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Rudiy27
2 years ago
11

Please answer all of them. I only have today...

Mathematics
1 answer:
san4es73 [151]2 years ago
4 0
1. Yes, x=9 is a solution because 8x= 72, and 72 can be greater then and equal to 58.

2. 1 + 0.24j


3. 2 units

4. 25 students per classroom

Hope this helps!
You might be interested in
Determine the nature of the roots:
malfutka [58]

Answer:

A.  2 distinct roots.

Step-by-step explanation:

2x^2 + 8x + 3 = 0

Finding the discriminant:

b^2 - 4ac = 8^2 - 4 * 2 * 3

=  64 - 24

= 40

The discriminant is positive but not a perfect square

So there are 2 distinct ,real, irrational roots.

5 0
2 years ago
Joni made a down payment of $1,600 on a car that was 20% of the total price what was the total price
zvonat [6]
We know that 20 percent is 1/5
1,600 = (1/5)*x\\ 1,600 * 5 = x 8,000 = x
total price is $8,000
4 0
3 years ago
I will give Branliest
Yuliya22 [10]
Neither because they are different size and mirrored it could’ve been congruent but it’s double the size and congruent is mirrored and the same size
3 0
2 years ago
The total number of cats and dogs at the shelteris 125. there are 5 more cats than dogs
juin [17]
If you're looking for the number of dogs (I'm assuming, you didn't specify), all you'd have to do is divide the number by two, then round down to find the number of dogs, then check your answer by adding that number and that number plus 5.

For example, yours would look like 125/6=62.5, and rounding down to 60.

Then check your answer by adding 60 and 65, the number of cats. 60+65=125.

There are 60 dogs inside the kennel.
5 0
3 years ago
6x^2-4xy-15xy+10y^2 factor by grouping
PtichkaEL [24]
4 answers · Mathematics
Best Answer
We will need to split the middle term and use the grouping method. To do this multiply the coefficient of the first term (6) against the coefficient of the last term (10):

6 * 10 = 60
Factors of 60 = +-(1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60)

From the list of factors find two numbers that when added together give -19 and when multiplied together give 60. -15 and -4 added together give -19 and multiplied together give 60 so split the middle term by rewriting these values back into the expression:

6x^2 - 15xy - 4xy + 10y^2

Now use the grouping method, take out the highest common factor between the two sets of terms:

3x(2x - 5y) - 2y(2x - 5y)

Group the outside terms:

(3x - 2y)(2x - 5y)


Answers
6 = -3*-2
10 = 5*2
5*3+2*2=19
thus
(2y-3x)(5y-2x)
8 0
3 years ago
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