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romanna [79]
2 years ago
9

Mateo’s aunt bought a share of stock many years ago.

Mathematics
2 answers:
Usimov [2.4K]2 years ago
8 0

Answer:

150

Step-by-step explanation:

150 plus 80% equals 270

777dan777 [17]2 years ago
6 0

Answer:

<h2>300</h2>

Step-by-step explanation:

180%=270

divide by 9

20%=30

x by 5

100% =300

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Ed is on a road trip. He has already traveled 211 miles and is driving at a rate of 63 miles per hour. Which equation could be u
Marina86 [1]

Answer:

Option C is correct.

Step-by-step explanation:

Distance already traveled by Ed =211 miles

Also, Ed is driving at a rate of 63 miles per hour.

Distance = Speed × Time

Distance traveled by Ed in x hours =63x

Total distance traveled by Ed =211+63x

Also, total distance traveled by Ed is 638 miles.

Therefore,

638=211+63x

Option C is correct.

6 0
3 years ago
If the discriminant of a quadratic equation is equal to -8, which statement describes the roots?
Dovator [93]

Keywords

quadratic equation, discriminant, complex roots, real roots

we know that

The formula to calculate the <u>roots</u> of the <u>quadratic equation</u> of the form  ax^{2} +bx+c=0 is equal to

x=\frac{-b(+/-)\sqrt{b^{2}-4ac}}{2a}

where

The <u>discriminant</u> of the <u>quadratic equation</u>  is equal to

b^{2}-4ac

if  (b^{2}-4ac)> 0 ----> the <u>quadratic equation</u> has two <u>real roots</u>

if  (b^{2}-4ac)=0 ----> the <u>quadratic equation</u> has one <u>real root</u>

if  (b^{2}-4ac)< 0 ----> the <u>quadratic equation</u> has two <u>complex roots</u>

in this problem we have that

the <u>discriminant</u> is equal to -8

so

the <u>quadratic equation</u> has two <u>complex roots</u>

therefore

the answer is the option A

There are two complex roots

5 0
3 years ago
Read 2 more answers
Which equation represents the hyperbola in general form?
valina [46]

ANSWER

D.

9 {y}^{2}  - 4 {x}^{2}- 36y + 16x - 16 = 0

EXPLANATION

The standard equation of the hyperbola is

\frac{ {(y - 2)}^{2} }{4}  -  \frac{ {(x - 2)}^{2} }{9}  = 1

We multiply through by 36 to obtain:

9 {(y - 2)}^{2}  - 4( {x - 2)}^{2}  = 36

We now expand to get,

9( {y}^{2}  - 4y + 4) - 4( {x}^{2}  - 4x + 4) = 36

Expand :

9 {y}^{2}  - 36y + 36  - 4 {x}^{2}  + 16x - 16 = 36

To get the general form, we equate everything to zero to get,

9 {y}^{2}  - 4 {x}^{2}- 36y + 16x - 16 = 0

The correct choice is D.

7 0
3 years ago
Oliver purchased 11.3 gallons of gasoline. There are approximately 3.8 liters
m_a_m_a [10]

Answer:b

Step-by-step explanation:

3 0
3 years ago
Suppose the contestants were asked to make two batches of their recipes instead of one batch. Would the value for the amount of
kirill [66]

Answer:

  yes

Step-by-step explanation:

If all contributors to the distribution are doubled, the value of any particular item in the distribution will be double what it was. That is, it will be different.

4 0
2 years ago
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