
4 0

Step-by-step explanation:

Put the values of x = 6, y = -7 and z = 0.8 to the expressions:

a) 5x → 5(6) = 30

b) 3y → 3(-7) = -21

c) 10z → 10(0.8) = 8

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Robert accepted a new job at a company with a contract guaranteeing annual raises. Let S represent Robert's salary after working
vesna_86 [32]

Answer:

74,000

Step-by-step explanation:

In the year where he got 104,000 the year before he got 6,000 less. The year before 98,000 he got 12,000 less which means that now it would just be 86,000-12,000=74,000

I think this is right but you can double check on a calculator

Hope this helped!

6 0
2 years ago
A function that models the profit for a new pet-monitoring system shows that there is no profit made until the price reaches $95
-Dominant- [34]

The profits at x = $185 is 0 and the graph is attached below:

<h3>What is graph?</h3>

Graph is a mathematical representation of a network and it describes the relationship between lines and points.

Function is to model the profits of a new pet-monitoring system, so, if the profits are y and x then y = f(x)

The curve shows that y is negative at values of x< $95, then the profits increase when x varies between $95 and $140.

The profits reach a maximum at $140 and then the profits start to reduce as x increases again.

So, the profits at x = $185 is 0.

Learn more about this concept here:

brainly.com/question/16887458

#SPJ1

6 0
2 years ago
Forty-two of the students in band own their instrument.
goldfiish [28.3K]

Answer:

112 students

Step-by-step explanation:

Let T be the total number of students in the band.

From the question,

We were told that 37.5% of the total owns their individual instruments and this amount to 42 students

The total number of students can calculated for as follows:

37.5% x T = 42

37.5/100 x T = 42

Cross multiply to express in linear form

37.5 x T = 100 x 42

Divide both side by 37.5

T = (100 x 42) /37.5

T = 112

Therefore, there are 112 students in the band

6 0
3 years ago
And can you please show your answer thx
MrMuchimi

Answer:

y=4x is the answer

Step-by-step explanation:

5 0
3 years ago
A rectangle has a width of 2.5 inches and a length of x inches. The value of the perimeter of the rectangle is equal to the valu
Advocard [28]

Answer:

Step-by-step explanation:

W=2.5, L=x

A=LW=2.5x

P=2(L+W)=2(2.5+x)=5+2x

P=A

5+2x=2.5x

5-0.5x=0

-0.5x=-5

x=10

7 0
3 years ago
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