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pychu [463]
4 years ago
14

What is the solution to the system of equations? y = 1.5x – 4 y = –x (–1.6, 1.6) (–1.5, 1.5) (1.5, –1.5) (1.6, –1.6)

Mathematics
2 answers:
USPshnik [31]4 years ago
8 0

Answer:

1.6,-1.6

Step-by-step explanation:

Ket [755]4 years ago
6 0

Answer:

x = 1.6 , y = -1.6 or your Answer (1.6, –1.6)

Step-by-step explanation:

Substitute y = 1.5 x - 4 into the second equation:

{y = 1.5 x - 4

1.5 x - 4 = -x

In the second equation, look to solve for x:

{y = 1.5 x - 4

{1.5 x - 4 = -x

1.5 x - 4 = (3 x)/2 - 4:

{(3 x)/2 - 4 = -x

Add x + 4 to both sides:

{y = 1.5 x - 4

{(5 x)/2 = 4

Multiply both sides by 2/5:

{y = 1.5 x - 4

{x = 8/5

Substitute x = 8/5 into the first equation:

{y = -1.6

{x = 8/5

Collect results in alphabetical order:

Answer:  {x = 8/5 , y = -1.6

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Can someone help me plz
Ivan
Wouldent the answer be A because all percents are out of 100 so the 1.9 would be 9 over 100
6 0
3 years ago
Elisa's mom teaches at preschool. There is 1 teacher for every 12 students at the preschool. There are 276 students at the presc
Pavlova-9 [17]

12 students/1 teacher  = 276 students/x teachers

Students are on top of the ratio and teachers are on the bottom of the ratio.  It must remain the same on both sides of the equation.

12 x = 276

divide by 12

x =23


8 0
3 years ago
In a nursery class of 18 pupils, the average is 4<img src="https://tex.z-dn.net/?f=%20%5Cfrac%7B1%7D%7B2%7D%20" id="TexFormula1"
Alisiya [41]

Answer:

The sum of ages of all 18 pupils in the class = 81

Step-by-step explanation:

Total number of pupil in the class =  18

Average of years in the class = 4\frac{1}{2}

Now, 4\frac{1}{2}  = 4 + \frac{1}{2}  = 4 + 0.5 = 4.5

⇒Average of sum of ages  in the class = 4.05

Let us assume the sum of ages of all students in the class = m

By the formula for AVERAGE:

\textrm{Average of n obseravtions}  = \frac{\textrm{Sum of n observations}}{\textrm{n}}

\implies 4.5 = \frac{m}{18}

or, m =  18 x 4.5 = 81

Hence, the sum of ages of all 18 pupils in the class = 81

6 0
3 years ago
Read 2 more answers
The fraction F below is an extended fraction. What simple fraction in lowest terms is equal to F?
Andrei [34K]

I was really scared when I first looked at this ... I thought it was gonna
keep going to infinity, and I don't know how to handle those.

But this fraction only has 2 or 3 levels to it, so I think we can do it without
too much trouble.

The secret is: You definitely have to start at the bottom and work
your way up.

-- See the bottom level ?  It's  2 + 1/3 . 
-- Change that number all to an improper fraction, and it's  7/3 .

The reason I want to do that is because it's the denominator of the
next fraction up, and that fraction is (1 over it). 

-- The denominator of the next fraction up is 7/3, so 1 over it is just 3/7.

-- Now, before we go up to the top level, it looks like we're supposed to
add the big black ' 1 ' to where we are now ... to the 3/7 .

' 1 ' = 7/7 .  Add that to the 3/7, and we have  10/7 .

All we have left now, out of the whole pile, is  (1 over 10/7).

And that's just <em>7/10</em>.


5 0
3 years ago
I don’t know how to do this can someone help?
Sav [38]

Answer:

i think its B cause 4 was the radius

Step-by-step explanation:

4 0
3 years ago
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