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AVprozaik [17]
3 years ago
7

Use the substitution method to solve. y=5−3x 5x−4y=−3

Mathematics
1 answer:
Vadim26 [7]3 years ago
6 0
Well just substitute y (the first equation) into the second equation.
So
5x-4(5-3x)=-3
Then just solve the equation from there.
5x-20+12x=-3
17x=17
x=1
and if you need y, y=2
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Let 3.27<<5.89 represent an interval on the number line. Find the value that is in the middle of the interval.
laila [671]

Answer:

The middle value of the interval is 4.58

Step-by-step explanation:

Consider the provided interval.

We need to find the value that is in the middle of the interval.

We can find the middle value of the interval by adding the upper and lower limit and divide the sum of the upper and lower limits by 2.

Here the upper limit is 3.27 and lower limit is 5.89.

\frac{3.27+5.89}{2}=\frac{9.16}{2}=4.58

Hence, the middle value of the interval is 4.58

4 0
3 years ago
The residents of a city voted on whether to raise property taxes. The ratio of yes votes to no votes was 4 to 7. If there were 5
Kipish [7]
4/7 = y/5019....with y being yes votes
cross multiply
(7)(y) = (4)(5019)
7y = 20076
y = 20076/7
y = 2868 <=== yes votes

total of yes and no votes : 5019 + 2868 = 7887
8 0
3 years ago
Let FS R be a finite set. (a) Prove that F is closed (b) Prove that every point in F is an isolated point.
Lorico [155]

Answer:

a) Suppose that F is ordered in ascending order: F = \{x_1,\ldots, x_n\}. Then, the complement of F can be written as

F^c = (-\infty,x_1)\cup (x_1,x_2)\cup (x_2,x_3)\cup \cdots \cup (x_{n-1}, x_{n})\cup (x_n,+\infty)

which is the union of a finite number of open intervals, then F^c is an open set. Thus, F is a closed subset of the real numbers.

b) Take an arbitrary element of F, let us say x_k. Now, choose a real number \epsilon such that

0 there are not other element of F, because \epsilon is less that the minimum distance between x_k and its neighbors.

In case that k=1 we only consider 0, and if k=n we only consider 0.

Then, all points of F are isolated.

Step-by-step explanation:

8 0
3 years ago
Which of the following shows two congruent triangles
vaieri [72.5K]

Answer:

all of them

Step-by-step explanation:

all of them seem to have the same marks

but if u get the question wrong my next bet would be to go with only C because it has the marks on the sides if that makes sense

6 0
3 years ago
two Brothers Marvin Lewis each invest $5000 into an account that earns 5% interest neither brothers deposit or withdraw anything
NNADVOKAT [17]

Answer: Marvin will earn $10,681.77 more in interest than Luis

Step-by-step explanation: A = P(I+r)t

5 0
2 years ago
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